Brussels weather in May 2021

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  • 18°C maximum daytime temperature in May in Brussels18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in May in Brussels15
    15 days with some rainfall
  • 8°C minimum night-time temperature in May in Brussels8
    8°C min night temperature
  • 16 hours of daylight per day in May in Brussels16
    16 hours of daylight per day
  • No heat & humidity in May in Brussels0
    No heat & humidity
  • 69 mm monthly rainfall in May in Brussels69
    69 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Brussels6
    6 (High) UV index

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The May 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 May?

Daytime temperatures usually reach 18°C in Brussels in May, falling to 8°C at night.

How sunny is it in Brussels in May?

There are normally 7 hours of bright sunshine each day in Brussels in May - that's 42% of daylight hours.

Does it rain in Brussels in May?

There are usually 15 days with some rain in Brussels in May and the average monthly rainfall is 69mm.

Brussels sunrise & sunset times for May 2021

Browse the sunrise & sunset times for Brussels in May 2021. Select a month to view Brussels sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Saturday, 1st May 2021 06:16 21:04
Sunday, 16th May 2021 05:52 21:27
Monday, 31st May 2021 05:35 21:46
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is hot in Belgium in May for 2021/2022?

Below are average maximum temperatures at popular destinations in Belgium in May. Select a destination to see more weather parameters.

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