Aletsch 7-Day Snow Forecast

Aletsch Long-Range Snow Forecast Updated today

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Updated 23 May 2026 00:44 NZST

Long-Range Snow Forecast for Aletsch

Long-range (14 to 45 days) from 22 May.

For Forecast detail, see below.

Aletsch Snow Forecast Highlights

When will there be fresh snow in Aletsch?

Aletsch Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,975m)
Next Snow?
There is no snow currently in the forecast for Aletsch.
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Long-range Snow Outlook for Aletsch

Snowfall

Snow Line

Max 28℃
Min 5℃

Snow unlikely

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Aletsch 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 Aletsch from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Fri 22	Clear sky.	Max 24℃ Min 5℃
Sat 23	Clear sky.	Max 26℃ Min 10℃
Sun 24	Clear sky at altitude, fair below.	Max 26℃ Min 6℃
Mon 25	Clear sky.	Max 27℃ Min 11℃
Tue 26	Clear sky.	Max 28℃ Min 9℃
Wed 27	Clear sky at altitude, fair below.	Max 26℃ Min 8℃
Thu 28	Clear sky.	Max 25℃ Min 7℃

No significant snowfall is forecast for this period.

This Snow Forecast for Aletsch, Switzerland 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 Aletsch, 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.

Aletsch Snow Forecast updated at 00:44 NZST, next update expected imminently.

Ensemble forecast for Aletsch, Switzerland at 1,050m

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.

Switzerland Hotels Map

Snow Reliability

Aletsch enjoys reliable snow conditions with average snow depths reaching up to 3 meters during peak season. Regular snowfall throughout the winter months helps maintain excellent skiing conditions, and for the latest updates, check J2Ski for real-time snow information.

Off-Piste Safety in Aletsch

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