Mafia Island weather in September 2025

Expect 86°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Mafia Island in September. Check more long-term weather averages for Mafia Island in September before you book your next holiday to Tanzania in 2025/2026.

  • 86°F maximum daytime temperature in September in Mafia Island86
    86°F max day temperature
  • 9 hours of sunshine per day
  • 4 days with some rainfall in September in Mafia Island4
    4 days with some rainfall
  • 66°F minimum night-time temperature in September in Mafia Island66
    66°F min night temperature
  • 12 hours of daylight per day in September in Mafia Island12
    12 hours of daylight per day
  • High heat & humidity in September in Mafia IslandH
    High heat & humidity
  • 0.9 inches monthly rainfall in September in Mafia Island0.9
    0.9 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Mafia Island11
    11+ (Extreme) UV index
  • 79°F sea temperature in September in Mafia Island79
    79°F sea temperature

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The September weather guide for Tanzania (Mafia Island) 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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How hot is it in Mafia Island in September?

Daytime temperatures usually reach 86°F in Mafia Island in September with high heat and humidity, falling to 66°F at night.

How sunny is it in Mafia Island in September?

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

How warm is the sea around Mafia Island in September?

The average sea temperature around Mafia Island in September is 79°F.

Does it rain in Mafia Island in September?

There are usually 4 days with some rain in Mafia Island in September and the average monthly rainfall is 0.9 inches.

Mafia Island September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:22 18:20
Monday, 15th September 2025 06:14 18:18
Tuesday, 30th September 2025 06:06 18:16

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