Weather in Zanzibar in August 2025
Average weather
Average temperature in Zanzibar in August
The temperature in August is +27°C on average, with a range between a maximum of +29°C during the day and a minimum of +23°C at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +27°C to +27°C.
Is Zanzibar warm or cold in August?
Zanzibar is typically warm in August.
Maximum temperatures go up compared to the previous month from +27°C to +27°C. The minimum temperature also goes up from +23°C to +23°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the coolest months in Zanzibar, here is the comparison with other months:
Water temperature in Zanzibar in August
Water in Zanzibar in August is Warm. It varies from +25°C to +27°C, with an average of +26°C. This is almost similar to the air temperature, which averages +27°C.
The water temperature in August is one of the coldest of the entire year:
Can you swim in Zanzibar in August?
Climate in Zanzibar in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +27°C | +27°C | ||||
| Min. temperature | ||||||
| +21°C | +22°C | +22°C | ||||
| Max. temperature | ||||||
| +29°C | +29°C | +29°C | ||||
| Rainfall | ||||||
| 28 mm | 32 mm | 27 mm | ||||
| Wind | ||||||
| 4 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +26°C | +26°C | +26°C | ||||
| Humidity | ||||||
| 78% | 78% | 77% | ||||
| Air pressure | ||||||
| 1016 HPa | 1016 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 3 | 2 | 3 | ||||
| Cloudy days | ||||||
| 6 | 5 | 3 | ||||
| Rainy days | ||||||
| 22 | 24 | 24 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. The temperature levels stay the same in the area of +27°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 28 mm to 32 mm. Humidity levels don’t change as the month goes on, averaging around 78%. Winds are calmer in comparison to July, going down from 4 m/s to 3 m/s on average. The days becoming less sunny, going from 3 sunny days in July to 2 in August.
September brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Zanzibar is gradually decreasing during August, going from 5 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Zanzibar?
Climate Change over Years
The climate in Zanzibar in August has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+27°C) and the highest in 2019 (+29°C). The driest year was 2003 with only 487 mm of rainfall, and the wettest year was 1997 with 1353 mm.
FAQ
Is August a good time to visit Zanzibar?
Can you sunbathe in Zanzibar in August?
Can you swim in Zanzibar in August?
Is Zanzibar rainy in August?
Is it sunny in Zanzibar in August?
Other cities in Tanzania
Monthly weather in Zanzibar
Source of the data
For this page, we’ve looked at the typical weather in Zanzibar, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.