Niseko Grand Hirafu 7-Day Snow Forecast

Niseko Grand Hirafu Long-Range Snow Forecast Updated today

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Updated 01 November 2026 11:44 NZDT

Long-Range Snow Forecast for Niseko Grand Hirafu

Long-range (14 to 45 days) from 1 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	2 November
Next Snow Amount	4cm
Next 48 Hours	9cm
Next 7 Days	17cm

Long-range Snow Outlook for Niseko Grand Hirafu

Snowfall

Snow Line

Max 11℃
Min 0℃

15cm New Snow

Snow Line from 1,054m to resort level (300m).

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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
Sun 01	Fair.	Max 4℃ Min 1℃
Mon 02	2cm to 4cm New Snow Light snow showers at altitude, light rain showers below. Snow falling to resort level (300m).	Max 7℃ Min 1℃
Tue 03	up to 5cm New Snow Snow showers at altitude, rain showers below. Snow Line from 623m to resort level (300m).	Max 5℃ Min 1℃
Wed 04	up to 3cm New Snow Snow showers at altitude, rain showers below. Snow Line from 762m to resort level (300m).	Max 5℃ Min 1℃
Thu 05	Fair.	Max 11℃ Min 2℃
Fri 06	Light snow at altitude, drizzle below.	Max 11℃ Min 4℃
Sat 07	1cm to 2cm New Snow Light snow. Snow Line from 546m to resort level (300m).	Max 3℃ Min 0℃

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 11:44 NZDT, 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	10cm	19cm
Kiroro	9cm	18cm
Niseko	9cm	18cm
Niseko Village/Higashiyama	9cm	18cm
Niseko Hanazono	8cm	17cm
Niseko Kokusai Moiwa	9cm	16cm
Rusutsu	7cm	10cm

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.