Mountain town in Auvergne-Rhône-Alpes, France
Chamonix weather by month and the best time to visit
When to go to Chamonix
Jun–Sep for hiking, UTMB week in late Aug is booked solid. Dec–Mar for skiing; spring and late autumn are quiet and many shops close.
Chamonix weather by month
Average daily high, rainfall and conditions.
- Jan2°107 mm
- Feb2°77 mm
- Mar6°94 mm
- Apr12°74 mm
- May16°117 mm
- Jun21°105 mm
- Jul22°103 mm
- Aug22°105 mm
- Sep18°76 mm
- Oct14°86 mm
- Nov8°94 mm
- Dec3°110 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 2°C35°F | -6°C20°F | 107 mm | 86% | Freezing |
| February | 2°C36°F | -6°C20°F | 77 mm | 87% | Freezing |
| March | 6°C42°F | -2°C28°F | 94 mm | 86% | Cold |
| April | 12°C53°F | 2°C36°F | 74 mm | 80% | Cool |
| May | 16°C61°F | 6°C44°F | 117 mm | 79% | Cool |
| June | 21°C69°F | 11°C52°F | 105 mm | 77% | Pleasant |
| July | 22°C72°F | 12°C54°F | 103 mm | 75% | Pleasant |
| August | 22°C72°F | 12°C54°F | 105 mm | 74% | Pleasant |
| September | 18°C65°F | 8°C47°F | 76 mm | 77% | Pleasant |
| October | 14°C58°F | 5°C40°F | 86 mm | 78% | Cool |
| November | 8°C46°F | 0°C31°F | 94 mm | 84% | Cold |
| December | 3°C38°F | -4°C24°F | 110 mm | 84% | Cold |
Best months across France
| Place | Best months | Warmest month |
|---|---|---|
| Paris | Apr–Jun, Sep–Oct | Jul (25°C) |
| Nice | May–Jun, Sep–Oct | Aug (26°C) |
| Provence | May–Jun, Sep–Oct | Jul (32°C) |
| French Riviera | May–Jun, Sep–Oct | Aug (26°C) |
| Lyon | Apr–Jun, Sep–Oct | Jul (28°C) |
| Marseille | Apr–Jun, Sep–Oct | Jul (33°C) |
| Bordeaux | May–Jun, Sep–Oct | Aug (28°C) |
| Cannes | May–Jun, Sep–Oct | Jul (30°C) |
| Strasbourg | May–Jun, Sep–Oct, Dec | Jul (27°C) |
| Chamonix | Jun–Sep, Dec–Mar | Jul (22°C) |
| Annecy | May–Jul, Sep | Jul (26°C) |
| Corsica | May–Jun, Sep–Oct | Aug (30°C) |
| Aix-en-Provence | Apr–Jun, Sep–Oct | Jul (32°C) |
| Toulouse | Apr–Jun, Sep–Oct | Jul (30°C) |
| Loire Valley | May–Jun, Sep–Oct | Jul (27°C) |
| Normandy | May–Jul, Sep | Jul (23°C) |
| Montpellier | Apr–Jun, Sep–Oct | Jul (30°C) |
| Avignon | Apr–Jun, Sep–Oct | Jul (33°C) |
| Biarritz | May–Jun, Sep–Oct | Aug (27°C) |
| Colmar | May–Jun, Sep–Oct | Jul (27°C) |
| Saint-Tropez | May–Jun, Sep | Jul (30°C) |
| Antibes | May–Jun, Sep–Oct | Jul (30°C) |
| Nantes | May–Sep | Jul (25°C) |
| Lille | May–Sep | Jul (23°C) |
| Carcassonne | Apr–Jun, Sep–Oct | Jul (31°C) |
| Brittany | Jun–Sep | Jul (24°C) |
| Dordogne | May–Jun, Sep–Oct | Aug (28°C) |
Quick answers
What is the best month to visit Chamonix?
Jun–Sep, Dec–Mar. Jun–Sep for hiking, UTMB week in late Aug is booked solid. Dec–Mar for skiing; spring and late autumn are quiet and many shops close.
When is the rainy season in Chamonix?
Rain peaks in May with about 117 mm. No month averages 150 mm or more.
What is the hottest month in Chamonix?
July, with average highs of 22°C (72°F).
How cold does Chamonix get?
The coolest nights are in February, averaging -6°C (20°F).
More about Chamonix
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Sources
- NASA POWER climatology (2001–2020)
- Chamonix tourist office
- Compagnie du Mont-Blanc (lifts)
- SNCF Connect (Mont Blanc Express)
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 4.4°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.