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Chamonix Sud 7-Day Snow Forecast - 21st September 2026

Chamonix Sud Snow Forecast - 7 day

ECMWF IFS
GFS

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Updated 21 September 2026 22:47 AEST

7-Day Snow Forecast for Chamonix Sud

1-week from 21 September.

For Forecast detail, see below.

Chamonix Sud 7-Day Snow Forecast Highlights

When will there be fresh snow in Chamonix Sud?

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

 
Snowfall

 
Snow Line

Max 25℃
Min 9℃

Snow unlikely

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Chamonix Sud Medium-Range (7-Day) Snow Forecast Detail

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

Max 21℃
Min 10℃

Valley temperatures from an overnight low of 10℃ to daytime highs around 21℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Mon
21

Snow unlikely

MixedCloudCloudFair

Clear spells, cloudy, fair later.

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

Max 22℃
Min 10℃

Valley temperatures from an overnight low of 10℃ to daytime highs around 22℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Tue
22

Snow unlikely

ClearClearClearClear

Clear sky.

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

Max 21℃
Min 11℃

Valley temperatures from an overnight low of 11℃ to daytime highs around 21℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Wed
23

Snow unlikely

ClearClearClearCloud

Clear sky early, then cloudy later.

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

Max 21℃
Min 9℃

Valley temperatures from an overnight low of 9℃ to daytime highs around 21℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Thu
24

Snow unlikely

ClearCloudMixedMixed

Clear sky, cloudy, clear spells later.

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

Max 23℃
Min 9℃

Valley temperatures from an overnight low of 9℃ to daytime highs around 23℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Fri
25

Snow unlikely

CloudCloudClearClear

Cloudy early, then clear sky later.

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

Max 24℃
Min 12℃

Valley temperatures from an overnight low of 12℃ to daytime highs around 24℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Sat
26

Snow unlikely

ClearClearClearClear

Clear sky.

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

Max 25℃
Min 12℃

Valley temperatures from an overnight low of 12℃ to daytime highs around 25℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Sun
27

Snow unlikely

FairClearClearMixed

Fair, clear sky, clear spells later.

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

No significant snowfall is forecast for this period.

This Snow Forecast for Chamonix Sud, France gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Chamonix Sud, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Chamonix Sud Snow Forecast updated at 22:47 AEST, next update expected 04:00 AEST.

Snow Reliability

Chamonix Sud generally sees a snow depth of around 180 cm in winter, with reliable snowfall throughout the season. For the latest snow conditions, including updates on snowmelt and depth, visit J2Ski.