Niseko 7-Day Snow Forecast

Niseko Long-Range Snow Forecast Updated today

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Updated 23 May 2026 01:40 AEST

Long-Range Snow Forecast for Niseko

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

For Forecast detail, see below.

Niseko Snow Forecast Highlights

When will there be fresh snow in Niseko?

Niseko Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (804m)
Next Snow?
There is no snow currently in the forecast for Niseko.

Long-range Snow Outlook for Niseko

Snowfall

Snow Line

Max 18℃
Min 6℃

Snow unlikely

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Niseko 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 Niseko from OpenMeteo(JMA)
	Snow and Weather	Temp Town
Fri 22	Clear sky.	Max 18℃ Min 6℃
Sat 23	Fair.	Max 16℃ Min 6℃
Sun 24	Light rain showers.	Max 14℃ Min 7℃
Mon 25	Clear spells.	Max 17℃ Min 10℃
Tue 26	Cloudy.	Max 17℃ Min 10℃
Wed 27	Clear spells.	Max 17℃ Min 11℃
Thu 28	Light drizzle.	Max 18℃ Min 12℃

No significant snowfall is forecast for this period.

This Snow Forecast for Niseko, Japan 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 Niseko, on any given trail 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.

Niseko Snow Forecast updated at 01:40 AEST, next update expected 04:00 AEST.

Ensemble forecast for Niseko, Japan at 300m

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

Niseko is famous for its reliable snowfall, often receiving over 15 meters each season and maintaining excellent snow depth. To ensure you have the latest snow conditions, check J2Ski for up-to-date information on snow quality and weather forecasts.

Off-Piste Safety in Niseko

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