What is the weather like in Los Angeles vs San Francisco in September?

In September, Los Angeles averages 30°C high / 19°C low with about 5 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.

Los Angeles vs San Francisco in September

San Francisco is the better pick in September — 96 vs 86 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Los Angeles is hot, dry.

Los Angeles vs San Francisco — September climate, side by side

	🇺🇸 Los Angeles	🇺🇸 San Francisco
Comfort score	86/100 (A)	96/100 (S)
Feels-like high	31°C	21°C
Avg high / low	30° / 19°	22° / 14°
Rainfall	5 mm	3 mm
Rainy days	1	1
Humidity	56%	75%
Air quality (AQI)	59	35

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

Month by month

Los Angeles vs San Francisco in September — FAQ

Is September better in Los Angeles or San Francisco?: San Francisco is the better pick in September — 96 vs 86 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Los Angeles is hot, dry.
What is the weather like in Los Angeles vs San Francisco in September?: In September, Los Angeles averages 30°C high / 19°C low with about 5 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.