Chamonix, FranceQuick decision
When to visit Chamonix?
🌞 Best time overall
August
🌡️ Optimal temperature
13°C–24°C in August
🌧 Least rain
39% rainy days in August
🌧 Wettest month
January (45%)
📅 Best score
7.9/10
By trip type
Best time by type of trip
Skiing & MountaineeringDecember–April — Grands Montets, Vallée Blanche and Mont Blanc.
Hiking & TMBJune–September — Tour du Mont-Blanc, Lac Blanc and Mer de Glace.
Aiguille du MidiMay–October — 360° Alpine panorama, Step into the Void.
FamilyJuly–August — accessible hikes, summer luge and Merlet park.
Monthly climate data
Chamonix weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score | Ski score 🎿 |
|---|---|---|---|---|---|---|---|
| 🌨️ January | -4°C | 4°C | 45% | 6.0 | 7.3h | 2.9/10 | 7.5/10 |
| 🌦️ February | -2°C | 7°C | 41% | 4.5 | 9.0h | 4.1/10 | 7.2/10 |
| 🌦️ March | -1°C | 8°C | 45% | 4.8 | 10.4h | 4.2/10 | 7.0/10 |
| 🌦️ April | 2°C | 13°C | 48% | 4.4 | 12.0h | 5.5/10 | 5.5/10 |
| 🌦️ May | 6°C | 16°C | 61% | 6.2 | 12.7h | 6.1/10 | 4.4/10 |
| 🌦️ June | 10°C | 21°C | 57% | 4.7 | 13.6h | 7.3/10 | 4.0/10 |
| 🌤️ July | 13°C | 23°C | 45% | 3.9 | 14.1h | 7.8/10 | 4.1/10 |
| 🌤️ August | 13°C | 24°C | 39% | 3.4 | 13.0h | 7.9/10 | 4.1/10 |
| 🌦️ September | 10°C | 18°C | 46% | 4.1 | 11.0h | 7.0/10 | 4.3/10 |
| ⛅ October | 6°C | 15°C | 37% | 4.2 | 9.7h | 6.4/10 | 4.6/10 |
| 🌦️ November | 0°C | 8°C | 45% | 5.4 | 7.9h | 4.0/10 | 6.5/10 |
| 🌦️ December | -3°C | 6°C | 43% | 6.2 | 7.4h | 3.5/10 | 7.1/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Challenging climate
Average 12°C, 51% rainy days, 11.7h sunshine/day. Score: 5.3/10.
☀️ Summer (Jun–Aug) — Good time
Average 23°C, 47% rainy days, 13.6h sunshine/day. Score: 7.7/10.
🍂 Autumn (Sep–Nov) — Acceptable
Average 14°C, 43% rainy days, 9.5h sunshine/day. Score: 5.8/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 6°C, 43% rainy days, 7.9h sunshine/day. Score: 3.5/10.
Accommodation
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Tip : off-peak months (January, February) are cheapest but weather is significantly worse.
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Activities and tours in Chamonix
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
It depends on the activity. For skiing: January (ski score 7.5/10). For hiking/summer: August (7.9/10, 24°C).
Yes, it's peak ski season. Average ski score December–February: 7.3/10. Cold temperatures (4°C max in January) and frequent snowfall.
In August, temperatures average 24°C. Ideal for hiking and outdoor activities.
January is the wettest month with 45% rainy days.
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