Chamonix Sud 7-Day Snow Forecast

Chamonix Sud Long-Range Snow Forecast Updated today

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Updated 01 October 2026 13:45 BST

Long-Range Snow Forecast for Chamonix Sud

Long-range (14 to 45 days) from 1 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	8 October
Next Snow Amount	2cm 1in
Next 48 Hours	- -
Next 7 Days	2cm 1in
Find a Ski Instructor	Book Lessons

Long-range Snow Outlook for Chamonix Sud

Snowfall

Snow Line

Max 21℃ 69°F
Min 9℃ 48°F

18cm 7in New Snow

Snow Line from 3,671m 12,044ft to 2,548m 8,360ft , 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
Thu 01	up to 5cm up to 2in New Snow Light snow at altitude, light rain below. Snow Line from 3,271m 10,732ft to 2,948m 9,672ft , with rain below.	Max 19℃ 66°F Min 14℃ 57°F
Fri 02	up to 1cm New Snow Light snow at altitude, light drizzle below. Snow Line from 3,517m 11,539ft to 2,855m 9,367ft , with rain below.	Max 19℃ 66°F Min 13℃ 55°F
Sat 03	up to 2cm up to 1in New Snow Cloudy. Snow Line from 3,671m 12,044ft to 2,548m 8,360ft , with rain below.	Max 20℃ 67°F Min 11℃ 52°F
Sun 04	up to 1cm New Snow Clear spells at altitude, light drizzle below. Snow Line from 3,332m 10,932ft to 2,609m 8,560ft , with rain below.	Max 19℃ 66°F Min 12℃ 53°F
Mon 05	Snow showers at altitude, rain showers below.	Max 19℃ 66°F Min 9℃ 48°F
Tue 06	up to 6cm up to 2in New Snow Snow showers at altitude, rain showers below. Snow Line from 3,302m 10,833ft to 2,948m 9,672ft , with rain below.	Max 21℃ 69°F Min 10℃ 50°F
Wed 07	up to 3cm up to 1in New Snow Cloudy at altitude, rain showers below. Snow Line from 3,132m 10,276ft to 3,009m 9,872ft , with rain below.	Max 20℃ 68°F Min 10℃ 49°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 13:45 BST, next update expected 19:00 BST.

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	8cm 3in	34cm 13in
La Flégère	-	3cm 1in
La Clusaz	-	2cm 1in
Morzine	-	2cm 1in
Avoriaz	-	1cm -
Flaine	-	1cm -
Les Arcs	-	1cm 1in

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.

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.