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Brussels Weather in September

Belgium

Comfortable early autumn weather around 18°C brings fewer crowds and crisp air perfect for leisurely sightseeing and enjoying Belgian cuisine at sidewalk restaurants before summer tourism truly fades.

Avg High

21°C

Avg Low

13°C

Daily Rain

2.2mm

Rainfall

Low

💡 Best months to visit Brussels: Aug, Jun, Jul

Brussels Weather by Month

Month	High	Low	Rain
Jan	6°C	2°C	2.6mm
Feb	9°C	2°C	1.7mm
Mar	11°C	3°C	2mm
Apr	12°C	4°C	1.6mm
May	18°C	8°C	2.1mm
Jun	23°C	13°C	2.6mm
Jul	23°C	14°C	3.1mm
Aug	23°C	14°C	2mm
Sep	21°C	13°C	2.2mm
Oct	17°C	10°C	3.2mm
Nov	10°C	5°C	2.6mm
Dec	7°C	3°C	2.7mm

About Brussels

Sample authentic Belgian chocolate, explore Grand Place's ornate guildhalls, and enjoy surreal art culture in Europe's multicultural capital.

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