Weather in Brussels in August
August in Brussels is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Belgium, this is how Brussels actually wears August, not how a country centroid would. Compared with July and January, August sits in the middle of Brussels's year.
- Average temp
- 18°C
14–23°C
- Rainfall
- 90 mm
Showers likely
- Sunshine
- 6.1 h
hours per day
What to expect
Daytime
Warm days in Brussels in August. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
August is the wet side of the year in Brussels. Days can be heavy. Plans that cannot survive rain are the wrong plans.
This is not a reason to skip Brussels if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Brussels
Dates are a starting point for August.
Travel guides for Brussels
What to read before you book.
Average weather in Brussels
TemperatureRainfall
Similar weather in August
Other destinations whose August averages sit close to this one.
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FAQs about Brussels
Climate averages for Brussels, 1991–2020.
The best time to visit Brussels is between May and October, the most comfortable stretch of the year on these averages.
July is the hottest month, with an average around 19°C.
August is the wettest month, with about 90 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
