Watamu weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Watamu in September. Check more long-term weather averages for Watamu in September before you book your next holiday to Kenya in 2025/2026.

  • 28°C maximum daytime temperature in September in Watamu28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in September in Watamu11
    11 days with some rainfall
  • 21°C minimum night-time temperature in September in Watamu21
    21°C min night temperature
  • 12 hours of daylight per day in September in Watamu12
    12 hours of daylight per day
  • Moderate heat & humidity in September in WatamuM
    Moderate heat & humidity
  • 60 mm monthly rainfall in September in Watamu60
    60 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Watamu11
    11+ (Extreme) UV index
  • 25°C sea temperature in September in Watamu25
    25°C sea temperature

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The September weather guide for Kenya (Watamu) 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 Watamu in September?

Daytime temperatures usually reach 28°C in Watamu in September with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Watamu in September?

There are normally 9 hours of bright sunshine each day in Watamu in September - that's 75% of daylight hours.

How warm is the sea around Watamu in September?

The average sea temperature around Watamu in September is 25°C.

Does it rain in Watamu in September?

There are usually 11 days with some rain in Watamu in September and the average monthly rainfall is 60mm.

Watamu September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:19 18:21
Monday, 15th September 2025 06:12 18:18
Tuesday, 30th September 2025 06:06 18:14

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