Brussels weather in September 2021

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  • 20°C maximum daytime temperature in September in Brussels20
    20°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in September in Brussels16
    16 days with some rainfall
  • 11°C minimum night-time temperature in September in Brussels11
    11°C min night temperature
  • 13 hours of daylight per day in September in Brussels13
    13 hours of daylight per day
  • No heat & humidity in September in Brussels0
    No heat & humidity
  • 60 mm monthly rainfall in September in Brussels60
    60 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Brussels4
    4 (Moderate) UV index

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The September weather guide for Brussels, Belgium 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.

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How hot is it in Brussels in September?

Daytime temperatures usually reach 20°C in Brussels in September, falling to 11°C at night.

How sunny is it in Brussels in September?

There are normally 6 hours of bright sunshine each day in Brussels in September - that's 44% of daylight hours.

Does it rain in Brussels in September?

There are usually 16 days with some rain in Brussels in September and the average monthly rainfall is 60mm.

Metric (°C / mm)  |  Imperial (°F / inches)

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Brussels sunrise & sunset times for September 2021

Browse the sunrise and sunset times for Brussels in September 2021. Select a month to view Brussels sunrise & sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st September 2021 06:56 20:28
Wednesday, 15th September 2021 07:18 19:56
Thursday, 30th September 2021 07:42 19:23
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