What is the weather like in Barcelona vs Bilbao in September?

In September, Barcelona averages 27°C high / 21°C low with about 76 mm of rain; Bilbao averages 26°C high / 15°C low with about 93 mm.

Barcelona vs Bilbao in September

Barcelona and Bilbao are nearly tied in September — 84 vs 86 on SeasonMap's comfort score. Barcelona is warm, a little rain, clean air; Bilbao is warm, rainy, clean air.

Barcelona vs Bilbao — September climate, side by side

	Barcelona	Bilbao
Comfort score	84/100 (A)	86/100 (A)
Feels-like high	28°C	26°C
Avg high / low	27° / 21°	26° / 15°
Rainfall	76 mm	93 mm
Rainy days	5	10
Humidity	78%	79%
Air quality (AQI)	48	39

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

Barcelona vs Bilbao in September — FAQ

Is September better in Barcelona or Bilbao?: Barcelona and Bilbao are nearly tied in September — 84 vs 86 on SeasonMap's comfort score. Barcelona is warm, a little rain, clean air; Bilbao is warm, rainy, clean air.
What is the weather like in Barcelona vs Bilbao in September?: In September, Barcelona averages 27°C high / 21°C low with about 76 mm of rain; Bilbao averages 26°C high / 15°C low with about 93 mm.