What is the weather like in Chamonix vs Zermatt in September?

In September, Chamonix averages 19°C high / 10°C low with about 130 mm of rain; Zermatt averages 17°C high / 7°C low with about 142 mm.

Chamonix vs Zermatt in September

Zermatt is the better pick in September — 27 vs 21 on SeasonMap's comfort score. Zermatt is nice, rainy, clean air, while Chamonix is nice, rainy, clean air.

Chamonix vs Zermatt — September climate, side by side

	🇫🇷 Chamonix	🇨🇭 Zermatt
Comfort score	21/100 (F)	27/100 (F)
Feels-like high	19°C	17°C
Avg high / low	19° / 10°	17° / 7°
Rainfall	130 mm	142 mm
Rainy days	16	18
Humidity	82%	82%
Air quality (AQI)	37	37

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

Month by month

Chamonix 🇫🇷 Francenice, rainy, clean air · best January21
Zermatt 🇨🇭 Switzerlandnice, rainy, clean air · best January27

Chamonix vs Zermatt in September — FAQ

Is September better in Chamonix or Zermatt?: Zermatt is the better pick in September — 27 vs 21 on SeasonMap's comfort score. Zermatt is nice, rainy, clean air, while Chamonix is nice, rainy, clean air.
What is the weather like in Chamonix vs Zermatt in September?: In September, Chamonix averages 19°C high / 10°C low with about 130 mm of rain; Zermatt averages 17°C high / 7°C low with about 142 mm.