Belgium weather in August 2025

Expect 23°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Belgium in August. Check more long-term weather averages for Belgium in August before you book your next holiday to Belgium in 2025/2026.

  • 23°C maximum daytime temperature in August in Belgium (Brussels)23
    23°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in August in Belgium (Brussels)16
    16 days with some rainfall
  • 13°C minimum night-time temperature in August in Belgium (Brussels)13
    13°C min night temperature
  • 14 hours of daylight per day in August in Belgium (Brussels)14
    14 hours of daylight per day
  • No heat & humidity in August in Belgium (Brussels)0
    No heat & humidity
  • 63 mm monthly rainfall in August in Belgium (Brussels)63
    63 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in Belgium (Brussels)6
    6 (High) UV index

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The August 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 August. 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 August?

Daytime temperatures usually reach 23°C in Brussels, Belgium in August, falling to 13°C at night.

How sunny is it in Belgium in August?

There are normally 7 hours of bright sunshine each day in Brussels, Belgium in August - that's 48% of daylight hours.

Does it rain in Belgium in August?

There are usually 16 days with some rain in Brussels, Belgium in August and the average monthly rainfall is 63mm.

Belgium August sunrise & sunset times

Browse the sunrise and sunset times for Belgium in August 2025. 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 August 2025 05:09 20:28
Saturday, 16th August 2025 05:32 20:01
Sunday, 31st August 2025 05:55 19:30

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