Chamonix Sud 7-Day Snow Forecast

Chamonix Sud Long-Range Snow Forecast Updated today

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Updated 12 April 2026 23:40 AEST

Long-Range Snow Forecast for Chamonix Sud

Long-range (14 to 45 days) from 12 April.

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	12 April
Next Snow Amount	8cm
Next 48 Hours	12cm
Next 7 Days	12cm
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Long-range Snow Outlook for Chamonix Sud

Snowfall

Snow Line

Max 15℃
Min 0℃

10cm New Snow

Snow Line from 2,286m to 1,271m, with rain below.

Powder Alert!

Powder Alarm issued 12 April 2026 23:54 AEST

Powder Possible :- 12cm 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
Sun 12	up to 4cm New Snow Snow showers at altitude, rain showers below. Snow Line from 2,286m to 1,748m, with rain below.	Max 10℃ Min 6℃
Mon 13	up to 5cm New Snow Light snow at altitude, light drizzle below. Snow Line from 1,948m to 1,363m, with rain below.	Max 7℃ Min 4℃
Tue 14	up to 1cm New Snow Cloudy at altitude, fair below. Snow Line from 1,348m to 1,271m, with rain below.	Max 10℃ Min 3℃
Wed 15	Clear sky.	Max 13℃ Min 0℃
Thu 16	Clear sky at altitude, clear spells below.	Max 13℃ Min 1℃
Fri 17	Clear spells at altitude, cloudy below.	Max 15℃ Min 2℃
Sat 18	Clear sky.	Max 13℃ Min 4℃

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 23:40 AEST, next update expected 05:00 AEST.

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.

Snow Forecast near Chamonix Sud

Snow Forecasts for Ski Resorts near Chamonix Sud
Ski Area	48 Hr	7 Day
Avoriaz	12cm	12cm
La Clusaz	14cm	14cm
Morzine	13cm	13cm
Chamonix	10cm	10cm
Les Arcs	8cm	8cm
Flaine	7cm	7cm
La Flégère	7cm	7cm
Les Gets	3cm	3cm

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.