What is the weather like in Bilbao vs Sierra Nevada in September?

In September, Bilbao averages 26°C high / 15°C low with about 93 mm of rain; Sierra Nevada averages 20°C high / 10°C low with about 46 mm.

Bilbao vs Sierra Nevada in September

Bilbao is the better pick in September — 86 vs 13 on SeasonMap's comfort score. Bilbao is warm, rainy, clean air, while Sierra Nevada is nice, a little rain, clean air.

Bilbao vs Sierra Nevada — September climate, side by side

	Bilbao	Sierra Nevada
Comfort score	86/100 (A)	13/100 (F)
Feels-like high	26°C	19°C
Avg high / low	26° / 15°	20° / 10°
Rainfall	93 mm	46 mm
Rainy days	10	8
Humidity	79%	53%
Air quality (AQI)	39	37

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

Bilbao vs Sierra Nevada in September — FAQ

Is September better in Bilbao or Sierra Nevada?: Bilbao is the better pick in September — 86 vs 13 on SeasonMap's comfort score. Bilbao is warm, rainy, clean air, while Sierra Nevada is nice, a little rain, clean air.
What is the weather like in Bilbao vs Sierra Nevada in September?: In September, Bilbao averages 26°C high / 15°C low with about 93 mm of rain; Sierra Nevada averages 20°C high / 10°C low with about 46 mm.