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Chamonix Snow Forecast - 20th August 2026

Chamonix Snow Report and Forecast

ECMWF IFS
GFS
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Updated 20 August 2026 18:46 NZST

Snow Forecast for Chamonix

Snow and Weather from 20 August.

For Forecast detail, see below.

Chamonix Snow Forecast Highlights

When will there be fresh snow in Chamonix?

Chamonix Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (2,440m)
Next Snow?
There is no snow currently in the forecast for Chamonix.
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Forecast for today in Chamonix

Max 24℃
Min 16℃

Valley temperatures from an overnight low of 16℃ to daytime highs around 24℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Thu
20

up to 4cm New Snow

Lt DrizzleShwrsShwrsDrizzle

Light drizzle, rain showers, drizzle later.

Snow Line from 3,399m to 3,245m, with rain below.

Forecast times for Chamonix are in Paris (Europe/Paris) time zone.

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Chamonix 7-Day Snow Forecast Overview

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Summary Weather and Snow Forecast for Chamonix from OpenMeteo(ECMWF IFS)
Thu
20
Fri
21
Sat
22
Sun
23
Mon
24
Tue
25
Wed
26
Wind
3,840m
4℃
Light Snow
+4cm
-1℃
Snow
+16cm
0℃
Fair
+1cm
4℃
Clear
7℃
Lt Drizzle
5℃
Light Snow
+1cm
8℃
Fair
2,435m
13℃
Lt Drizzle
8℃
Snow
9℃
Fair
13℃
Clear
16℃
Lt Drizzle
14℃
Lt Drizzle
17℃
Fair
1,030m
24℃
Lt Drizzle
16℃
Drizzle
18℃
Fair
22℃
Clear
26℃
Fair
23℃
Lt Drizzle
26℃
Fair
Snow Line

varying 3,399m
to 3,245m

varying 3,199m
to 2,568m

varying 2,553m
to 2,261m

varying 3,399m
to 3,168m

Max Town24℃16℃18℃22℃26℃23℃26℃
Min Town16℃12℃10℃8℃12℃14℃14℃

This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.

Snow Forecast near Chamonix

Snow Forecasts for Ski Resorts near Chamonix
Ski Area 48 Hr 7 DayThFrSaSuMoTuWe
Ski Pass Mont Blanc29cm 32cm
Chamonix Sud21cm 21cm
Argentière5cm 5cm

Snow Reliability

Chamonix typically enjoys reliable snowfall, with an average snow depth of 80-200 cm throughout the season. For the latest snow conditions, be sure to check J2Ski for up-to-date information.

Understanding and predicting Snow Conditions in Chamonix

Here are our tips for making the most of a trip to Chamonix, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Chamonix, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.

Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:

Pistes (Groomers) or Off-Piste

These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.

  • Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
  • Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.

WARNING - skiing off-piste (out-of-bounds) at Chamonix is uncontrolled and un-marked slopes are not made safe (from avalanche risk) or patrolled. Always check local advice, know the Avalanche Risk Level, ski with safety kit (and know how to use it), and never ski alone.

Analyzing Weather and Snowfall Forecasts

Whilst no forecast can tell you exactly how snow conditions in Chamonix will develop, checking the forecast regularly should give you an idea of what to expect.

New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.

Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.

Predicting Future Snow Quality

Regularly check our snow and weather forecasts for Chamonix for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.

Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.