What is the weather like in Big Sur vs San Diego in September?

In September, Big Sur averages 27°C high / 13°C low with about 5 mm of rain; San Diego averages 26°C high / 19°C low with about 6 mm.

Big Sur vs San Diego in September

San Diego is the better pick in September — 91 vs 87 on SeasonMap's comfort score. San Diego is warm, dry, muggy air, while Big Sur is warm, dry, clean air.

Big Sur vs San Diego — September climate, side by side

	🇺🇸 Big Sur	🇺🇸 San Diego
Comfort score	87/100 (A)	91/100 (S)
Feels-like high	28°C	27°C
Avg high / low	27° / 13°	26° / 19°
Rainfall	5 mm	6 mm
Rainy days	1	1
Humidity	72%	77%
Air quality (AQI)	33	53

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

Month by month

Big Sur 🇺🇸 United Stateswarm, dry, clean air · best August87
San Diego 🇺🇸 United Stateswarm, dry, muggy air · best August91

Big Sur vs San Diego in September — FAQ

Is September better in Big Sur or San Diego?: San Diego is the better pick in September — 91 vs 87 on SeasonMap's comfort score. San Diego is warm, dry, muggy air, while Big Sur is warm, dry, clean air.
What is the weather like in Big Sur vs San Diego in September?: In September, Big Sur averages 27°C high / 13°C low with about 5 mm of rain; San Diego averages 26°C high / 19°C low with about 6 mm.