Climate Insights for Grumeti River

The climate in Grumeti River is warm and mild. The average annual temperature is 23°C and approximately 838mm of precipitation falls per year. April is the wettest month, receiving around 164mm of rainfall. Grumeti River sits near the equator, so seasonal temperature differences are minimal throughout the year.

Grumeti River sees moderate temperature variation throughout the year, ranging from 17°C to 32°C. The warmest month is September, when average highs reach 32°C and the mean temperature sits around 25°C. July is the coolest month, with minimum temperatures around 17°C and an average of 23°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs.

Grumeti River is a moderately rainy area, receiving approximately 838mm of precipitation annually, which averages out to around 70mm per month. The wettest month is April, averaging 164mm of rainfall. November and December also tend to see above-average precipitation. The driest month is July, with just 7mm. That's 157mm 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.

Grumeti River 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 July, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, 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 Grumeti River, which began on June 21, 2026. Grumeti River sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 32°C, while the coldest stretch bottoms out in July near 17°C. Spring is next, beginning on September 23, 2026 — 91 days from now.

The best time to visit Grumeti River is during January, February, May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 41mm 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 Grumeti River 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.