Chamonix Sud Snow Report and Forecast
Updated 21 October 2026 07:54 CDT
Snow Forecast for Chamonix Sud
Snow and Weather from 21 October.
For Forecast detail, see below.
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Chamonix Sud Snow Forecast Highlights
When will there be fresh snow in Chamonix Sud?
| Next Snow Expected | 21 October |
|---|---|
| Next Snow Amount | 13cm |
| Next 48 Hours | 27cm |
| Next 7 Days | 39cm |
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Forecast for today in Chamonix Sud
Max 10℃
Min 4℃
Valley temperatures from an overnight low of 4℃ to daytime highs around 10℃
Freeze-thaw from mid-mountain up.
Temperature at BaseTemp at Base
Snowfall
Snow Line
Wed
21
up to 20cm New Snow
Light rain showers, rain showers, snow showers at altitude later.
Snow Line from 2,348m to 1,409m, with rain below.
Forecast times for Chamonix Sud are in Paris (Europe/Paris) time zone.
Powder Alert!
Powder Alarm issued 21 October 2026 12:53 CDT
Powder Possible :- 27cm of Fresh Snow is forecast for Chamonix Sud over the next 2 days.
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Chamonix Sud 7-Day Snow Forecast Overview
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| Wed 21 | Thu 22 | Fri 23 | Sat 24 | Sun 25 | Mon 26 | Tue 27 | |
|---|---|---|---|---|---|---|---|
| Wind | |||||||
| 3,840m | -7℃
 +20cm
| -9℃
 | -8℃
+14cm
| -13℃
+6cm
| -7℃
 +20cm
| -4℃
 | -1℃
|
| 2,440m | 1℃
+13cm
| -1℃
| 0℃
+14cm
| -6℃
+5cm
| 1℃
+7cm
| 5℃
| 7℃
|
| 1,040m | 10℃
| 11℃
 | 10℃
 | 6℃
| 10℃
| 15℃
| 19℃
|
| Snow Line | varying 2,348m | 1,348m | varying 2,348m | varying 1,625m | varying 2,271m | ||
| Max Town | 10℃ | 11℃ | 10℃ | 6℃ | 10℃ | 15℃ | 19℃ |
| Min Town | 4℃ | -1℃ | 1℃ | 0℃ | 1℃ | 2℃ | 6℃ |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
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Snow Forecast near Chamonix Sud
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.
Understanding and predicting Snow Conditions in Chamonix Sud
Here are our tips for making the most of a trip to Chamonix Sud, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Chamonix Sud, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Chamonix Sud is uncontrolled and un-marked slopes are not made safe (from avalanche risk) or patrolled. Always check local advice, know the Avalanche Risk Level, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Chamonix Sud will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Chamonix Sud for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.