Belgium weather in May 2026

Expect daytime maximum temperatures of 18°C in Belgium in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 69 mm of rainfall in the month.

  • 18°C maximum daytime temperature in May in Belgium (Brussels)18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in May in Belgium (Brussels)15
    15 days with some rainfall
  • 8°C minimum night-time temperature in May in Belgium (Brussels)8
    8°C min night temperature
  • 16 hours of daylight per day in May in Belgium (Brussels)16
    16 hours of daylight per day
  • No heat & humidity in May in Belgium (Brussels)0
    No heat & humidity
  • 69 mm monthly rainfall in May in Belgium (Brussels)69
    69 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Belgium (Brussels)6
    6 (High) UV index

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The May weather guide for Belgium (Brussels) 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.

Top Belgium destinations

Below are average maximum temperatures at popular countries, regions and places in Belgium in May. Select a holiday destination to see more weather parameters.

All Belgium destinations

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

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More about Belgium

How hot is it in Belgium in May?

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

How sunny is it in Belgium in May?

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

Does it rain in Belgium in May?

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

Belgium May sunrise & sunset times

Browse the sunrise and sunset times for Belgium in May 2026. Select a month to view Belgium sunrise and sunset times for the next 12 months. The Belgium sunrise and sunset times shown below are for Brussels.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:17 20:04
Saturday, 16th May 2026 04:52 20:27
Sunday, 31st May 2026 04:35 20:46

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