Chamonix Sud 7-Day Snow Forecast

Chamonix Sud Long-Range Snow Forecast Updated today

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Updated 21 October 2026 13:54 BST

Long-Range Snow Forecast for Chamonix Sud

Long-range (14 to 45 days) from 21 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 (2,440m)
Next Snow Expected	21 October
Next Snow Amount	13cm 5in
Next 48 Hours	27cm 11in
Next 7 Days	39cm 15in
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Long-range Snow Outlook for Chamonix Sud

Snowfall

Snow Line

Max 19℃ 67°F
Min -1℃ 31°F

59cm 23in New Snow

Snow Line from 2,348m 7,703ft to resort level ( 1,040m 3,412ft ).

Powder Alert!

Powder Alarm issued 21 October 2026 20:44 BST

Powder Possible :- 27cm 11in of Fresh Snow is forecast for Chamonix Sud over the next 2 days.

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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
Wed 21	up to 20cm up to 8in New Snow Snow showers at altitude, rain showers below. Snow Line from 2,348m 7,703ft to 1,409m 4,623ft , with rain below.	Max 10℃ 50°F Min 4℃ 39°F
Thu 22	Fog at altitude, fair below.	Max 11℃ 53°F Min -1℃ 31°F
Fri 23	up to 14cm up to 5in New Snow Snow showers at altitude, rain showers below. Snow Line from 2,348m 7,703ft to 1,286m 4,219ft , with rain below.	Max 10℃ 50°F Min 1℃ 34°F
Sat 24	up to 6cm up to 2in New Snow Snow showers at altitude, light rain below. Snow Line from 1,625m 5,331ft to resort level ( 1,040m 3,412ft ).	Max 6℃ 43°F Min 0℃ 33°F
Sun 25	up to 20cm up to 8in New Snow Light snow. Snow Line from 2,271m 7,451ft to resort level ( 1,040m 3,412ft ).	Max 10℃ 49°F Min 1℃ 34°F
Mon 26	Clear sky.	Max 15℃ 59°F Min 2℃ 35°F
Tue 27	Clear sky.	Max 19℃ 67°F Min 6℃ 43°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 piste 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 13:54 BST, next update expected imminently.

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.

France Accommodation (Apartments, Chalets, Hotels) Map

Snow Forecast near Chamonix Sud

Snow Forecasts for Ski Resorts near Chamonix Sud
Ski Area	48 Hr	7 Day
Chamonix	34cm 13in	59cm 23in
La Clusaz	18cm 7in	40cm 16in
La Flégère	28cm 11in	37cm 14in
Flaine	24cm 10in	36cm 14in
Morzine	16cm 6in	35cm 14in
Les Arcs	22cm 9in	33cm 13in
Avoriaz	11cm 5in	19cm 8in
Les Gets	11cm 4in	18cm 7in

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.