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Weather in Chamonix-Mont-Blanc for December 2025

Your guide to Chamonix-Mont-Blanc weather in December - trends and predictions

    Snow Forecast ❄️

  • Expect heavy snowfall in Chamonix-Mont-Blanc during December, with an average of 18 snowy days.

    • Temperatures

  • In general, the average temperature in Chamonix-Mont-Blanc at the beginning of December is -1.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 2 °C by the end of December.

    • More

  • Is December a good time to visit Chamonix-Mont-Blanc? check out the best time to travel to Chamonix-Mont-Blanc page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
9
Dry days
Average rainy days
4
Rainy days
Average snowy days
18
Snow days
Average temperatures
0°/-7°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Chamonix-Mont-Blanc Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy sleet
2°
2
Moderate or heavy snow showers
0°
3
Sunny
-3°
4
Heavy snow
-4°
5
Heavy snow
-2°
6
Light freezing rain
-2°
7
Sunny
1°
8
Heavy snow
-2°
9
Light freezing rain
-1°
10
Moderate or heavy snow showers
-1°
11
Moderate or heavy rain with thunder
-0°
12
Moderate rain
0°
13
Moderate or heavy snow with thunder
-1°
14
Moderate or heavy snow showers
-2°
15
Light snow showers
-3°
16
Sunny
2°
17
Sunny
3°
18
Sunny
3°
19
Sunny
2°
20
Moderate snow
-3°
21
Light sleet
-1°
22
Heavy snow
-1°
23
Mist
-3°
24
Sunny
-2°
25
Mist
2°
26
Partly cloudy
2°
27
Sunny
3°
28
Light freezing rain
2°
29
Partly cloudy
2°
30
Partly cloudy
2°
31
Heavy snow
1°

Temperatures trend during December in Chamonix-Mont-Blanc

See the weather trend as well as the moving average line

December weather in Chamonix-Mont-Blanc day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Moderate or heavy sleet
Moderate or heavy sleet
 2° /-4° 21.5 mm 3.7 cm
2 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-9° 9.8 mm 6.1 cm
3 Dec. Sunny
Sunny
 -3° /-14° 3.3 mm 0.5 cm
4 Dec. Heavy snow
Heavy snow
 -4° /-11° 2.3 mm 1.8 cm
5 Dec. Heavy snow
Heavy snow
 -2° /-13° 2.8 mm 2.3 cm
6 Dec. Light freezing rain
Light freezing rain
 -2° /-11° 10.6 mm 0 cm
7 Dec. Sunny
Sunny
 1° /-10° 10.1 mm 3.3 cm
8 Dec. Heavy snow
Heavy snow
 -2° /-9° 3.2 mm 2.1 cm
9 Dec. Light freezing rain
Light freezing rain
 -1° /-10° 13.7 mm 0.2 cm
10 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -1° /-7° 4.9 mm 0.2 cm
11 Dec. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 0° /-6° 37.4 mm 0 cm
12 Dec. Moderate rain
Moderate rain
 0° /-5° 21 mm 0 cm
13 Dec. Moderate or heavy snow with thunder
Moderate or heavy snow with thunder
 -1° /-7° 11.1 mm 4.2 cm
14 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -2° /-7° 5.4 mm 4.4 cm
15 Dec. Light snow showers
Light snow showers
 -3° /-11° 1 mm 0.7 cm
16 Dec. Sunny
Sunny
 2° /-8° 0 mm 0 cm
17 Dec. Sunny
Sunny
 3° /-2° 0 mm 0 cm
18 Dec. Sunny
Sunny
 3° /-1° 0 mm 0 cm
19 Dec. Sunny
Sunny
 2° /-4° 15.1 mm 2.5 cm
20 Dec. Moderate snow
Moderate snow
 -3° /-9° 5.9 mm 3.6 cm
21 Dec. Light sleet
Light sleet
 -1° /-11° 6.1 mm 0 cm
22 Dec. Heavy snow
Heavy snow
 -1° /-6° 39.3 mm 16.7 cm
23 Dec. Mist
Mist
 -3° /-9° 14.4 mm 10.4 cm
24 Dec. Sunny
Sunny
 -2° /-11° 0.3 mm 0.2 cm
25 Dec. Mist
Mist
 2° /-6° 0 mm 0 cm
26 Dec. Partly cloudy
Partly cloudy
 2° /-4° 0 mm 0 cm
27 Dec. Sunny
Sunny
 3° /-3° 0 mm 0 cm
28 Dec. Light freezing rain
Light freezing rain
 2° /-3° 0 mm 0 cm
29 Dec. Partly cloudy
Partly cloudy
 2° /-4° 0 mm 0 cm
30 Dec. Partly cloudy
Partly cloudy
 2° /-4° 0 mm 0 cm
31 Dec. Heavy snow
Heavy snow
 1° /-6° 4.8 mm 3.6 cm
Next
Important Notice
Our weather forecast for Chamonix-Mont-Blanc in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chamonix-Mont-Blanc forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Chamonix-Mont-Blanc weather in December vs November vs January

Compare December weather in Chamonix-Mont-Blanc with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
NovemberDecemberJanuary
WeatherModerate snow
Moderate snow
Moderate snow
Moderate snow
Moderate snow
Moderate snow
Temperatures2°/-4°0°/-7°0°/-7°
Rainfall273 mm244 mm227 mm
Snowfall65 cm66 cm65 cm
Wind10.4 km/h9.8 km/h11 km/h
Humidity79%78%80%
Rainy days5 days4 days1 days
Snow days20 days18 days20 days
Dry days5 days9 days10 days

Planning a trip to Chamonix-Mont-Blanc? Discover the best time to visit

Chamonix-Mont-Blanc in December - FAQ

What are the expected maximum and minimum temperatures in Chamonix-Mont-Blanc during December?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Chamonix-Mont-Blanc during December?
Significant rainfall exceeding 243.9 mm is expected in Chamonix-Mont-Blanc during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Chamonix-Mont-Blanc in December 2025?
Chamonix-Mont-Blanc experiences an average snowfall of 66.49 cm during December, occurring over 18 days.
What are the typical wind conditions in Chamonix-Mont-Blanc during December?
The average wind speed in Chamonix-Mont-Blanc during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Chamonix-Mont-Blanc in December?

As you prepare for your trip to Chamonix-Mont-Blanc in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Chamonix-Mont-Blanc, during December, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
    • Thermal Wear: Base layers for cold destinations
    • All-Weather Jacket: Waterproof and breathable
  • Footwear
    • Waterproof Shoes
    • Insulated Boots: For snowy and extremely cold temperatures
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

Chamonix-Mont-Blanc snow forecast December 2025

Track daily snowfall levels and discover Chamonix-Mont-Blanc’s snowy potential this December ❄️

December rainfall patterns in Chamonix-Mont-Blanc

Explore the daily rainfall trends and prepare for Chamonix-Mont-Blancs December weather 💧

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Location coordinates Where is Chamonix-Mont-Blanc?

Get accurate weather forecasts for Chamonix-Mont-Blanc, located at latitude 45.924 and longitude 6.869. Stay updated with localized weather information tailored for Chamonix-Mont-Blanc.

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