Zanzibar Weather in May: Is It Worth Visiting?

May is the tail end of Zanzibar’s long rains (Masika), with rainfall declining significantly through the month — from around 190mm at the start to much less by late May. Temperatures average 26–28°C (79–82°F), humidity remains high, and skies are frequently overcast. However, May is a month of genuine improvement week by week, and by late May the island begins transitioning toward the glorious cool dry season. Budget travelers and those with flexibility can find excellent value in May.

May is Zanzibar’s most misread month on a weather chart.

Look at the rainfall numbers — 190mm, 18–20 rainy days — and your instinct is probably to scroll past it. And compared to June through October or December through February, that instinct makes sense for a beach-focused traveler.

But here is what the monthly average doesn’t tell you: May is a month of dramatic, week-by-week improvement. Early May can still feel like April’s heavy rains. Mid-May turns a corner. And late May — the final week especially — can genuinely surprise you with warm, partly sunny days, calmer seas, and the first hints of the brilliant cool dry season that’s just around the corner.

May is not a month for a traveler who wants guaranteed beach weather every day. But it is one of the most misunderstood months in Zanzibar’s calendar — and for the right kind of traveler, it is extraordinary value, a quieter island, lush natural beauty, and experiences that are simply unavailable in the polished peak-season rush.

At Visit Zanzibar Island Tours, our local team operates year-round. We know how May actually behaves on the ground — not just what the averages say, but which weeks are workable, which activities shine in these conditions, and how to build a trip that delivers real rewards even in an imperfect weather month.

This guide gives you everything: honest weather data broken down by week, a complete activity guide for May, pricing and crowd realities, packing specifics, and the local insights that help you decide whether May is right for you — and if it is, how to make the most of every day.

What Is the Overall Weather in Zanzibar in May?

May sits at the waning end of the Masika — Zanzibar’s long rainy season — and the key to understanding it is recognising that it is not a static month. May changes, sometimes dramatically, between its first and last weeks.

Here is the overall data picture:

• Average daytime temperature: 26–29°C (79–84°F)
• Average nighttime temperature: 22–24°C (72–75°F)
• Average monthly rainfall: 170–200mm
• Rainy days: Approximately 17–20 across the month
• Humidity: High — 82–88%, gradually decreasing
• Sea temperature: 25–27°C (77–81°F) — cooling slightly from April’s peak
• Sunshine hours: 4–6 hours per day on average, increasing through the month
• UV index: Moderate to high, stronger on clearing days in late May

The week-by-week breakdown:

Week	Conditions	Outdoor Activities
Week 1 (May 1–7)	Still heavy rain, overcast, feels like April	Limited — cultural focus recommended
Week 2 (May 8–14)	Rain reducing, more sunny intervals	Selective morning activities viable
Week 3 (May 15–21)	Noticeably improving, some fine days	Most activities running well
Week 4 (May 22–31)	Late May — conditions approaching dry season	Good-to-excellent on many days

This progressive improvement is the defining characteristic of May. A traveler visiting May 1–7 has a very different experience from someone arriving on May 22. If your dates are flexible within May, book as late in the month as possible. Late May is when the true value of visiting this month reveals itself.

Is May a Good Time to Visit Zanzibar?

The honest answer, as with April, requires nuance — but May’s answer leans more positive.

May is a good time to visit Zanzibar if:

• You are travelling on a tight budget and want to maximise value. May’s prices are among the lowest of the year, and the experience quality — especially in the second half of the month — is significantly better than the price suggests.
• You can travel in late May (specifically the last 10 days). Late May can deliver conditions that rival early June — which is already considered a very good time to visit.
• You prioritise culture and nature over guaranteed beach sunshine. Stone Town, spice farms, and Jozani Forest are all outstanding in May and offer rich, crowd-free experiences.
• You are a repeat visitor who has seen Zanzibar in peak season and wants to experience its quieter, more authentic side.
• You want maximum accommodation value. Some of Zanzibar’s finest resorts are available at their lowest rates in May — properties that cost $200+ per night in July can be found for under $100.
• You are combining Zanzibar with a mainland Tanzania safari, where May’s green season game-viewing can be genuinely rewarding and flights/lodges are significantly cheaper.

May is probably not right for you if:

• You have only 4–5 days and a beach holiday is the primary goal — the risk of a fully rainy week is still present in early-to-mid May.
• You need guaranteed water sports availability — Safari Blue, Mnemba snorkeling, and offshore excursions are still intermittent in May and cannot be relied upon.
• You are traveling with young children who will struggle with rainy day adaptability.
• Your idea of a holiday is lying on white sand under blue sky every single day — May cannot consistently promise that until its final week.

The bottom line: May is Zanzibar’s best-kept secret for the flexible, budget-conscious, experience-hungry traveler. It is not the right month for everyone, but for those who fit the profile, it punches well above its weather-chart weight.

How Hot Is Zanzibar in May? Understanding the Temperatures

May brings a genuine cooling compared to the hot dry season peak of February. Temperatures average 26–29°C (79–84°F) during the day — warm and tropical, but no longer the intense, punishing heat of January and February. The combination of reduced sunshine hours and higher humidity means the heat feels different rather than necessarily hotter or cooler.

What the temperatures feel like in practice:

The daytime heat in May is the most comfortable of any month for physically active travelers. You can walk Stone Town’s alleys, trek through Jozani Forest, or explore a spice farm in May without the heat exhaustion risk that a February morning carries. The cooler, overcast sky of early May is actually pleasant for cultural exploration on foot.

On the days when the sun does emerge — particularly in late May — the heat intensifies quickly, so sun protection remains essential. But these are not the skin-scorching temperatures of peak dry season.

Nights in May are warm and sometimes still muggy, averaging 22–24°C (72–75°F). Sea breezes on the coast remain the most effective natural cooling, and coastal accommodation is noticeably more comfortable than inland locations.

The transition underway: As May progresses, the Kusi (southeast monsoon) strengthens, and this is the same wind that makes June–October so pleasant — breezy, lower humidity, comfortable for outdoor activity. In late May, you begin to genuinely feel it. The air starts to have a freshness that is entirely absent in humid April, and it makes late May walking, cycling, and exploring dramatically more enjoyable.

Temperature comparison across the transition months:

Month	Avg. High	Avg. Low	Rainfall	Sunshine Hours
March	31°C / 88°F	24°C / 75°F	145mm	5–7
April	29°C / 84°F	23°C / 73°F	330mm	3–5
May	28°C / 82°F	22°C / 72°F	185mm	4–6
June	26°C / 79°F	21°C / 70°F	50mm	7–8
July	25°C / 77°F	20°C / 68°F	35mm	8–9

The trend is clear. May is the cooling, drying bridge between the heavy rains of April and the brilliant conditions of June and beyond.

How Much Rain Falls in Zanzibar in May? The Real Picture

May averages approximately 170–200mm of rainfall across the month — roughly half of April’s 330mm. That headline figure alone makes May a meaningfully better proposition than April, but the distribution of that rainfall within the month matters just as much as the total.

The May rain pattern:

• Early May (weeks 1–2): Rain continues frequently, sometimes heavily. This period can feel like a continuation of April with approximately 6–10 rainy days in the first two weeks alone.
• Mid-May (weeks 2–3): A genuine transition begins. Showers become shorter, more predictable in their afternoon timing, and sunny intervals between rain periods grow longer.
• Late May (weeks 3–4): The Masika winds down. Rainy days reduce to 2–4 per week, morning sunshine becomes reliable, and some days pass with only a brief late-afternoon shower or no rain at all. Late May can genuinely surprise you.

How May rain differs from April rain:

By May, the character of rainfall shifts. April’s rain is often sustained, heavy, and all-day in its worst periods. May’s rain — especially from mid-month onward — tends to be more conventionally tropical: clear mornings, building clouds through the afternoon, a shower from 3–5pm, and then clearing again by early evening. This is the pattern that makes morning activities entirely viable and manageable.

The practical implication: If you are doing a morning spice farm tour, a morning forest walk, or a morning Stone Town exploration in mid-to-late May, rain is unlikely to be a disruption. Afternoon activities are more variable, but evening dinners, sunset cruises, and dusk walks through Stone Town are frequently beautiful in late May.

What Are the Sea Conditions in Zanzibar in May?

The sea in May is in transition — just like everything else about the month. The southwest Kusi monsoon is building through May, and this has complex effects on different coasts of the island.

• Sea temperature: 25–27°C (77–81°F) — slightly cooler than April, still very comfortable for swimming
• Underwater visibility: Improving through the month — 8–15m in early May, up to 20m in late May at best sites
• Wave height: Elevated on west and southwest coasts early in the month, gradually calming
• Currents: The Kusi creates stronger currents on exposed coasts — experienced divers find this interesting; beginners should respect it

The north coast advantage in May:

The north coast of Zanzibar — specifically the beaches at Nungwi and Kendwa — is sheltered from the building Kusi southwest monsoon by the island’s mass itself. This makes the north coast the most reliable area for calm swimming conditions in May, and on many days in mid-to-late May, the water at Nungwi is genuinely swimmable and pleasant.

The east coast in May:

The east coast (Paje, Jambiani) faces directly into the Kusi, making sea conditions rough and swimming inadvisable for most of May. The famous shallow turquoise lagoons can become choppy and brown with churned sediment. However, the Kusi brings with it the reliable wind that makes this coast a kitesurfing destination — and for kite surfers specifically, late May is when conditions start to become excellent.

Boat trips and offshore excursions:

Water-based boat tours begin recovering in May. By mid-to-late May, dolphin tours, Prison Island crossings, and calm-water snorkeling are increasingly viable on a day-by-day assessment basis. Safari Blue and Mnemba snorkeling remain weather-dependent, but they begin to operate more regularly as the month progresses — particularly in the final two weeks.

Our team at Visit Zanzibar Island Tours assesses sea conditions every morning and provides honest guidance on which activities are safe and rewarding on any given day.

What Activities Work Best in Zanzibar in May?

May’s activity picture is genuinely more positive than April, and it improves week by week. Here is the complete, honest guide.

Reliably Excellent Throughout May

Stone Town — The Ultimate May Activity

Stone Town is magnificent in May, and we say that without any qualification. The UNESCO World Heritage city’s covered alleyways, centuries-old buildings, indoor cultural sites, rooftop restaurants, and vibrant local markets are completely rain-proof and fully operational throughout the entire month.

Without the peak-season crowds, May’s Stone Town has a quality that money cannot buy in July or February. You’ll have the Palace Museum, the House of Wonders, and the Old Fort largely to yourself. The famous carved door alleyways are empty enough to photograph properly. Local shopkeepers and craftspeople have time for real conversations. The food stalls at Forodhani Gardens operate when the weather allows, and the evening atmosphere — warm, fragrant, and unhurried — is deeply memorable.

For any May visitor, Stone Town should be the backbone of the itinerary. Plan at least two nights here.

→ Book the Stone Town Tour Zanzibar

Spice Farm Tour — Outstanding in May

If February’s spice farms are lush, May’s are extraordinary. After two months of the heaviest rainfall of the year, every plant on Zanzibar’s famed spice plantations is growing at maximum vitality. The cloves, vanilla vines, black pepper, cardamom, cinnamon, lemongrass, turmeric, and jackfruit are all at peak aromatic intensity.

A May morning spice farm tour is one of the most sensory experiences the island offers year-round. The rain-freshened air, the deep green canopy, the intensely fragrant plants — it’s an experience that dry-season visitors literally never get to have. We time spice tours to morning windows and have never had a May spice farm tour fail to delight guests.

→ Book the Spice Farm Tour Zanzibar

Jozani Forest — Exceptional for Wildlife and Nature

May’s Jozani-Chwaka Bay National Park is, simply, one of the most beautiful natural environments on Zanzibar at this time of year. The forest is at maximum lushness — a cathedral of deep green with shafts of soft light filtering through the canopy on clearing mornings.

The endemic Zanzibar red colobus monkeys are highly active in May, feeding on abundant forest fruit and vegetation. Birdwatching is at its richest — migratory species are still passing through, and the diversity of birds in the forest and adjacent mangroves in May is remarkable. Forest trails are muddy in places but entirely walkable with appropriate footwear.

For nature-focused travelers, May’s Jozani Forest is genuinely more spectacular than its dry-season version. The dry season forest is beautiful; May’s forest is alive.

→ Explore the Jozani Forest Tour

Village Culture Tour — Authentic and Unhurried

May’s low tourist numbers make village tours an extraordinarily personal experience. Local communities are living their real lives — not performing for tour groups — and the interactions between guests and residents in May have an authenticity that peak season rarely matches. Fishing villages are fully operational, local markets are genuinely local, and the welcome is warm.

→ Discover the Village Culture Tour Zanzibar

Spice Farm & Jozani Forest Combo — The Perfect May Day

This combination is, in our view, the single best May day on the island. A morning spice farm tour (8–11am) followed by the Jozani Forest tour (11am–1:30pm) gives you two of Zanzibar’s most nature-rich, rain-independent experiences in a single morning window before afternoon weather develops. It is consistently one of our highest-rated tours year-round, and May’s lushness makes it even better.

→ Book the Spice Farm & Jozani Forest Tour

Works Well From Mid-May Onward

Prison Island Tour

By mid-May, the short boat crossing from Stone Town to Prison Island (Changuu) is consistently viable on most mornings. The giant Aldabra tortoises are, as ever, unconcerned by the season. The surrounding marine reserve begins to clear up, and snorkeling around the reef improves noticeably from April. May mornings at Prison Island — quiet, green, and unhurried — have a tranquility that peak-season visits rarely deliver.

→ See the Prison Island Tour Zanzibar

Dolphin Tour at Kizimkazi

From mid-May, dolphin tours at Kizimkazi in the south begin operating more reliably, with morning sea conditions increasingly calm enough for comfortable boat trips. Spinner and bottlenose dolphins are resident year-round in these waters. The reduced boat traffic in May means dolphin encounters can feel wonderfully uninterrupted — just your boat, the dolphins, and the clearing sky.

→ Book the Dolphin Tour Zanzibar

Sunset Dhow Cruise

May’s evenings — particularly following an afternoon of rain that has cleared — produce some of the most spectacular sunset skies of the year. The dramatic cloud formations, washed clean by rain and lit by the falling sun, create a colour palette that the uniformly clear dry-season sky simply doesn’t produce. A sunset dhow cruise on a clearing May evening is genuinely one of Zanzibar’s most beautiful experiences.

→ Book the Sunset Dhow Cruise Zanzibar

Swimming with Turtles

Mid-to-late May sees turtles actively present in the sheltered waters along the north coast. Sea conditions in protected lagoons near Nungwi improve through the month, and snorkeling for turtles becomes increasingly enjoyable and viable.

→ See Swimming with Turtles in Zanzibar

Transparent Kayak Tour

From mid-May, calm morning conditions in protected lagoon areas make the transparent kayak tour increasingly enjoyable. The rain-enriched waters bring excellent marine life activity to shallow reef areas, and a clear-bottomed kayak paddle over a living May reef is uniquely beautiful.

→ Book the Transparent Kayak Zanzibar Tour

Excellent in Late May (Final 10 Days)

Mnemba Atoll Snorkeling

By late May — approximately from the 22nd onward in a typical year — conditions at Mnemba Atoll begin to recover meaningfully. Visibility improves toward 15–20 metres, surface conditions on the north coast calm down, and the atoll’s extraordinary marine life (turtles, reef sharks, eagle rays, lionfish, dense reef fish populations) becomes properly accessible again.

A late May Mnemba snorkeling trip can be genuinely excellent — better than mid-season conditions in some years. If you’re booking a May trip specifically hoping to snorkel Mnemba, aim for dates after May 20th.

→ Book your Mnemba Snorkeling Tour

Safari Blue Tour

The Safari Blue tour — the full-day traditional dhow sailing experience through Menai Bay — begins recovering in late May. We assess conditions each morning, and from approximately the third week of May onward, we operate Safari Blue on an increasing proportion of days. By the final week of May in a normal weather year, Safari Blue runs reliably on most days.

If Safari Blue is important to your trip, book for the last five days of May and you have a strong chance of going. Book for May 1st and the chance is significantly lower.

→ Explore the Safari Blue Zanzibar Tour

Kitesurfing on the East Coast

Late May marks the beginning of the kitesurfing season on Zanzibar’s east coast. The Kusi southwest monsoon brings the consistent wind that kite surfers — both experienced riders and beginners taking lessons — travel specifically to Paje and Jambiani to find. If kitesurfing is your reason for visiting, late May is when the season genuinely begins, at much lower prices than the July–August peak kite season.

→ See Kite Surfing in Zanzibar

North Coast Beaches — Nungwi & Kendwa

The beaches at Nungwi and Kendwa, protected from the Kusi by the island’s northern geography, become increasingly beautiful and swimmable through May. By late May, the reef-sheltered lagoon at Nungwi can be genuinely magnificent — calm, clear, and warm. This is when May transitions from a shoulder month into the early dry season, and the first clear blue-sky late-May beach days can feel like the beginning of something wonderful.

Combination Tours That Work Beautifully in May

May’s weather pattern — active mornings, variable afternoons — makes combination morning tours particularly effective. Our full range of combo experiences includes:

• Spice Farm & Stone Town Tour — lush farm in the morning, culture and cuisine in the afternoon
• Village Tour & Stone Town Tour — authentic community life followed by historic city exploration
• Jozani Forest & Cave Swimming Tour — exceptional in May, with the forest at its greenest and cave waters cool and refreshing
• Spice Farm, Prison Island & Stone Town Tour — a full cultural day that works regardless of afternoon conditions
• Spice Farm, Jozani Forest & The Rock Restaurant — the perfect May full day: outdoor nature in the morning, iconic covered dining in the afternoon

→ See all Zanzibar Tours

The Mikumi Safari Day Trip — A May Highlight

May is one of the best months of the year to combine your Zanzibar visit with a day on the Tanzania mainland, and our Mikumi Day Trip Safari from Zanzibar is the ideal way to do it.

Mikumi National Park’s green season in May produces lush, dramatic landscapes that the dry-season dusty plains don’t offer. Animals are present in large numbers near water sources, many have calves born in the wet season, and the park feels alive with activity. Elephant herds are a near-certainty. Lions, giraffes, zebras, wildebeest, and buffalo are regularly spotted. The green backdrop makes for extraordinary photography.

On a rainy Zanzibar day — when sea conditions make water activities impractical — a Mikumi safari day is the perfect switch. You’re off the island, in an entirely different environment, and the wildlife experience is outstanding.

→ Book the Mikumi Day Trip Safari From Zanzibar

How Busy Is Zanzibar in May? Crowds and Prices

Crowds

May is one of Zanzibar’s quietest months, running only marginally more active than April in the first two weeks before gradually picking up toward the end of the month as early June travellers begin arriving.

In practical terms: popular sites and tours have minimal queues. Beaches on the better days feel genuinely private. Restaurants have tables available without reservation. Your tour guide’s attention is entirely yours rather than split across large groups. For solo travelers, couples, and small groups who value intimacy and authenticity over buzzing resort vibes, May is exceptional in this regard.

By late May, the first wave of early dry-season visitors begins to trickle in, and this very slightly increases the energy at beach resorts and in Stone Town — but it is still dramatically quieter than the June–August peak.

Prices

May offers some of the best value of the entire year in Zanzibar:

• Hotels: 35–50% below peak-season rates in early May, improving to 25–35% below in late May as the season begins to shift. Some exceptional properties become genuinely affordable in May.
• Holiday packages: Our multi-day packages are available at their most accessible prices in May. A 7-night package in May can cost significantly less than a 5-night equivalent in August.
• Flights: May fare structures are low — particularly on connecting routes through Nairobi and Dar es Salaam. This is when budget-conscious travelers can access Zanzibar at genuinely competitive total trip costs.
• Negotiation: May’s low season environment makes operators more willing to customise packages, include extras, and work flexibly with travellers on budget.

Our holiday packages for May:

• Zanzibar 3 Days / 2 Nights Package from $295
• Zanzibar 4 Days / 3 Nights Package from $475
• Zanzibar 5 Days / 4 Nights Package from $660
• Zanzibar 6 Days / 5 Nights Package from $725
• Zanzibar 7 Days / 6 Nights Package from $955
• Zanzibar 8 Days / 7 Nights Package from $985

→ See all Zanzibar Holiday Packages

Important note on closures: As with April, some smaller properties and boutique operators close for annual maintenance in May. Before booking, confirm that your preferred accommodation is open and operational. Larger resorts and established operators like our team at Visit Zanzibar Island Tours remain fully operational through May.

If you need help identifying which properties are open and offer the best value in May, contact our team — we have current on-the-ground knowledge that no booking platform can match.

How Does May Compare to Other Months in Zanzibar?

Month	Season	Weather	Crowds	Prices	Who Should Go
Feb	Hot dry	Best of year	Very High	Peak	Beach, snorkeling, romance
Mar	Transition	Good → Mixed	Low–Med	Shoulder	Culture, nature, budget
Apr	Long rains peak	Poor → variable	Very Low	Lowest	Brave budgeters, culture lovers
May	Long rains end	Improving steadily	Very Low	Very Low	Budget travelers, late May = great value
Jun	Cool dry begins	Good–Excellent	Med	Mid	All-rounder, families
Jul	Cool dry peak	Excellent	Very High	High	Divers, beach lovers
Aug	Cool dry peak	Excellent	Very High	High	Everything
Sep	Cool dry	Excellent	High	High	Diving, wildlife
Oct	Late dry	Very Good	High	High	Whale sharks, diving
Nov	Short rains	Mixed	Low	Shoulder	Shoulder deals
Dec	Hot dry	Good	Very High	Peak	Beach, festive

May vs April: May is meaningfully better than April in almost every dimension that matters for a traveler. Significantly less rain, more sunny intervals, improving sea conditions, improving tour availability, and — crucially — a clear week-by-week positive trend. If your choice is between April and May, choose May. The experience quality is higher and the trajectory is hopeful rather than soggy.

May vs June: June is better weather — there is no question about that. June is the beginning of the dry season, with reliable sunshine and excellent conditions across the board. But June is also more expensive, slightly more crowded, and the transition from May to June is less dramatic than you might imagine. Late May can genuinely feel like early June in a good year. The price gap between May and June makes May attractive for value-focused travelers who don’t mind a 15–20% weather risk.

Late May specifically: This is our genuine recommendation within the month. If you’re debating May vs June and budget matters, late May (22nd onward) is our honest recommendation as the sweet spot — lower prices than June, but conditions increasingly resembling it.

Where to Stay in Zanzibar in May

For a May trip, accommodation location matters more than in the dry season because the island’s different coasts behave very differently in the Kusi wind and Masika rain conditions.

North Coast — Best for May

Nungwi and Kendwa are the strongest choices for a May base. The north coast’s geographic shelter from the southwest monsoon means these beaches retain the most swimmable conditions throughout May. On the better days, the reef-protected lagoon at Nungwi is genuinely beautiful — calm, clear, and warm. These beaches also benefit from being close to the northern boat departure points for tours like Mnemba snorkeling (best in late May) and dolphin tours.

Stone Town — Excellent for Culture Focus

If your primary interests are culture, food, history, and Stone Town’s extraordinary atmosphere, basing yourself here for part or all of a May trip is excellent. The city is fully alive year-round, and May’s quiet season means the best guesthouses and boutique hotels within the medina are available at attractive prices.

East Coast — For Late May Kitesurfers Only

Paje and Jambiani on the east coast are not recommended for a beach holiday in early-to-mid May — the Kusi makes swimming rough and the beach experience is limited. However, for kitesurfers arriving in late May to catch the start of the wind season, the east coast is exactly the right place to be.

Our advice: For a 7-day May trip, we’d suggest 2 nights in Stone Town and 5 nights on the north coast at Nungwi or Kendwa. This gives you the cultural depth of Stone Town combined with the best available beach conditions, and positions you well for all the north-coast tours that begin recovering through May.

Our private transfer service handles comfortable, reliable island transfers between any combination of locations, and our car rental service is ideal for flexible independent exploration.

A Sample 7-Day May Zanzibar Itinerary

This is how we’d structure a smart May trip — built around morning weather windows, flexible afternoons, and a mix of the island’s best May experiences.

Day 1: Arrive at Zanzibar Airport, private transfer to Stone Town. Evening walk through Forodhani Gardens.

Day 2: Morning Stone Town tour — alleys, markets, House of Wonders, Palace Museum. Afternoon: Old Fort cultural centre if raining, seafront café if clearing.

Day 3: Morning Spice Farm & Jozani Forest combo. Transfer to north coast accommodation. Evening: Kendwa beach sunset.

Day 4: Morning Prison Island tour + swimming with turtles if conditions allow. Afternoon: beach relaxation at Nungwi.

Day 5: Morning Dolphin Tour at Kizimkazi (conditions assessed; village tour alternative if needed). Evening: Sunset Dhow Cruise.

Day 6: Morning Mnemba Snorkeling (late May — conditions should be good) or Safari Blue attempt. If weather intervenes: Mikumi Day Trip Safari.

Day 7: Morning beach time at Nungwi. Afternoon transfer to airport with private car. Departure.

This itinerary has built-in flexibility — every outdoor activity is scheduled for the morning window, with cultural and covered alternatives ready for rainy afternoons. It also positions the most weather-dependent activities (Mnemba, Safari Blue) on day 6 when late May conditions are most likely to cooperate.

Want us to build a personalised version of this for your specific dates? Talk to our local team.

What Should You Pack for Zanzibar in May?

May packing needs to serve both the rainy early period and the increasingly dry late period. Pack smarter rather than heavier.

Rain Protection — Essential for Early May, Useful Throughout

• Quality packable waterproof jacket — one that handles sustained rain, not just a light shower layer
• Compact travel umbrella — very useful in town settings
• A large dry bag (10–20 litre capacity) — essential for boat trips and beach days where sea spray or sudden rain threatens electronics
• Waterproof sandals or trail shoes with grip — critical for wet forest trails and cobbled Stone Town streets in rain
• Quick-dry fabrics across all clothing — anything slow-drying will stay damp for hours in May humidity

Sun & Heat Protection — Increasingly Important in Late May

• Reef-safe sunscreen SPF 50+ — UV increases significantly as May clears up; late May sunburn is easy to underestimate
• Wide-brimmed hat and quality UV sunglasses
• UV-protective rash guard for water activities

Clothing

• Lightweight breathable fabrics — linen, cotton, moisture-wicking materials
• Swimwear (3 sets — you’ll use them, especially late May)
• Modest cover-ups for Stone Town (linen trousers, loose long tops for cultural sites)
• Light evening layer — the Kusi wind in late May can make evenings feel fresh on the coast
• Closed-toe waterproof shoes for Jozani Forest trails

Health Essentials

• Malaria prophylaxis — mosquito risk in May remains elevated from the wet season; begin as directed by your travel doctor before departure
• DEET-based insect repellent — evenings and overcast daytime periods require protection
• Anti-fungal cream — humidity in early May can cause minor skin issues
• Electrolyte sachets and rehydration salts — the heat-humidity combination still causes dehydration
• Oral rehydration salts and a small first aid kit
• Bottled water or purification option — tap water is not safe to drink

Practical Items

• Power bank — May storm activity can occasionally cause brief power outages
• Universal Type G adapter (UK-style)
• Local SIM card — available at the airport; useful for weather app monitoring and staying connected

For the full kit, see our What to Pack for Zanzibar guide.

Practical Tips From Our Local Team for a May Visit

These are the insights we share with every guest planning a May trip:

1. If you have any flexibility within May, book late in the month. Late May (from around the 20th) is consistently the best period. Conditions improve markedly, and the value is extraordinary — you get near-June quality at May pricing.

2. Use a local operator who builds flexibility into your days. A fixed-schedule booking from an international platform is a disadvantage in May. Our team assesses conditions daily, knows which activities are viable each morning, and can pivot your day plan to maximise what you get regardless of weather.

3. Watch the morning sky — it’s your daily forecast. Even the best weather apps struggle with Zanzibar’s hyper-local May conditions. If the sky is clear or partly cloudy by 7:30am, it’s almost always safe to go for morning outdoor activities. If it’s overcast and grey at dawn, adapt to a cultural plan.

4. Don’t neglect the food scene. May’s quiet season means Stone Town’s best restaurants are unhurried and at their most attentive. Zanzibar’s extraordinary food culture — the seafood, the spice-rich Swahili cuisine, the Indian Ocean fish curries, the Forodhani Gardens night market on clear evenings — doesn’t care what month it is. Some of the most memorable meals our guests have reported came from slow, rainy May evenings in Stone Town restaurants.

5. The Jozani Forest in May is genuinely special. We say this every month guide, but May takes it to another level. If you have any interest in wildlife, birds, or tropical forest ecosystems, the combination of the red colobus monkeys, endemic bird species, forest butterflies, and dramatically lush vegetation in May is something that cannot be replicated in any dry-season visit. Take the time for it.

6. Respect elevated malaria risk. May is a month when standing water from the Masika rains is at its maximum across the island, creating peak mosquito breeding conditions. Use prophylaxis, apply repellent diligently every evening without exception, and use bed nets where provided. This is non-negotiable health advice.

7. North coast is your base. For any beach component of the trip, Nungwi and Kendwa on the north coast give you the best available swimming and beach conditions in May. Position yourself there for beach days and most water activities.

8. Be ready for magic. Some of our most enthusiastic guests have visited in May. The island at this time of year has a quality — quiet, green, real, generous with good weather surprises — that peak-season visitors never encounter. Approach it with the right mindset, and May Zanzibar will reward you with experiences you cannot buy in July.

Conclusion

Zanzibar weather in May tells two very different stories depending on when you look. Look at the monthly rainfall figure and you see a challenging shoulder season. Look at late May on a clearing morning — the Kusi breezes freshening the air, Nungwi’s turquoise lagoon glittering under breaking clouds, the spice farms fragrant and dripping with rain-washed vitality — and you see something genuinely special.

The secret to May is simple: go late, stay flexible, work with local experts, and let the island show you a version of itself that most tourists never see.

May offers the lowest prices of the year, the quietest beaches, the lushest natural environments, and a Stone Town that belongs to you in a way that July visitors never experience. For the right traveler — and you probably know by now whether that’s you — it is Zanzibar at its most honest, most generous, and most surprisingly rewarding.

At Visit Zanzibar Island Tours, our local team is on the ground every May, running tours, reading conditions, and helping guests extract the most from every day. We know when to go to the ocean and when to go to the forest. We know which mornings are gifts and which afternoons will bring rain. And we love this island deeply enough to want your May trip to be wonderful, regardless of what the weather chart says.

Tell us your May dates and let us plan something worth traveling for.

→ Plan your May Zanzibar trip with our local experts

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Explore More From Visit Zanzibar Island:

• Zanzibar Weather in January
• Zanzibar Weather in February
• Zanzibar Weather in March
• Zanzibar Weather in April
• Best Time to Visit Zanzibar — All 12 Months
• Is Zanzibar Worth Visiting?
• Zanzibar Itinerary Guide (3–14 Days)
• What to Know Before Visiting Zanzibar
• All Zanzibar Tours
• Zanzibar Holiday Packages
• What to Pack for Zanzibar
• Private Transfers in Zanzibar
• Zanzibar Car Rental