Best Time to Visit Zanzibar: Month-by-Month Guide
Best time to visit Zanzibar: kusi and kaskazi seasons, rains, sea temperatures and crowds month by month for beaches, diving and kitesurfing.
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In this guide
The best time to visit Zanzibar is June to October for dry, cooler beach weather, or December to February for hot days and glassy seas (month-by-month data). The island sits just south of the equator, so temperatures barely move: the seasons turn on wind and rain, not heat. This guide breaks down the kusi and kaskazi monsoons, the two rainy spells, sea conditions and crowds month by month so you can match dates to diving, kitesurfing or plain beach time.
Key Takeaways
- June to October: dry kusi season, 27 to 29C, steady wind, peak crowds in July and August.
- December to February: hot kaskazi season, 31 to 33C, calm seas, best diving visibility.
- Mid-March to May: long rains, April wettest; some hotels close, prices drop hardest.
- November: short afternoon showers, green island, soft prices, underrated month.
- Swimmers pick the north in windy months. Kitesurfers pick the east from June to September.
What is the short answer for when to go?
Pick June to October for the safest first trip. The south-east kusi trade wind brings dry air, daytime highs near 28 to 29C, low humidity and reliable sun, with sea near 25 to 27C. Nights can feel fresh by island standards. July and August pack the beaches and the prices; June and September to October give nearly the same weather with thinner crowds and softer rates.
Pick December to February for the warmest, calmest sea. The north-east kaskazi monsoon brings highs of 31 to 33C, higher humidity, light wind and water near 29 to 30C. Mornings go glassy, diving visibility peaks, and the east coast tides matter more than the wind. February is the hottest month and also brings the Sauti za Busara music festival to Stone Town’s Old Fort.
Avoid mid-March to May unless the discount decides for you. The long masika rains peak in April with heavy downpours, grey stretches and rough seas, and a run of smaller hotels and dive centres closes for maintenance (seasonal guide). November’s short vuli rains are a different animal: brief afternoon showers inside sunny days, green landscapes and genuinely good value.
How does Zanzibar change month by month?
| Month | Weather | Sea and wind | Crowds and prices |
|---|---|---|---|
| Jan | Hot, 32C days, short dry season | 30C sea, kaskazi breeze, seaweed on east beaches | Busy, post-festive rates easing |
| Feb | Hottest, 32 to 35C, dry | Calmest water, best diving, Sauti za Busara festival | Busy in Stone Town, high season prices |
| Mar | Hot turning wet mid-month | Glassy mornings early, storms later; lodges start closing | Shoulder, discounts appear |
| Apr | Wettest, 30C, 18 rain days | Heavy showers, rough seas, some operators closed | Quietest, deepest discounts |
| May | Rains easing late month | Kusi wind builds, north coasts calm first | Quiet, low prices, improving days |
| Jun | Dry season starts, 29C | 27C sea, kusi wind strong on east, kite season opens | Rising bookings, pre-peak prices |
| Jul | Dry and warm, 28C | 25 to 26C sea, steady kusi wind, Paje prime for kitesurfing | Peak crowds and prices |
| Aug | Coolest air, driest | Coolest sea near 25C, still swimmable; north calmest | Peak, book months ahead |
| Sep | Sunny, 30C, driest | Seas calming, dive sites reopen, kitesurfing continues | High but thinning, good value |
| Oct | Warm, calm, 30C | 25m plus visibility, 27C sea, dolphin season off Kizimkazi | Busy resorts, quiet boutique corners |
| Nov | Short rains, 30C | 29C sea, glassy light winds between showers | Quiet, soft prices, underrated |
| Dec | Hot, festive, 31C | Warming seas, early showers fading | Peak fortnight from 20 Dec, dearest rates |
Daytime highs move only a few degrees across the year, from about 28C in July to 32C and above in February (climate records). Nights sit near 21 to 25C. Rainfall draws the real line: April alone can bring near 230mm against about 35mm in September. Humidity follows the heat, highest in the kaskazi months, lowest under the kusi wind.
Low tide exposing the flats at Paje. East coast swimming follows the tide table in every season.
Find experiences for your Zanzibar trip
If you book through these links, we may earn a commission at no extra cost to you.Kitesurfing, diving or beach calm: which season suits you?
Match the coast to the wind and half the arguments about “best month” disappear. The east coast from Paje to Jambiani faces the kusi wind head-on from June to September, with speeds near 35km/h on strong afternoons. That is why the island became an East African kite centre, and why swimmers there check the tide and wind before unpacking. A shorter kite window returns in January on the kaskazi. Months between the wind seasons are hit or miss for riders.
Divers and snorkellers want the opposite: December to February, with October close behind. Calm water, warm seas and visibility past 25 metres open the deeper sites off Mnemba and the southern reefs, while whale shark season brushes Mafia waters early in the year. The kusi months keep northern sites around Nungwi diveable, but expect chop and shorter range on breezy days.
Pure beach travellers should think in two moves, for example, as our ten days in Zanzibar itinerary shows. For calm swimming in windy months, base in Nungwi or Kendwa in the sheltered north-west, where sunsets drop over flat water and boats barely rock. For space and price in calm months, the east coast gives whiter sand, lower rates and long walks at low tide, with a pool or tidal pool covering the hours the sea walks out. Sightseeing in Stone Town, spice tours and Jozani Forest feel easiest from June to September, when heat and humidity sit lowest for walking.
Evening boats off the Stone Town waterfront. Calm dry-season nights suit the seafront after sightseeing.
When is Zanzibar cheapest, and which festivals matter?
Money follows the same calendar as weather, and our Zanzibar trip cost guide puts numbers on each season. January after the festive fortnight, March, June, September to October and November all undercut July, August and Christmas. November is the sweet spot for bargain hunters who still want sun: brief showers, green palms, quiet beaches and discounts of 20 to 30 percent. April and May go further at 30 to 40 percent off, but buy the discount with real weather risk and closed kitchens.
Festivals can fix dates better than any weather table. Sauti za Busara fills Stone Town each February with African jazz, pop and taarab at the Old Fort (festival listing); book Stone Town beds early that week. The Zanzibar International Film Festival takes over the Old Fort district across late June into July with music, film and dance. Mwaka Kogwa, the Shirazi new year with mock fights and singing, runs in Makunduchi village in late July. Ramadan shifts about ten days earlier each year and quiets daytime kitchens outside hotels for the month; evenings turn festive after iftar, and modest dress plus no public eating by day shows respect.
Book the island backwards from the wind, not forwards from the flight deal. Fix the coast that suits your month first (north for wind, east for calm-season space), then choose the hotel, then hunt the flight. Cheap flights into the wrong coast in the wrong month cost more in transfers, dead beach hours and rebooked tours than they ever saved.
Treat October and November as two different trips wearing similar temperatures. October sells calm seas and diving visibility at near-peak energy; November sells green quiet and soft prices with afternoon showers. Travellers who want the sea pick October. Travellers who want the island pick November.
A fisherman working a dhow hull at low tide. Dry months keep beach work and boat trips on schedule.
For costs in each season see the Morocco trip cost breakdown method applied to island prices, sort paperwork with our Zanzibar travel tips, and compare seasons with the best time guide for Morocco. The Zanzibar hub and the Africa collection hold the island planning guides, with all tips behind them.
Know before you go
Zanzibar at a glance
Best time to visit
June to October, December to February
- January: hot, some showers
- February: hot, some showers
- March: hot, rainy
- April: warm, very wet
- May: warm, rainy
- June: warm, some showers
- July: warm, some showers
- August: warm, some showers
- September: warm, some showers
- October: hot, rainy
- November: warm, rainy
- December: hot, rainy
Some showers Rainy Very wet
- Capital
- Zanzibar City (Stone Town)
- Currency
- Tanzanian shilling (TZS); US dollars widely accepted
- Language
- Swahili, English
- Time zone
- EAT, UTC+3
- Plugs
- Type D / G, 230 V
- Driving
- On the left
Emergency112
Frequently asked questions
What is the best month to visit Zanzibar?
July to September for the most reliable dry beach weather, or January to February for the warmest sea and calmest diving. September balances sun, warm water and thinning crowds. April is the wettest month and the one to skip for a first beach trip.
When is the rainy season in Zanzibar?
The long rains (masika) run mid-March to May with heavy downpours, peaking in April near 230mm. The short rains (vuli) fall in November into early December as brief afternoon showers. June to October is the long dry season and December to February the short dry season.
Which coast is best in the windy season?
From June to September the south-east kusi wind hits the east coast hardest, which suits Paje kitesurfers but chops the sea. Swimmers should base in Nungwi or Kendwa in the north-west, which stay sheltered and calm for diving and snorkelling.
When is Zanzibar cheapest?
April and May bring the deepest hotel discounts at 30 to 40 percent below peak, with November 20 to 30 percent below peak and far better weather. The dearest fortnight is Christmas to New Year, with festive rates 20 to 30 percent above December levels.
Can you combine Zanzibar with a safari?
Yes, and June to October lines up both: the mainland safari high season matches the island dry season. January to February pairs the short dry season on the island with calving season in the Serengeti. Ferries and short flights link Dar es Salaam, Arusha and the island daily.
Is the sea warm enough to swim all year?
Yes. Sea temperatures run about 25C in August to 29 to 30C from December to April. Air highs sit near 28 to 32C every month. The question is never warmth but wind, rain and visibility for diving.
Useful links (4)
- The Best Time to Visit Zanzibar, month-by-month guide, Zanzibar.com— zanzibar.com
- Zanzibar: When to Go, Seasons, Wind and Rains, WildToSea— wildtosea.com
- Best time to go to Zanzibar, weather and climate, Expert Africa— expertafrica.com
- Stone Town, Wikipedia— en.wikipedia.org
Photo credits
Thank you to Jonathan Dalrymple, Matt Kieffer from London, United Kingdom, ObonyoML and RichieRR for sharing these beautiful photographs and helping bring this guide to life.
Editorial byline
Jack Roberts Africa editor
Jack covers Morocco and Zanzibar for Epic Trip Ideas: medinas, desert routes, street food and Indian Ocean islands, with the logistics and costs sorted. Jack Roberts is a pen name the Epic Trip Ideas editors use for Morocco and Zanzibar; every guide is checked against official sources before it goes live.
