What is the weather like in Madrid vs San Sebastián in September?

In September, Madrid averages 27°C high / 16°C low with about 29 mm of rain; San Sebastián averages 23°C high / 17°C low with about 133 mm.

Madrid vs San Sebastián in September

Madrid is the better pick in September — 92 vs 83 on SeasonMap's comfort score. Madrid is warm, dry, clean air, while San Sebastián is warm, rainy, clean air.

Madrid vs San Sebastián — September climate, side by side

	🇪🇸 Madrid	🇪🇸 San Sebastián
Comfort score	92/100 (S)	83/100 (A)
Feels-like high	26°C	24°C
Avg high / low	27° / 16°	23° / 17°
Rainfall	29 mm	133 mm
Rainy days	3	11
Humidity	49%	79%
Air quality (AQI)	46	39

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

Month by month

Madrid vs San Sebastián in September — FAQ

Is September better in Madrid or San Sebastián?: Madrid is the better pick in September — 92 vs 83 on SeasonMap's comfort score. Madrid is warm, dry, clean air, while San Sebastián is warm, rainy, clean air.
What is the weather like in Madrid vs San Sebastián in September?: In September, Madrid averages 27°C high / 16°C low with about 29 mm of rain; San Sebastián averages 23°C high / 17°C low with about 133 mm.