Brussels Weather in September
19.6°C high · 11.1°C low · 63 mm rain · 4.8h sun
Yes — Sep is one of the best months to visit Brussels, with mild weather and 4.8h of daily sunshine.
September at a glance
| Metric | Value |
|---|---|
| Average high | 19.6°C |
| Average low | 11.1°C |
| Rainfall | 63 mm |
| Sunshine | 4.8 hours/day |
| Daylight | 12.4 hours |
What to pack in September
Pack a jacket and layers for Brussels in September.
Brussels weather by month
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Frequently asked questions
What is the weather in Brussels in September?
Highs of 19.6°C and lows of 11.1°C, with about 63 mm of rain and 4.8 hours of sunshine per day.
Is September a good time to visit Brussels?
Yes — Sep is one of the best months to visit Brussels, with mild weather and 4.8h of daily sunshine.
What to do in Brussels · Best time to visit Brussels
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.