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

In September, Chamonix averages 19°C high / 10°C low with about 130 mm of rain; Courmayeur averages 18°C high / 10°C low with about 81 mm.

Chamonix vs Courmayeur in September

Chamonix and Courmayeur are nearly tied in September — 21 vs 22 on SeasonMap's comfort score. Chamonix is nice, rainy, clean air; Courmayeur is nice, rainy, clean air.

Chamonix vs Courmayeur — September climate, side by side

	🇫🇷 Chamonix	🇮🇹 Courmayeur
Comfort score	21/100 (F)	22/100 (F)
Feels-like high	19°C	18°C
Avg high / low	19° / 10°	18° / 10°
Rainfall	130 mm	81 mm
Rainy days	16	13
Humidity	82%	79%
Air quality (AQI)	37	38

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

Month by month

Chamonix vs Courmayeur in September — FAQ

Is September better in Chamonix or Courmayeur?: Chamonix and Courmayeur are nearly tied in September — 21 vs 22 on SeasonMap's comfort score. Chamonix is nice, rainy, clean air; Courmayeur is nice, rainy, clean air.
What is the weather like in Chamonix vs Courmayeur in September?: In September, Chamonix averages 19°C high / 10°C low with about 130 mm of rain; Courmayeur averages 18°C high / 10°C low with about 81 mm.