Unterwasser 7-Day Snow Forecast

Unterwasser Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 05 May 2026 01:41 UTC

Long-Range Snow Forecast for Unterwasser

Long-range (14 to 45 days) from 5 May.

For Forecast detail, see below.

Unterwasser Snow Forecast Highlights

When will there be fresh snow in Unterwasser?

Unterwasser Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,581m)
Next Snow Expected	16 May
Next Snow Amount	2cm 1in
Next 48 Hours	- -
Next 7 Days	- -

Long-range Snow Outlook for Unterwasser

Snowfall

Snow Line

Max 19℃ 67°F
Min 2℃ 36°F

4cm 1in New Snow

Snow Line from 2,192m 7,192ft to 1,454m 4,770ft , with rain below.

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Unterwasser 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 Unterwasser from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Tue 05	Cloudy.	Max 17℃ 62°F Min 7℃ 44°F
Wed 06	up to 2cm up to 1in New Snow Snow showers at altitude, rain showers below. Snow Line from 2,192m 7,192ft to 1,500m 4,921ft , with rain below.	Max 12℃ 53°F Min 5℃ 40°F
Thu 07	up to 1cm up to 1in New Snow Fair at altitude, light drizzle below. Snow Line from 1,515m 4,970ft to 1,454m 4,770ft , with rain below.	Max 14℃ 58°F Min 5℃ 41°F
Fri 08	Clear spells at altitude, light rain showers below.	Max 17℃ 62°F Min 2℃ 36°F
Sat 09	Clear sky.	Max 19℃ 66°F Min 8℃ 46°F
Sun 10	Cloudy at altitude, light drizzle below.	Max 19℃ 65°F Min 10℃ 50°F
Mon 11	Cloudy at altitude, clear spells below.	Max 19℃ 67°F Min 10℃ 49°F

This Snow Forecast for Unterwasser, 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 Unterwasser, 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.

Unterwasser Snow Forecast updated at 01:41 UTC, next update expected 07:00 UTC.

Ensemble forecast for Unterwasser, Switzerland at 900m

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 Unterwasser

Snow Forecasts for Ski Resorts near Unterwasser
Ski Area	48 Hr	7 Day
Flims	13cm 5in	14cm 5in
Schwägalp	7cm 3in	7cm 3in
Flumserberg	3cm 1in	3cm 1in
Wildhaus	3cm 1in	3cm 1in

Snow Reliability

Unterwasser typically enjoys reliable snow conditions, with an average snow depth of 50-100 cm throughout the season. For the latest updates on snowfall and conditions, check J2Ski for accurate and timely information.

Off-Piste Safety in Unterwasser

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