Click on a day for an hourly weather forecast
The temperatures in Nairobi in September are comfortable with low of 15°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Nairobi during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Nairobi in September 2025.
If you’re planning to visit Nairobi in the near future, we highly recommend that you review the 14 day weather forecast for Nairobi before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 26° / 14° | 2 | 29 | 0 | 66 mm | Perfect | Nairobi in January |
| February | 27° / 15° | 3 | 25 | 0 | 85 mm | Perfect | Nairobi in February |
| March | 28° / 16° | 5 | 26 | 0 | 112 mm | Perfect | Nairobi in March |
| April | 25° / 16° | 11 | 19 | 0 | 260 mm | Good | Nairobi in April |
| May | 23° / 15° | 8 | 23 | 0 | 198 mm | Good | Nairobi in May |
| June | 23° / 14° | 5 | 25 | 0 | 127 mm | Perfect | Nairobi in June |
| July | 23° / 13° | 3 | 28 | 0 | 71 mm | Perfect | Nairobi in July |
| August | 24° / 14° | 3 | 28 | 0 | 72 mm | Perfect | Nairobi in August |
| September | 25° / 15° | 4 | 26 | 0 | 75 mm | Perfect | Nairobi in September |
| October | 26° / 16° | 5 | 26 | 0 | 114 mm | Perfect | Nairobi in October |
| November | 25° / 15° | 7 | 23 | 0 | 157 mm | Good | Nairobi in November |
| December | 24° / 14° | 6 | 25 | 0 | 112 mm | Perfect | Nairobi in December |