What is the weather like in Napa vs Santa Barbara in September?

In September, Napa averages 30°C high / 13°C low with about 5 mm of rain; Santa Barbara averages 26°C high / 16°C low with about 6 mm.

Napa vs Santa Barbara in September

Santa Barbara is the better pick in September — 92 vs 88 on SeasonMap's comfort score. Santa Barbara is warm, dry, clean air, while Napa is hot, dry, clean air.

Napa vs Santa Barbara — September climate, side by side

	🇺🇸 Napa	🇺🇸 Santa Barbara
Comfort score	88/100 (A)	92/100 (S)
Feels-like high	30°C	27°C
Avg high / low	30° / 13°	26° / 16°
Rainfall	5 mm	6 mm
Rainy days	1	1
Humidity	59%	61%
Air quality (AQI)	34	36

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

Month by month

Napa vs Santa Barbara in September — FAQ

Is September better in Napa or Santa Barbara?: Santa Barbara is the better pick in September — 92 vs 88 on SeasonMap's comfort score. Santa Barbara is warm, dry, clean air, while Napa is hot, dry, clean air.
What is the weather like in Napa vs Santa Barbara in September?: In September, Napa averages 30°C high / 13°C low with about 5 mm of rain; Santa Barbara averages 26°C high / 16°C low with about 6 mm.