Climate Insights for Nyanza

The climate in Nyanza is warm and mild. The average annual temperature is 20°C and approximately 889mm of precipitation falls per year. April is the wettest month, receiving around 166mm of rainfall. Nyanza sits near the equator, so seasonal temperature differences are minimal throughout the year.

Nyanza sees moderate temperature variation throughout the year, ranging from 14°C to 26°C. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 21°C. July is the coolest month, with minimum temperatures around 14°C and an average of 20°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Nyanza is a moderately rainy area, receiving approximately 889mm of precipitation annually, which averages out to around 74mm per month. The wettest month is April, averaging 166mm of rainfall. November and March also tend to see above-average precipitation. The driest month is July, with just 4mm. That's 162mm 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.

Nyanza is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently autumn in Nyanza, which began on March 20, 2026. Nyanza sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in July near 14°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Nyanza is during January, February, May, June, July, August, September, October and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 54mm per month. 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 Nyanza 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.