Diani Beach weather in September 2025

Expect 84°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Diani Beach in September. Check more long-term weather averages for Diani Beach in September before you book your next holiday to Kenya in 2025/2026.

  • 84°F maximum daytime temperature in September in Diani Beach84
    84°F max day temperature
  • 9 hours of sunshine per day
  • 12 days with some rainfall in September in Diani Beach12
    12 days with some rainfall
  • 70°F minimum night-time temperature in September in Diani Beach70
    70°F min night temperature
  • 12 hours of daylight per day in September in Diani Beach12
    12 hours of daylight per day
  • High heat & humidity in September in Diani BeachH
    High heat & humidity
  • 2.5 inches monthly rainfall in September in Diani Beach2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Diani Beach11
    11+ (Extreme) UV index
  • 77°F sea temperature in September in Diani Beach77
    77°F sea temperature

More about Diani Beach

Diani Beach by month

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The September weather guide for Kenya (Diani Beach) 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)  |  Imperial (°F)

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More about Kenya

How hot is it in Diani Beach in September?

Daytime temperatures usually reach 84°F in Diani Beach in September with high heat and humidity, falling to 70°F at night.

How sunny is it in Diani Beach in September?

There are normally 9 hours of bright sunshine each day in Diani Beach in September - that's 71% of daylight hours.

How warm is the sea around Diani Beach in September?

The average sea temperature around Diani Beach in September is 77°F.

Does it rain in Diani Beach in September?

There are usually 12 days with some rain in Diani Beach in September and the average monthly rainfall is 2.5 inches.

Diani Beach September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:21 18:22
Monday, 15th September 2025 06:14 18:19
Tuesday, 30th September 2025 06:07 18:16

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