August · Belgium
Best time to visit Brussels in August Weather, crowds & prices
Weather in Brussels in August
Average temperature 20°C, 67 mm of rain, about 19 days with 6+ hours of sunshine and 74% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
8.6/10
Ranked #3 of 12 months
- Avg temp
- 20°C
- Rainfall
- 67 mm
- Humidity
- 74%
- Days with 6h+ sun
- 19
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Brussels scores 8.6/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 20°C, 67 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Grand Place grandeur, chocolate shops, and Art Nouveau streets peak May through September.
August ranks 3rd of 12 for Brussels — one of the best windows
At 20°C (67°F) this is comfortable city weather in August, with sightseeing easiest before lunch and after the afternoon peak.
Budget for roughly 67 mm of rain this month — a flexible day or two helps — with about 19 days with 6+ hours of sunshine and 14.3 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Brussels at 8.6/10 (3rd of 12), just behind July at 8.9/10.
Pack light clothing, a hat and real sun protection, a packable rain layer.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Brussels in August?
- In August, Brussels averages 20°C, 67 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 8.6/10.
- Is August a good time to visit Brussels?
- August earns a 8.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Brussels in August?
- Expect about 67 mm of rain in August. Average humidity is 74% and there are about 19 days with 6+ hours of sunshine.
Curated in Brussels
Tickets & experiences
Things to do in Brussels
Brussels, Belgium. Live activities and tours from GetYourGuide, matched to this destination.