Zanzibar weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Zanzibar in September. Check more long-term weather averages for Zanzibar in September before you book your next holiday to Tanzania in 2025/2026.

  • 30°C maximum daytime temperature in September in Zanzibar30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Zanzibar8
    8 days with some rainfall
  • 19°C minimum night-time temperature in September in Zanzibar19
    19°C 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
  • 52 mm monthly rainfall in September in Zanzibar52
    52 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Zanzibar11
    11+ (Extreme) UV index
  • 26°C sea temperature in September in Zanzibar26
    26°C 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Zanzibar in September?

Daytime temperatures usually reach 30°C in Zanzibar in September with high heat and humidity, falling to 19°C 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 26°C.

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 52mm.

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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