Climate averages 1991–2020
Thika weather
in September.
A warm, fairly dry month: the 5th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Thika: daytime highs average 24.7°C and nights cool to about 13.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 23 mm of rain on roughly 6 days, which makes September a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 06 min on an average September day.
The nearest other city in this atlas is Ruiru (17 km away). In September its highs average 24.3°C, about as warm as Thika, with 9.5 mm of rain.
Among the 37 cities listed in Kenya, Thika ranks 21st of 37 for the warmest September highs and 15th of 37 for the driest September (rainfall, lowest first). The mean September high of those 37 cities is 25.7°C; Thika is 1.1°C cooler than that mean.
From September to October, average highs rise by 0.4°C to 25.0°C, and monthly rainfall rises from 23 mm to 85 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Thika climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.1°C14.2°C | 14.2°C | 41 | 8.3 | 12.212 h |
| February | 26.7°C14.6°C | 14.6°C | 31 | 5.8 | 12.112 h |
| March | 26.4°C15.5°C | 15.5°C | 75 | 14.1 | 12.112 h |
| April | 24.4°C15.9°C | 15.9°C | 179 | 25.0 | 12.112 h |
| May | 23.4°C15.1°C | 15.1°C | 136 | 20.6 | 12.112 h |
| June | 22.4°C13.9°C | 13.9°C | 53 | 10.9 | 12.112 h |
| July | 21.8°C12.9°C | 12.9°C | 26 | 7.0 | 12.112 h |
| August | 22.5°C13.2°C | 13.2°C | 32 | 8.9 | 12.112 h |
| September, selected | 24.7°C13.7°C | 13.7°C | 23 | 6.2 | 12.112 h |
| October | 25.0°C14.9°C | 14.9°C | 85 | 14.4 | 12.112 h |
| November | 23.0°C15.0°C | 15.0°C | 161 | 23.8 | 12.212 h |
| December | 23.5°C14.4°C | 14.4°C | 72 | 15.5 | 12.212 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Ruiru in SeptemberKenya · 17 kmHigh 24.3°C · Low 13.2°C · 9.5 mm rain
- Karuri (Kiambu County), Kenya in SeptemberKenya · 38 kmHigh 22.1°C · Low 11.7°C · 16 mm rain
- Karuri (Murang'A), Kenya in SeptemberKenya · 39 kmHigh 25.3°C · Low 14.5°C · 27 mm rain
- Nairobi in SeptemberKenya · 40 kmHigh 24.2°C · Low 13.2°C · 16 mm rain
- Mlolongo in SeptemberKenya · 43 kmHigh 24.3°C · Low 13.5°C · 11 mm rain
- Limuru in SeptemberKenya · 48 kmHigh 20.3°C · Low 9.8°C · 32 mm rain
- Kitengela in SeptemberKenya · 51 kmHigh 24.5°C · Low 13.9°C · 11 mm rain
- Kikuyu in SeptemberKenya · 51 kmHigh 21.9°C · Low 11.5°C · 16 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Thika) is explained once on the Thika year overview and on the Sources, method and limits page.