Chamonix Sud 7-Day Snow Forecast

Chamonix Sud Long-Range Snow Forecast Updated today

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Updated 25 June 2026 11:46 AEST

Long-Range Snow Forecast for Chamonix Sud

Long-range (14 to 45 days) from 25 June.

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?
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 31℃
Min 15℃

Snow unlikely

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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 25	Clear sky.	Max 28℃ Min 16℃
Fri 26	Clear sky.	Max 29℃ Min 17℃
Sat 27	Clear sky.	Max 31℃ Min 17℃
Sun 28	Light snow at altitude, light rain below.	Max 30℃ Min 17℃
Mon 29	Clear sky at altitude, rain showers below.	Max 28℃ Min 16℃
Tue 30	Snow showers at altitude, thunderstorms below.	Max 24℃ Min 15℃
Wed 01	Light snow at altitude, rain showers below.	Max 22℃ Min 16℃

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 11:46 AEST, next update expected 17:00 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 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.