Chamonix Sud 7-Day Snow Forecast

Chamonix Sud Long-Range Snow Forecast Updated today

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Updated 10 October 2026 18:48 PDT

Long-Range Snow Forecast for Chamonix Sud

Long-range (14 to 45 days) from 11 October.

For Forecast detail, see below.

Chamonix Sud Snow Forecast Highlights

When will there be fresh snow in Chamonix Sud?

Chamonix Sud Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (8,005ft)
Next Snow?
There is no snow currently in the forecast for Chamonix Sud.
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Long-range Snow Outlook for Chamonix Sud

Snowfall

Snow Line

Max 71°F
Min 40°F

1in New Snow

Snow Line from 10,581ft to 6,289ft, with rain below.

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Chamonix Sud Long-Range (2 weeks+) Snow Forecast Outlook

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.

16 Day Weather and Snow Forecast for Chamonix Sud from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sun 11	New Snow Cloudy. Snow Line from 6,946ft to 6,289ft, with rain below.	Max 55°F Min 45°F
Mon 12	Clear sky.	Max 61°F Min 40°F
Tue 13	Clear sky.	Max 64°F Min 44°F
Wed 14	Clear sky.	Max 67°F Min 46°F
Thu 15	Clear sky.	Max 71°F Min 47°F
Fri 16	Clear sky.	Max 68°F Min 47°F
Sat 17	New Snow Fair. Snow Line from 10,581ft to 8,209ft, with rain below.	Max 60°F Min 44°F

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 18:48 PDT, next update expected 00:00 PDT.

Long-range ensemble forecasts for Chamonix Sud will be available shortly.

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

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Snow Forecast near Chamonix Sud

Snow Forecasts for Ski Resorts near Chamonix Sud
Ski Area	48 Hr	7 Day
Chamonix	-	1in
Flaine	-	-
La Flégère	-	-

How reliable is the snow in Chamonix Sud?

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.

Off-Piste Safety in Chamonix Sud

Before skiing or snowboarding off-piste in Chamonix Sud, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.