Zanzibar Weather
Thanks to its position in the Zanzibar Archipelago off the coast of Tanzania, this island paradise enjoys a year-round tropical climate.
Surrounded by the warm waters of the Indian Ocean
The island experiences temperate conditions throughout the year, with relatively small changes in temperature from month to month.
A snapshot of the average weather conditions:
Average
daytime
temperatures between 25°C and 32°C
Warm
conditions
year-round, with no cold season
Slightly cooler evenings
particularly outside the hottest months
Weather
influenced
more by humidity and wind than temperature alone
Compared to inland East Africa, Zanzibar’s coastal climate feels steady and predictable. Instead of sharp seasonal shifts, conditions change gradually across the year. With this guide, we’ll cover the weather conditions month by month across the full year. Need more focused guidance on the best time to visit based on what you want to do? Check out our detailed guide to the best time to visit Zanzibar.
Zanzibar Weather by Month
How is the weather in Zanzibar in: January
- Average daytime temperature: 30°C
- Rainfall: Low
- Great for: swimming, snorkelling
- January feels hot and bright, with long sunny days and very warm sea temperatures.
How is the weather in Zanzibar in: February
- Average daytime temperature: 30°C
- Rainfall: Low
- Great for: snorkelling, diving
- Conditions remain hot, with higher humidity and calm seas.
How is the weather in Zanzibar in: March
- Average daytime temperature: 29°C
- Rainfall: Increasing
- Great for: longer stays, quieter beaches
- March feels warmer and more humid, with occasional tropical showers.
How is the weather in Zanzibar in: April
- Average daytime temperature: 28°C
- Rainfall: High
- Great for: travellers seeking fewer people
- April is noticeably humid, with frequent rainfall and heavier air.
How is the weather in Zanzibar in: May
- Average daytime temperature: 27°C
- Rainfall: Reducing
- Great for: low-key coastal time
- Rainfall gradually eases, and conditions begin to feel lighter.
How is the weather in Zanzibar in: June
- Average daytime temperature: 26°C
- Rainfall: Low
- Great for: comfortable outdoor time
- June feels fresher and drier, with cooler evenings.
How is the weather in Zanzibar in: July
- Average daytime temperature: 25–26°C
- Rainfall: Very low
- Great for: swimming, relaxed days
- July feels cooler and breezier, especially after sunset.
How is the weather in Zanzibar in: August
- Average daytime temperature: 26°C
- Rainfall: Very low
- Great for: snorkelling, beach days
- Dry, clear conditions with steady coastal breezes.
How is the weather in Zanzibar in: September
- Average daytime temperature: 27°C
- Rainfall: Very low
- Great for: snorkelling, diving
- Calm seas and warming air temperatures.
How is the weather in Zanzibar in: October
- Average daytime temperature: 28°C
- Rainfall: Low
- Great for: swimming, coastal stays
- Warmer days with slowly rising humidity.
How is the weather in Zanzibar in: November
- Average daytime temperature: 28–29°C
- Rainfall: Short showers
- Great for: quieter beaches
- Warm conditions with passing rainfall.
How is the weather in Zanzibar in: December
- Average daytime temperature: 29°C
- Rainfall: Short showers early in the month
- Great for: swimming, snorkelling
- Warm and humid, becoming brighter toward the end of the month.
Planning Your Trip
Tropical weather doesn’t follow exact patterns. Short showers, cloud cover and day-to-day variation are normal. Monthly guidance should be read as a reference, not a forecast. Always check the weather forecast when you are in your destination for the most up-to-date information. If you are ready to explore timing, see our bespoke itineraries and travel styles, visit our Zanzibar holidays page or explore our Tanzania safari holidays.
Best Time to Visit Zanzibar FAQs
Q: What is the coldest month in Zanzibar?
Zanzibar’s coolest month is usually July, although daytime temperatures still sit around 25-27C. The Kusi wind brings fresher mornings and clearer skies, which creates excellent beach conditions, especially in the north and west. Evenings feel cooler but never cold, and many travellers consider July the most comfortable month to visit.
Q: Is Zanzibar hot all year?
Yes, Zanzibar stays warm year round, with temperatures in the mid 20s to low 30s Celsius. The main variation is humidity, which increases during the rainy seasons in November to December and March to May. Sea temperatures remain warm throughout the year, so swimming is enjoyable in every season.
Q: When should I avoid Zanzibar?
Most travellers avoid April and early May, when the long rains bring persistent downpours and reduced visibility for swimming and diving. Humidity rises and some boutique lodges close temporarily. Outside these weeks, Zanzibar is a reliable year round destination.
Q: Does Zanzibar get hurricanes?
No, Zanzibar lies outside the Southwest Indian Ocean cyclone belt, so it does not experience hurricanes or tropical cyclones. Weather patterns come from predictable trade winds and seasonal rains instead. This makes Zanzibar a safe choice for long term holiday planning.
Q: Is April a bad month to visit Zanzibar?
April is generally the least appealing month for beach holidays because of the long rains, which bring persistent showers and reduce visibility for snorkelling and diving. Some smaller lodges close during this period. April suits travellers who prioritise price above weather certainty.
Q: Is Zanzibar good in August?
Yes, August is one of the best months to visit, with dry weather, low humidity and calm seas on the north and west coasts. It is also ideal for a Serengeti safari connection, since wildlife sightings peak at the same time. Demand is high in August, so early booking is essential.
Q: Is December a good time to visit Zanzibar?
December is a great time to visit, particularly from mid month onwards when the short rains ease and sunny days return. Early December includes brief tropical showers, while late December feels lively and festive. Availability is limited during the holiday period, so advance planning is recommended.