Brazzaville weather in September 2025

Expect daytime maximum temperatures of 30°C in Brazzaville, Congo-Brazzaville in September and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average.

  • 30°C maximum daytime temperature in September in Brazzaville30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 4 days with some rainfall in September in Brazzaville4
    4 days with some rainfall
  • 21°C minimum night-time temperature in September in Brazzaville21
    21°C min night temperature
  • 12 hours of daylight per day in September in Brazzaville12
    12 hours of daylight per day
  • High heat & humidity in September in BrazzavilleH
    High heat & humidity
  • 34 mm monthly rainfall in September in Brazzaville34
    34 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Brazzaville11
    11+ (Extreme) UV index

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The September weather guide for Congo-Brazzaville (Brazzaville) 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 Brazzaville in September?

Daytime temperatures usually reach 30°C in Brazzaville in September with high heat and humidity, falling to 21°C at night.

How sunny is it in Brazzaville in September?

There are normally 6 hours of bright sunshine each day in Brazzaville in September - that's 46% of daylight hours.

Does it rain in Brazzaville in September?

There are usually 4 days with some rain in Brazzaville in September and the average monthly rainfall is 34mm.

Brazzaville September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:58 18:00
Monday, 15th September 2025 05:52 17:56
Tuesday, 30th September 2025 05:45 17:53

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