Brussels Weather in September
Belgium · 30-year monthly averages
🌟 Great time to visit
September in Brussels is pleasantly warm, with average daytime highs around 20°C (67°F) and nighttime lows near 11°C (52°F). Expect roughly 65mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
Avg high
20°C
67°F
Avg low
11°C
52°F
Rainfall
65mm
moderate
Rainy days
10
days with ≥1mm
☀️ About 155 hours of sunshine over the month (~5h/day).
🎒 What to pack
- light layers
- comfortable walking shoes
September vs the rest of the year
FAQ
- How hot is Brussels in September?
- September in Brussels is pleasantly warm, with average daytime highs around 20°C (67°F) and nighttime lows near 11°C (52°F). Expect roughly 65mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
- Does it rain a lot in Brussels in September?
- Brussels sees around 65mm of precipitation in September on average — moderate by global standards.
- Is September a good time to visit Brussels?
- September is one of the best months to visit Brussels — comfortable temperatures and manageable rainfall.