Nairobi weather in September 2025

Expect daytime maximum temperatures of 24°C in Nairobi, Kenya in September based on long-term weather averages. There are 6 hours of sunshine per day on average.

  • 24°C maximum daytime temperature in September in Nairobi24
    24°C max day temperature
  • 6 hours of sunshine per day
  • 5 days with some rainfall in September in Nairobi5
    5 days with some rainfall
  • 11°C minimum night-time temperature in September in Nairobi11
    11°C min night temperature
  • 12 hours of daylight per day in September in Nairobi12
    12 hours of daylight per day
  • No heat & humidity in September in Nairobi0
    No heat & humidity
  • 29 mm monthly rainfall in September in Nairobi29
    29 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Nairobi11
    11+ (Extreme) UV index

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The September weather guide for Kenya (Nairobi) 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.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Kenya

How hot is it in Nairobi in September?

Daytime temperatures usually reach 24°C in Nairobi in September, falling to 11°C at night.

How sunny is it in Nairobi in September?

There are normally 6 hours of bright sunshine each day in Nairobi in September - that's 51% of daylight hours.

Does it rain in Nairobi in September?

There are usually 5 days with some rain in Nairobi in September and the average monthly rainfall is 29mm.

Nairobi September sunrise & sunset times

Browse the sunrise and sunset times for Nairobi in September 2025. Select a month to view Nairobi sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:30 18:35
Monday, 15th September 2025 06:25 18:31
Tuesday, 30th September 2025 06:19 18:26

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