ChamonixPhoto: Alain Bourque · CC BY 3.0France · Europe
Best time to visit Chamonix
Chamonix sits below Mont Blanc, the Alps' highest peak: skiing, mountaineering and glaciers. Cool all year.
Climate decision
Best travel months for Chamonix
Top recommendation
Next highest scores
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
March · Mean daily maximum
3.4 °C
1991–2025: 1.3 °C
+2.1 °C · higher
August · Wet days
10.8 days/month
1991–2025: 13.7 days/month
-2.9 days/month · lower
February · Monthly precipitation
49.2 mm/month
1991–2025: 76.2 mm/month
-26.9 mm/month · lower
August: 0/155 days at or above 30 °C; highest single value 28.6 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Seasonal contrast
Chamonix: temperature opens and closes the travel window
Average daily highs span 20.4 °C across the year. This marked contrast shapes the choice of month more than small differences in rain or sunshine.
The key decision
Choose the suitable temperature range first. Within that window, dryness and sunshine identify the stronger month.
Lowest average daily low
January · -10.6 °C
Highest average daily high
August · 18.2 °C
Fewest rainy days
February · 10.9
Most sunshine
June · 7.5 h
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| January | -2 | -11 | 12 | 100 | 1.8 | 85 | 1.0 | 29 |
| February | -2 | -10 | 11 | 76 | 2.8 | 86 | 1.0 | 34 |
| March | 1 | -7 | 13 | 85 | 4.2 | 86 | 1.0 | 32 |
| April | 7 | -2 | 13 | 80 | 5.5 | 80 | 0.9 | 35 |
| May | 12 | 2 | 18 | 110 | 6.4 | 78 | 0.8 | 36 |
| June | 16 | 6 | 17 | 106 | 7.5 | 77 | 0.8 | 50 |
| July | 18 | 8 | 15 | 102 | 7.5 | 75 | 0.8 | 59 |
| August | 18 | 8 | 14 | 94 | 6.5 | 73 | 0.8 | 64 |
| September | 14 | 4 | 13 | 92 | 5.0 | 77 | 0.7 | 50 |
| October | 10 | 1 | 13 | 95 | 3.2 | 79 | 0.8 | 38 |
| November | 3 | -5 | 14 | 102 | 1.8 | 84 | 0.8 | 27 |
| December | -1 | -9 | 14 | 116 | 1.4 | 84 | 0.9 | 26 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
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Where to stay in Chamonix
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Useful next decisions
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Similar destinations
The number is the overall climate score, not a similarity score.
Frequently asked questions
When is the best time to visit Chamonix?
The strongest climate months are August. Values are historical averages, not a forecast.
Which month has the highest average daily maximum temperature in Chamonix?
The average daily maximum temperature in Chamonix is highest in August at around 18 °C.