Climate averages 1991–2020
Ongata Rongai weather
in September.
A warm, very dry month: the 6th warmest and the 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 Ongata Rongai: daytime highs average 23.8°C and nights cool to about 13.2°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 12 mm of rain on roughly 2 days, which makes September a very dry month (the 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 Ngong (11 km away). In September its highs average 23.6°C, about as warm as Ongata Rongai, with 16 mm of rain.
Among the 37 cities listed in Kenya, Ongata Rongai ranks 27th of 37 for the warmest September highs and 10th of 37 for the driest September (rainfall, lowest first). The mean September high of those 37 cities is 25.7°C; Ongata Rongai is 1.9°C cooler than that mean.
From September to October, average highs rise by 0.8°C to 24.6°C, and monthly rainfall rises from 12 mm to 31 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
Ongata Rongai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.1°C14.6°C | 14.6°C | 31 | 5.6 | 12.212 h |
| February | 26.3°C15.0°C | 15.0°C | 23 | 4.4 | 12.212 h |
| March | 25.9°C15.6°C | 15.6°C | 49 | 9.4 | 12.112 h |
| April | 23.9°C15.7°C | 15.7°C | 100 | 16.1 | 12.112 h |
| May | 22.8°C14.7°C | 14.7°C | 82 | 14.7 | 12.112 h |
| June | 21.8°C13.4°C | 13.4°C | 34 | 6.4 | 12.012 h |
| July | 21.3°C12.3°C | 12.3°C | 11 | 2.6 | 12.012 h |
| August | 21.9°C12.6°C | 12.6°C | 15 | 3.1 | 12.112 h |
| September, selected | 23.8°C13.2°C | 13.2°C | 12 | 2.2 | 12.112 h |
| October | 24.6°C14.5°C | 14.5°C | 31 | 6.9 | 12.112 h |
| November | 22.8°C14.7°C | 14.7°C | 75 | 15.8 | 12.212 h |
| December | 23.5°C14.5°C | 14.5°C | 45 | 9.3 | 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
- Ngong in SeptemberKenya · 11 kmHigh 23.6°C · Low 12.5°C · 16 mm rain
- Nairobi in SeptemberKenya · 14 kmHigh 24.2°C · Low 13.2°C · 16 mm rain
- Mlolongo in SeptemberKenya · 20 kmHigh 24.3°C · Low 13.5°C · 11 mm rain
- Kikuyu in SeptemberKenya · 20 kmHigh 21.9°C · Low 11.5°C · 16 mm rain
- Kitengela in SeptemberKenya · 24 kmHigh 24.5°C · Low 13.9°C · 11 mm rain
- Karuri (Kiambu County), Kenya in SeptemberKenya · 24 kmHigh 22.1°C · Low 11.7°C · 16 mm rain
- Limuru in SeptemberKenya · 34 kmHigh 20.3°C · Low 9.8°C · 32 mm rain
- Ruiru in SeptemberKenya · 35 kmHigh 24.3°C · Low 13.2°C · 9.5 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 Ongata Rongai) is explained once on the Ongata Rongai year overview and on the Sources, method and limits page.