Climate averages 1991–2020
Nairobi weather
in August.
A warm, fairly dry month: the 10th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Nairobi: daytime highs average 22.3°C and nights cool to about 12.6°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 21 mm of rain on roughly 4 days, which makes August a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average August day.
The nearest other city in this atlas is Karuri (Kiambu County), Kenya (14 km away). In August its highs average 20.2°C, 2.0°C cooler than Nairobi, with 21 mm of rain.
Among the 37 cities listed in Kenya, Nairobi ranks 25th of 37 for the warmest August highs and joint 11th of 37 for the driest August (rainfall, lowest first). The mean August high of those 37 cities is 24.3°C; Nairobi is 2.1°C cooler than that mean.
From August to September, average highs rise by 2.0°C to 24.2°C, and monthly rainfall falls from 21 mm to 16 mm.
The annual picture
August 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
Nairobi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.6°C14.4°C | 14.4°C | 35 | 6.3 | 12.212 h |
| February | 26.8°C14.9°C | 14.9°C | 30 | 4.6 | 12.212 h |
| March | 26.5°C15.6°C | 15.6°C | 57 | 10.3 | 12.112 h |
| April | 24.4°C15.8°C | 15.8°C | 114 | 19.4 | 12.112 h |
| May | 23.2°C14.9°C | 14.9°C | 92 | 16.0 | 12.112 h |
| June | 22.2°C13.6°C | 13.6°C | 42 | 7.9 | 12.012 h |
| July | 21.7°C12.4°C | 12.4°C | 13 | 3.2 | 12.112 h |
| August, selected | 22.3°C12.6°C | 12.6°C | 21 | 3.9 | 12.112 h |
| September | 24.2°C13.2°C | 13.2°C | 16 | 3.3 | 12.112 h |
| October | 25.0°C14.5°C | 14.5°C | 40 | 9.3 | 12.112 h |
| November | 23.2°C14.8°C | 14.8°C | 83 | 17.6 | 12.212 h |
| December | 24.0°C14.4°C | 14.4°C | 47 | 10.2 | 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
August in nearby cities
- Karuri (Kiambu County), Kenya in AugustKenya · 14 kmHigh 20.2°C · Low 11.1°C · 21 mm rain
- Ongata Rongai in AugustKenya · 14 kmHigh 21.9°C · Low 12.6°C · 15 mm rain
- Kikuyu in AugustKenya · 18 kmHigh 19.9°C · Low 10.9°C · 21 mm rain
- Ngong in AugustKenya · 18 kmHigh 21.6°C · Low 11.8°C · 21 mm rain
- Mlolongo in AugustKenya · 19 kmHigh 22.4°C · Low 12.9°C · 15 mm rain
- Ruiru in AugustKenya · 22 kmHigh 22.2°C · Low 12.6°C · 12 mm rain
- Kitengela in AugustKenya · 27 kmHigh 22.6°C · Low 13.3°C · 15 mm rain
- Limuru in AugustKenya · 27 kmHigh 18.5°C · Low 9.3°C · 46 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 Nairobi) is explained once on the Nairobi year overview and on the Sources, method and limits page.
Kikuyu, Karuri (Kiambu County), Kenya and Ngong lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.