Ouesso weather in September 2025

Expect 29°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Ouesso in September. Check more long-term weather averages for Ouesso in September before you book your next holiday to Congo-Brazzaville in 2025/2026.

  • 29°C maximum daytime temperature in September in Ouesso29
    29°C max day temperature
  • 4 hours of sunshine per day
  • 14 days with some rainfall in September in Ouesso14
    14 days with some rainfall
  • 20°C minimum night-time temperature in September in Ouesso20
    20°C min night temperature
  • 12 hours of daylight per day in September in Ouesso12
    12 hours of daylight per day
  • High heat & humidity in September in OuessoH
    High heat & humidity
  • 230 mm monthly rainfall in September in Ouesso230
    230 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Ouesso11
    11+ (Extreme) UV index

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

Daytime temperatures usually reach 29°C in Ouesso in September with high heat and humidity, falling to 20°C at night.

How sunny is it in Ouesso in September?

There are normally 4 hours of bright sunshine each day in Ouesso in September - that's 35% of daylight hours.

Does it rain in Ouesso in September?

There are usually 14 days with some rain in Ouesso in September and the average monthly rainfall is 230mm.

Ouesso September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:52 18:00
Monday, 15th September 2025 05:47 17:54
Tuesday, 30th September 2025 05:43 17:49

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