Climate averages 1991–2020
Mwala weather
in September.
A warm, very dry month: the 5th warmest and the joint 2nd 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 Mwala: daytime highs average 26.0°C and nights cool to about 15.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 2.6 mm of rain on fewer than one day, which makes September a very dry month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 06 min on an average September day.
The nearest other city in this atlas is Thika (56 km away). In September its highs average 24.7°C, 1.4°C cooler than Mwala, with 23 mm of rain.
Among the 37 cities listed in Kenya, Mwala ranks 16th of 37 for the warmest September highs and joint 2nd of 37 for the driest September (rainfall, lowest first). The mean September high of those 37 cities is 25.7°C; Mwala is 0.3°C warmer than that mean.
From September to October, average highs rise by 0.6°C to 26.7°C, and monthly rainfall rises from 2.6 mm to 33 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
Mwala climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.1°C16.4°C | 16.4°C | 40 | 9.3 | 12.212 h |
| February | 27.7°C16.9°C | 16.9°C | 25 | 6.5 | 12.212 h |
| March | 27.3°C17.7°C | 17.7°C | 70 | 14.3 | 12.112 h |
| April | 25.6°C17.8°C | 17.8°C | 109 | 20.5 | 12.112 h |
| May | 24.7°C16.6°C | 16.6°C | 40 | 10.5 | 12.112 h |
| June | 24.0°C15.1°C | 15.1°C | 5.5 | 1.5 | 12.012 h |
| July | 23.5°C14.2°C | 14.2°C | 1.8 | 0.4 | 12.012 h |
| August | 24.0°C14.5°C | 14.5°C | 2.6 | 0.8 | 12.112 h |
| September, selected | 26.0°C15.2°C | 15.2°C | 2.6 | 0.7 | 12.112 h |
| October | 26.7°C16.5°C | 16.5°C | 33 | 8.0 | 12.112 h |
| November | 24.6°C17.1°C | 17.1°C | 155 | 22.2 | 12.212 h |
| December | 24.7°C16.7°C | 16.7°C | 80 | 17.6 | 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
- Thika in SeptemberKenya · 56 kmHigh 24.7°C · Low 13.7°C · 23 mm rain
- Kitengela in SeptemberKenya · 57 kmHigh 24.5°C · Low 13.9°C · 11 mm rain
- Mlolongo in SeptemberKenya · 57 kmHigh 24.3°C · Low 13.5°C · 11 mm rain
- Ruiru in SeptemberKenya · 59 kmHigh 24.3°C · Low 13.2°C · 9.5 mm rain
- Nairobi in SeptemberKenya · 71 kmHigh 24.2°C · Low 13.2°C · 16 mm rain
- Ongata Rongai in SeptemberKenya · 77 kmHigh 23.8°C · Low 13.2°C · 12 mm rain
- Karuri (Murang'A), Kenya in SeptemberKenya · 79 kmHigh 25.3°C · Low 14.5°C · 27 mm rain
- Karuri (Kiambu County), Kenya in SeptemberKenya · 80 kmHigh 22.1°C · Low 11.7°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 Mwala) is explained once on the Mwala year overview and on the Sources, method and limits page.