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Zanzibar Weather by Month
Average temperatures, rainfall and humidity for Zanzibar, Tanzania, month by month, built from OpenWeather’s historical records. Use it to see what a typical Zanzibar month looks like before you travel — then check the live Zanzibar forecast for the days ahead.
Warmest month
February
31°C average high
Coolest month
August
23°C average low
Wettest month
April
273 mm of rain
Driest month
August
25 mm of rain
Average temperature and rainfall in Zanzibar by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 31°C | 25°C | 15°C / 35°C | 46 mm | 81% | 16 km/h |
| February | 31°C | 26°C | 21°C / 37°C | 30 mm | 80% | 16 km/h |
| March | 31°C | 26°C | 20°C / 38°C | 211 mm | 81% | 12 km/h |
| April | 30°C | 25°C | 17°C / 38°C | 273 mm | 85% | 14 km/h |
| May | 29°C | 24°C | 21°C / 32°C | 98 mm | 84% | 17 km/h |
| June | 29°C | 23°C | 20°C / 31°C | 52 mm | 83% | 18 km/h |
| July | 28°C | 23°C | 17°C / 37°C | 32 mm | 83% | 18 km/h |
| August | 28°C | 23°C | 19°C / 32°C | 25 mm | 81% | 16 km/h |
| September | 29°C | 23°C | 17°C / 32°C | 26 mm | 81% | 15 km/h |
| October | 29°C | 24°C | 20°C / 33°C | 49 mm | 82% | 13 km/h |
| November | 30°C | 24°C | 20°C / 33°C | 92 mm | 84% | 11 km/h |
| December | 30°C | 25°C | 16°C / 34°C | 76 mm | 83% | 13 km/h |
Best time to visit Zanzibar
The most comfortable time to visit Zanzibar is generally July to September, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around April, totalling about 1,010 mm a year.
Travellers who prefer heat should aim for February, when highs average 31°C. April is the month to avoid if rain would spoil your plans — it averages 273 mm, roughly 11× the rainfall of the driest month (August).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Zanzibar forecast for what is happening now.