What is the weather like in Big Sur vs Half Moon Bay in September?

In September, Big Sur averages 27°C high / 13°C low with about 5 mm of rain; Half Moon Bay averages 22°C high / 13°C low with about 12 mm.

Big Sur vs Half Moon Bay in September

Big Sur and Half Moon Bay are nearly tied in September — 87 vs 87 on SeasonMap's comfort score. Big Sur is warm, dry, clean air; Half Moon Bay is nice, dry, clean air.

Big Sur vs Half Moon Bay — September climate, side by side

	🇺🇸 Big Sur	🇺🇸 Half Moon Bay
Comfort score	87/100 (A)	87/100 (A)
Feels-like high	28°C	22°C
Avg high / low	27° / 13°	22° / 13°
Rainfall	5 mm	12 mm
Rainy days	1	3
Humidity	72%	83%
Air quality (AQI)	33	43

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

Month by month

Big Sur vs Half Moon Bay in September — FAQ

Is September better in Big Sur or Half Moon Bay?: Big Sur and Half Moon Bay are nearly tied in September — 87 vs 87 on SeasonMap's comfort score. Big Sur is warm, dry, clean air; Half Moon Bay is nice, dry, clean air.
What is the weather like in Big Sur vs Half Moon Bay in September?: In September, Big Sur averages 27°C high / 13°C low with about 5 mm of rain; Half Moon Bay averages 22°C high / 13°C low with about 12 mm.