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

In September, Bilbao averages 26°C high / 15°C low with about 93 mm of rain; San Sebastián averages 23°C high / 17°C low with about 133 mm.

Bilbao vs San Sebastián in September

Bilbao and San Sebastián are nearly tied in September — 86 vs 83 on SeasonMap's comfort score. Bilbao is warm, rainy, clean air; San Sebastián is warm, rainy, clean air.

Bilbao vs San Sebastián — September climate, side by side

	🇪🇸 Bilbao	🇪🇸 San Sebastián
Comfort score	86/100 (A)	83/100 (A)
Feels-like high	26°C	24°C
Avg high / low	26° / 15°	23° / 17°
Rainfall	93 mm	133 mm
Rainy days	10	11
Humidity	79%	79%
Air quality (AQI)	39	39

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

Month by month

Bilbao vs San Sebastián in September — FAQ

Is September better in Bilbao or San Sebastián?: Bilbao and San Sebastián are nearly tied in September — 86 vs 83 on SeasonMap's comfort score. Bilbao is warm, rainy, clean air; San Sebastián is warm, rainy, clean air.
What is the weather like in Bilbao vs San Sebastián in September?: In September, Bilbao averages 26°C high / 15°C low with about 93 mm of rain; San Sebastián averages 23°C high / 17°C low with about 133 mm.