Climate Insights for Nanyuki

The climate in Nanyuki is temperate. The average annual temperature is 17°C and approximately 1588mm of precipitation falls per year. Nanyuki receives a notable amount of rainfall throughout the year, including during its driest month. Nanyuki sits near the equator, so seasonal temperature differences are minimal throughout the year.

Nanyuki sees moderate temperature variation throughout the year, ranging from 12°C to 25°C. The warmest month is March, when average highs reach 25°C and the mean temperature sits around 19°C. February is the coolest month, with minimum temperatures around 12°C and an average of 18°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Nanyuki is a fairly wet location, receiving approximately 1588mm of precipitation annually, which averages out to around 132mm per month. The wettest month is October, averaging 248mm of rainfall. November and April also tend to see above-average precipitation. The driest month is September, with just 60mm. That's 187mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Nanyuki 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 August, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Nanyuki, which began on June 21, 2026. Nanyuki 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 25°C, while the coldest stretch bottoms out in February near 12°C. Autumn is next, beginning on September 23, 2026 — 90 days from now.

The best time to visit Nanyuki is during January, February, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 71mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 25°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Nanyuki 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.