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

In September, Barcelona averages 27°C high / 21°C low with about 76 mm of rain; San Sebastián averages 23°C high / 17°C low with about 133 mm.

Barcelona vs San Sebastián in September

Barcelona and San Sebastián are nearly tied in September — 84 vs 83 on SeasonMap's comfort score. Barcelona is warm, a little rain, clean air; San Sebastián is warm, rainy, clean air.

Barcelona vs San Sebastián — September climate, side by side

	Barcelona	San Sebastián
Comfort score	84/100 (A)	83/100 (A)
Feels-like high	28°C	24°C
Avg high / low	27° / 21°	23° / 17°
Rainfall	76 mm	133 mm
Rainy days	5	11
Humidity	78%	79%
Air quality (AQI)	48	39

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

Barcelona vs San Sebastián in September — FAQ

Is September better in Barcelona or San Sebastián?: Barcelona and San Sebastián are nearly tied in September — 84 vs 83 on SeasonMap's comfort score. Barcelona is warm, a little rain, clean air; San Sebastián is warm, rainy, clean air.
What is the weather like in Barcelona vs San Sebastián in September?: In September, Barcelona averages 27°C high / 21°C low with about 76 mm of rain; San Sebastián averages 23°C high / 17°C low with about 133 mm.