Chamonix 7-Day Snow Forecast

Chamonix Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 12 August 2026 12:42 NZST

Long-Range Snow Forecast for Chamonix

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

For Forecast detail, see below.

Chamonix Snow Forecast Highlights

When will there be fresh snow in Chamonix?

Chamonix Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (2,440m)
Next Snow?
There is no snow currently in the forecast for Chamonix.
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Long-range Snow Outlook for Chamonix

Snowfall

Snow Line

Max 30℃
Min 13℃

12cm New Snow

Snow Line from 3,661m to 2,938m, with rain below.

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Chamonix 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 from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Wed 12	Clear sky.	Max 29℃ Min 15℃
Thu 13	Clear sky.	Max 30℃ Min 17℃
Fri 14	Clear sky.	Max 30℃ Min 17℃
Sat 15	Clear sky at altitude, rain showers below.	Max 29℃ Min 17℃
Sun 16	up to 1cm New Snow Cloudy. Snow Line from 3,538m to 3,199m, with rain below.	Max 21℃ Min 14℃
Mon 17	up to 1cm New Snow Light snow at altitude, light drizzle below. Snow Line from 3,661m to 3,092m, with rain below.	Max 20℃ Min 13℃
Tue 18	up to 10cm New Snow Light snow at altitude, light rain below. Snow Line from 3,322m to 2,938m, with rain below.	Max 16℃ Min 14℃

This Snow Forecast for Chamonix, 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, 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 Snow Forecast updated at 12:42 NZST, next update expected imminently.

Ensemble forecast for Chamonix, France at 1,040m

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

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

Snow Forecasts for Ski Resorts near Chamonix
Ski Area	48 Hr	7 Day
Ski Pass Mont Blanc	-	15cm
Chamonix Sud	-	13cm
Argentière	-	3cm

Snow Reliability

Chamonix typically enjoys reliable snowfall, with an average snow depth of 80-200 cm throughout the season. For the latest snow conditions, be sure to check J2Ski for up-to-date information.

Off-Piste Safety in Chamonix

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