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Kenya weather in September 2025
Expect daytime maximum temperatures of 29°C in Kenya in September and high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 66 mm of rainfall in the month.
- 29°C max day temperature
29 - 9 hours of sunshine per day
- 12 days with some rainfall
12 - 21°C min night temperature
21 - 12 hours of daylight per day
12 - Moderate heat & humidity
M - 66 mm of monthly rainfall
66 - 11+ (Extreme) UV index
11 - 25°C sea temperature
25
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Recommended for Kenya
The September weather guide for Kenya (Mombasa) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Kenya destinations
Below are average maximum temperatures at popular countries, regions and places in Kenya in September. Select a holiday destination to see more weather parameters.
All Kenya destinations
- Amboseli
- Bamburi Beach
- Diani Beach
- Galu Beach
- Garissa
- Kikambala
- Lamu
- Lodwar
- Malindi
- Mara Lodges
- Mombasa
- Nairobi
- Naivasha
- Nakuru
- Nanyuki
- Nyali Beach
- Samburu
- Voi
- Wajir
- Watamu
Metric (°C / mm) | Imperial (°F / inches)
More about Kenya
How hot is it in Kenya in September?
Daytime temperatures usually reach 29°C in Mombasa, Kenya in September with moderate heat and humidity, falling to 21°C at night.
How sunny is it in Kenya in September?
There are normally 9 hours of bright sunshine each day in Mombasa, Kenya in September - that's 71% of daylight hours.
How warm is the sea around Kenya in September?
The average sea temperature around Mombasa, Kenya in September is 25°C.
Does it rain in Kenya in September?
There are usually 12 days with some rain in Mombasa, Kenya in September and the average monthly rainfall is 66mm.
Kenya September sunrise & sunset times
Browse the sunrise and sunset times for Kenya in September 2025. Select a month to view Kenya sunrise and sunset times for the next 12 months. The Kenya sunrise and sunset times shown below are for Mombasa.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 06:20 | 18:22 |
| Monday, 15th September 2025 | 06:14 | 18:19 |
| Tuesday, 30th September 2025 | 06:07 | 18:15 |
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