Zanzibar weather in September 2025

Expect daytime maximum temperatures of 86°F in Zanzibar, Tanzania in September and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 2.0 inches of rainfall in the month.

  • 86°F maximum daytime temperature in September in Zanzibar86
    86°F max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Zanzibar8
    8 days with some rainfall
  • 66°F minimum night-time temperature in September in Zanzibar66
    66°F min night temperature
  • 12 hours of daylight per day in September in Zanzibar12
    12 hours of daylight per day
  • High heat & humidity in September in ZanzibarH
    High heat & humidity
  • 2.0 inches monthly rainfall in September in Zanzibar2.0
    2.0 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Zanzibar11
    11+ (Extreme) UV index
  • 79°F sea temperature in September in Zanzibar79
    79°F sea temperature

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The September weather guide for Tanzania (Zanzibar) 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 Zanzibar in September?

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

How sunny is it in Zanzibar in September?

There are normally 8 hours of bright sunshine each day in Zanzibar in September - that's 66% of daylight hours.

How warm is the sea around Zanzibar in September?

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

Does it rain in Zanzibar in September?

There are usually 8 days with some rain in Zanzibar in September and the average monthly rainfall is 2.0 inches.

Zanzibar September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:23 18:23
Monday, 15th September 2025 06:16 18:20
Tuesday, 30th September 2025 06:09 18:18

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