What is the weather like in Brussels vs Paris in September?

In September, Brussels averages 21°C high / 12°C low with about 63 mm of rain; Paris averages 23°C high / 12°C low with about 55 mm.

Brussels vs Paris in September

Brussels and Paris are nearly tied in September — 86 vs 88 on SeasonMap's comfort score. Brussels is nice, a little rain, clean air; Paris is nice, a little rain, clean air.

Brussels vs Paris — September climate, side by side

	🇧🇪 Brussels	🇫🇷 Paris
Comfort score	86/100 (A)	88/100 (A)
Feels-like high	20°C	22°C
Avg high / low	21° / 12°	23° / 12°
Rainfall	63 mm	55 mm
Rainy days	11	10
Humidity	76%	72%
Air quality (AQI)	45	42

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Brussels vs Paris in September — FAQ

Is September better in Brussels or Paris?: Brussels and Paris are nearly tied in September — 86 vs 88 on SeasonMap's comfort score. Brussels is nice, a little rain, clean air; Paris is nice, a little rain, clean air.
What is the weather like in Brussels vs Paris in September?: In September, Brussels averages 21°C high / 12°C low with about 63 mm of rain; Paris averages 23°C high / 12°C low with about 55 mm.