Las Leñas 7-Day Snow Forecast

Las Leñas Long-Range Snow Forecast Updated today

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Updated 21 September 2026 06:47 NZST

Long-Range Snow Forecast for Las Leñas

Long-range (14 to 45 days) from 20 September.

For Forecast detail, see below.

Las Leñas Snow Forecast Highlights

When will there be fresh snow in Las Leñas?

Las Leñas Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (2,843m)
Next Snow Expected	20 September
Next Snow Amount	34cm
Next 48 Hours	35cm
Next 7 Days	86cm

Long-range Snow Outlook for Las Leñas

Snowfall

Snow Line

Max 5℃
Min -8℃

77cm New Snow

Snow Line from 2,789m to resort level (2,256m).

Powder Alert!

Powder Alarm issued 21 September 2026 07:52 NZST

Powder Possible :- 35cm of Fresh Snow is forecast for Las Leñas over the next 2 days.

Las Leñas 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 Las Leñas from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Sun 20	27cm to 34cm New Snow Snow showers. Snow falling to resort level (2,256m).	Max 1℃ Min -2℃
Mon 21	1cm New Snow Clear sky. Snow falling to resort level (2,256m).	Max 3℃ Min -8℃
Tue 22	Clear sky.	Max 5℃ Min -4℃
Wed 23	up to 3cm New Snow Light snow showers at altitude, light rain showers below. Snow Line from 2,589m to 2,259m, with rain below.	Max 5℃ Min -1℃
Thu 24	2cm to 23cm New Snow Heavy snow at altitude, rain showers below. Snow Line from 2,459m to resort level (2,256m).	Max 3℃ Min 0℃
Fri 25	4cm to 8cm New Snow Light snow. Snow Line from 2,549m to resort level (2,256m).	Max 3℃ Min 0℃
Sat 26	1cm to 7cm New Snow Snow showers at altitude, light rain below. Snow Line from 2,789m to resort level (2,256m).	Max 4℃ Min -1℃

This Snow Forecast for Las Leñas, Argentina 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 Las Leñas, 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.

Las Leñas Snow Forecast updated at 06:47 NZST, next update expected 09:00 NZST.

Ensemble forecast for Las Leñas, Argentina at 2,256m

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 Reliability

With an average snow depth of over 2 meters and consistent snowfall, Las Leñas boasts excellent snow reliability. For the latest snow conditions, be sure to check J2Ski for updated information.

Off-Piste Safety in Las Leñas

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