Mayumba weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Mayumba in September. Check more long-term weather averages for Mayumba in September before you book your next holiday to Gabon in 2025/2026.

  • 27°C maximum daytime temperature in September in Mayumba27
    27°C max day temperature
  • 2 hours of sunshine per day
  • 11 days with some rainfall in September in Mayumba11
    11 days with some rainfall
  • 21°C minimum night-time temperature in September in Mayumba21
    21°C min night temperature
  • 12 hours of daylight per day in September in Mayumba12
    12 hours of daylight per day
  • Moderate heat & humidity in September in MayumbaM
    Moderate heat & humidity
  • 41 mm monthly rainfall in September in Mayumba41
    41 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Mayumba11
    11+ (Extreme) UV index
  • 24°C sea temperature in September in Mayumba24
    24°C sea temperature

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The September weather guide for Gabon (Mayumba) 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 Mayumba in September?

Daytime temperatures usually reach 27°C in Mayumba in September with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Mayumba in September?

There are normally 2 hours of bright sunshine each day in Mayumba in September - that's 13% of daylight hours.

How warm is the sea around Mayumba in September?

The average sea temperature around Mayumba in September is 24°C.

Does it rain in Mayumba in September?

There are usually 11 days with some rain in Mayumba in September and the average monthly rainfall is 41mm.

Mayumba September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:16 18:19
Monday, 15th September 2025 06:10 18:15
Tuesday, 30th September 2025 06:03 18:11

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