Year-round weather and climate in Chamonix-Mont-Blanc, France
Average temperatures in Chamonix-Mont-Blanc run from an average low of -5°C23°F in January up to an average high of 24°C75°F in August. February is the driest month at 8 rainy days; May the wettest at 21. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 11K
- Currency
- EUR
- Language
- French
- Time zone
- Paris
Best time to visit
The most pleasant weather falls in June, July, and August, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable 11°C20°F when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
Deep Continental: Dominated by long, freezing winters. Summers are brief but pleasantly mild.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Chamonix-Mont-Blanc, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Feb is typically driest at 8 days (54mm); May the wettest at 21 days (170mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 5°C / 41°F | -5°C / 23°F | 6h | 14 | 171mm |
| Feb | 7°C / 45°F | -3°C / 26°F | 8h | 8 | 54mm |
| Mar | 9°C / 48°F | -2°C / 29°F | 8h | 14 | 143mm |
| Apr | 12°C / 53°F | 1°C / 34°F | 10h | 15 | 154mm |
| May | 16°C / 60°F | 6°C / 42°F | 10h | 21 | 170mm |
| Jun | 22°C / 71°F | 11°C / 51°F | 13h | 15 | 131mm |
| Jul | 23°C / 73°F | 12°C / 54°F | 13h | 14 | 140mm |
| Aug | 24°C / 75°F | 13°C / 55°F | 12h | 10 | 79mm |
| Sep | 19°C / 66°F | 9°C / 48°F | 9h | 14 | 177mm |
| Oct | 16°C / 60°F | 6°C / 43°F | 8h | 13 | 182mm |
| Nov | 9°C / 48°F | -1°C / 31°F | 6h | 14 | 222mm |
| Dec | 6°C / 43°F | -3°C / 27°F | 6h | 11 | 162mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Chamonix-Mont-Blanc?
The most sunshine in Chamonix-Mont-Blanc comes around July, averaging 13 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Chamonix-Mont-Blanc?
Your packing list depends entirely on when you travel. Temperatures in Chamonix-Mont-Blanc swing from an average low of -5°C23°F in January up to 24°C75°F in August. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Chamonix-Mont-Blanc?
Chamonix-Mont-Blanc gets rain on about 163 days out of the year. The wettest month is May. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Chamonix-Mont-Blanc with Packola.
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