Niseko Grand Hirafu 7-Day Snow Forecast

Niseko Grand Hirafu Long-Range Snow Forecast Updated today

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Updated 03 November 2026 11:41 CST

Long-Range Snow Forecast for Niseko Grand Hirafu

Long-range (14 to 45 days) from 3 November.

For Forecast detail, see below.

Niseko Grand Hirafu Snow Forecast Highlights

When will there be fresh snow in Niseko Grand Hirafu?

Niseko Grand Hirafu Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (804m)
Next Snow Expected	3 November
Next Snow Amount	2cm
Next 48 Hours	6cm
Next 7 Days	29cm

Long-range Snow Outlook for Niseko Grand Hirafu

Snowfall

Snow Line

Max 13℃
Min -1℃

29cm New Snow

Snow Line from 715m to resort level (300m).

Powder Alert!

Powder Alarm issued 03 November 2026 11:58 CST

Powder Possible :- 21cm of Fresh Snow is forecast for Niseko Grand Hirafu over the next 4 days.

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Niseko Grand Hirafu 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 Grand Hirafu from OpenMeteo(JMA)
	Snow and Weather	Temp Town
Tue 03	up to 2cm New Snow Light snow showers at altitude, light rain showers below. Snow Line from 315m to resort level (300m).	Max 5℃ Min 1℃
Wed 04	up to 5cm New Snow Snow showers at altitude, rain showers below. Snow Line from 715m to 454m, with rain below.	Max 7℃ Min 3℃
Thu 05	Clear sky.	Max 13℃ Min 3℃
Fri 06	up to 1cm New Snow Light snow showers at altitude, light rain showers below. Snow Line from 515m to resort level (300m).	Max 13℃ Min 1℃
Sat 07	5cm to 14cm New Snow Heavy snow showers at altitude, light rain below. Snow falling to resort level (300m).	Max 1℃ Min 0℃
Sun 08	2cm to 5cm New Snow Light snow. Snow falling to resort level (300m).	Max 1℃ Min 0℃
Mon 09	1cm to 2cm New Snow Light snow. Snow falling to resort level (300m).	Max 0℃ Min -1℃

This Snow Forecast for Niseko Grand Hirafu, 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 Grand Hirafu, 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.

Niseko Grand Hirafu Snow Forecast updated at 11:41 CST, next update expected imminently.

Ensemble forecast for Niseko Grand Hirafu, 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.

Japan Accommodation (Apartments, Chalets, Hotels) Map

Snow Forecast near Niseko Grand Hirafu

Snow Forecasts for Ski Resorts near Niseko Grand Hirafu
Ski Area	48 Hr	7 Day
Niseko Annupuri	7cm	31cm
Niseko	7cm	30cm
Niseko Village/Higashiyama	7cm	30cm
Kiroro	9cm	29cm
Niseko Hanazono	5cm	29cm
Niseko Kokusai Moiwa	5cm	28cm
Rusutsu	4cm	14cm

How reliable is the snow in Niseko Grand Hirafu?

Niseko Grand Hirafu enjoys exceptional snow reliability, with an average snowfall of over 15 meters each season. Snow depths typically range from 1 to 3 meters, encouraging skiers to check J2Ski for the latest snow reports.

Off-Piste Safety in Niseko Grand Hirafu

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