Nairobi weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – October, December – March
What is the weather like in Nairobi in September?
In September, Nairobi is warm: daytime highs average 24 °C, and nights cool down to about 13 °C. Expect around 6 hours of sunshine a day. Rain is rare: about 4 days bring 19 mm in total. All in all, September is an excellent month for a holiday in Nairobi.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 83 | 89 | 81 |
| Day | 23° | 24° | 25° |
| Night | 13° | 13° | 15° |
| Sun | 4 h | 6 h | 6 h |
| Rain days | 4 | 4 | 8 |
More details for September
- Daylight
- 12 h 6 min06:25 – 18:31
- UV index
- 16 · extremeclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+3Africa/Nairobi
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %47 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Nairobi in September: quick answers
Is Nairobi hot in September?
Warm rather than hot: in September, daytime highs in Nairobi average 24 °C and nights cool to about 13 °C.
Does it rain much in Nairobi in September?
Rain is rare: about 4 days bring 19 mm in total.
Nairobi month by month
The whole year in NairobiAll destinations: KenyaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences