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.
Temperatures
25° / 15°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
75
mm
Sun Hours
11.6
Hrs