Climate Insights for Kisiwani

The climate in Kisiwani is warm and mild. The average annual temperature is 23°C and approximately 785mm of precipitation falls per year. April is the wettest month, receiving around 149mm of rainfall. Kisiwani sits near the equator, so seasonal temperature differences are minimal throughout the year.

Kisiwani sees moderate temperature variation throughout the year, ranging from 16°C to 31°C. The warmest month is March, when average highs reach 31°C and the mean temperature sits around 25°C. July is the coolest month, with minimum temperatures around 16°C and an average of 21°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Kisiwani is a relatively dry area, receiving approximately 785mm of precipitation annually, which averages out to around 65mm per month. The wettest month is April, averaging 149mm of rainfall. May and March also tend to see above-average precipitation. The driest month is July, with just 9mm. That's 141mm less than April, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Kisiwani is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

It is currently winter in Kisiwani, which began on June 21, 2026. Kisiwani sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in March at around 31°C, while the coldest stretch bottoms out in July near 16°C. Spring is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Kisiwani is during January, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 44mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 31°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Kisiwani based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.