Outdoor activities Potential
Good
Based on optimal climate
Seasonality
August, July, June
Avoid (Extreme Weather)
Weather
Avg Temp Range
Precipitation
Seasonal (check heatmap)
Good For
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🥾 Planning a hiking trip to Chamonix-Mont-Blanc?
The best time to visit Chamonix-Mont-Blanc for hiking is August, July, June, when trail conditions are most favorable and the weather is more stable.
Climate Heatmap
See at a glance which months offer the best outdoor activities conditions — based on temperature, rainfall and climate scores.
Summer offers the most reliable hiking conditions in Chamonix-Mont-Blanc, with open trails and longer daylight hours.
→ See where to stay in Chamonix-Mont-BlancOutdoor activities conditions breakdown
Monthly weather & climate data for Chamonix-Mont-Blanc
| Month | Climate Score | Predictability | Avg Temp | Rain (mm) |
|---|---|---|---|---|
January | 30Poor Cool temperatures. High rain conditions. | Predictability 85Weather conditions are fairly consistent throughout the year. | -4° | 121 |
February | 34Poor Cool temperatures. Some rain conditions. | Predictability 85Weather conditions are fairly consistent throughout the year. | -4° | 93 |
March | 32Poor Cool temperatures. High rain conditions. | Predictability 85Weather conditions are fairly consistent throughout the year. | -1° | 105 |
April | 26Poor Cool temperatures. High rain conditions. | Predictability 78Weather conditions vary somewhat by season. | 2° | 142 |
May | 26Poor Cool temperatures. High rain conditions. | Predictability 70Weather conditions vary somewhat by season. | 7° | 159 |
June | 54Suboptimal Cool temperatures. High rain conditions. | Predictability 78Weather conditions vary somewhat by season. | 10° | 141 |
July | 69Suboptimal Cool temperatures. High rain conditions. | Predictability 78Weather conditions vary somewhat by season. | 12° | 161 |
August | 70Good Cool temperatures. High rain conditions. | Predictability 85Weather conditions are fairly consistent throughout the year. | 12° | 152 |
September | 48Poor Cool temperatures. High rain conditions. | Predictability 78Weather conditions vary somewhat by season. | 9° | 137 |
October | 28Poor Cool temperatures. High rain conditions. | Predictability 78Weather conditions vary somewhat by season. | 5° | 135 |
November | 25Poor Cool temperatures. High rain conditions. | Predictability 78Weather conditions vary somewhat by season. | 0° | 148 |
December | 28Poor Cool temperatures. High rain conditions. | Predictability 85Weather conditions are fairly consistent throughout the year. | -3° | 139 |
Source: Historical climate averages (30-year observation).
Quick summary: visiting Chamonix-Mont-Blanc
When is the best time to visit Chamonix-Mont-Blanc for outdoor activities?
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When is the rainy season in Chamonix-Mont-Blanc?
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Plan your hiking trip to Chamonix-Mont-Blanc
Now you know the best time to visit Chamonix-Mont-Blanc for hiking — here are the essential next steps to plan your trip.
Where to stay
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Find top stays near hiking areasHiking & Tours
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