What is the weather like in Big Sur vs Mammoth Lakes in September?

In September, Big Sur averages 27°C high / 13°C low with about 5 mm of rain; Mammoth Lakes averages 22°C high / 3°C low with about 13 mm.

Big Sur vs Mammoth Lakes in September

Big Sur is the better pick in September — 87 vs 19 on SeasonMap's comfort score. Big Sur is warm, dry, clean air, while Mammoth Lakes is nice, dry, clean air.

Big Sur vs Mammoth Lakes — September climate, side by side

	🇺🇸 Big Sur	🇺🇸 Mammoth Lakes
Comfort score	87/100 (A)	19/100 (F)
Feels-like high	28°C	20°C
Avg high / low	27° / 13°	22° / 3°
Rainfall	5 mm	13 mm
Rainy days	1	4
Humidity	72%	47%
Air quality (AQI)	33	42

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

Month by month

Big Sur vs Mammoth Lakes in September — FAQ

Is September better in Big Sur or Mammoth Lakes?: Big Sur is the better pick in September — 87 vs 19 on SeasonMap's comfort score. Big Sur is warm, dry, clean air, while Mammoth Lakes is nice, dry, clean air.
What is the weather like in Big Sur vs Mammoth Lakes in September?: In September, Big Sur averages 27°C high / 13°C low with about 5 mm of rain; Mammoth Lakes averages 22°C high / 3°C low with about 13 mm.