Weather in Chamonix in September
Chamonix, France averages a high of 17.9°C (64.2°F) and low of 8.5°C (47.3°F) in September, with 14 rain days and 9.3 hours of daily sunshine. Travel score: 65.4/100 (Good). The best time to visit Chamonix is August.
High
18°C64°F
Low
9°C47°F
🌧️
14
rain days
☀️
9.3
hrs/day sunshine
💧
81%
humidity
65— Good
September in Chamonix is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Chamonix?
How much does it rain in Chamonix in September?
Chamonix receives an average of 118.9mm of rainfall across 14 rainy days in September. The annual total is 1742.6mm.
What should I pack for Chamonix in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧥
Light rain jacket
Some rainy days expected (14 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to France in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31