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Brussels weather in August 2025
Expect daytime maximum temperatures of 23°C in Brussels, Belgium in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 16 days with some rainfall and typically 63 mm of rainfall in the month.
- 23°C max day temperature
23 - 7 hours of sunshine per day
- 16 days with some rainfall
16 - 13°C min night temperature
13 - 14 hours of daylight per day
14 - No heat & humidity
0 - 63 mm of monthly rainfall
63 - 6 (High) UV index
6
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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.
Metric (°C / mm) | Imperial (°F / inches)
More about Belgium
How hot is it in Brussels in August?
Daytime temperatures usually reach 23°C in Brussels in August, falling to 13°C at night.
How sunny is it in Brussels in August?
There are normally 7 hours of bright sunshine each day in Brussels in August - that's 48% of daylight hours.
Does it rain in Brussels in August?
There are usually 16 days with some rain in Brussels in August and the average monthly rainfall is 63mm.
Brussels August sunrise & sunset times
Browse the sunrise and sunset times for Brussels in August 2025. Select a month to view Brussels sunrise and sunset times for the next 12 months.
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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