What is the weather like in San Francisco vs Santa Barbara in September?

In September, San Francisco averages 22°C high / 14°C low with about 3 mm of rain; Santa Barbara averages 26°C high / 16°C low with about 6 mm.

San Francisco vs Santa Barbara in September

San Francisco is the better pick in September — 96 vs 92 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Santa Barbara is warm, dry, clean air.

San Francisco vs Santa Barbara — September climate, side by side

	🇺🇸 San Francisco	🇺🇸 Santa Barbara
Comfort score	96/100 (S)	92/100 (S)
Feels-like high	21°C	27°C
Avg high / low	22° / 14°	26° / 16°
Rainfall	3 mm	6 mm
Rainy days	1	1
Humidity	75%	61%
Air quality (AQI)	35	36

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

Month by month

San Francisco vs Santa Barbara in September — FAQ

Is September better in San Francisco or Santa Barbara?: San Francisco is the better pick in September — 96 vs 92 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Santa Barbara is warm, dry, clean air.
What is the weather like in San Francisco vs Santa Barbara in September?: In September, San Francisco averages 22°C high / 14°C low with about 3 mm of rain; Santa Barbara averages 26°C high / 16°C low with about 6 mm.