Niseko Grand Hirafu 7-Day Snow Forecast

Niseko Grand Hirafu Long-Range Snow Forecast Updated today

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Updated 27 October 2026 03:42 UTC

Long-Range Snow Forecast for Niseko Grand Hirafu

Long-range (14 to 45 days) from 27 October.

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	28 October
Next Snow Amount	11cm 4in
Next 48 Hours	11cm 4in
Next 7 Days	25cm 10in

Long-range Snow Outlook for Niseko Grand Hirafu

Snowfall

Snow Line

Max 15℃ 58°F
Min 1℃ 33°F

28cm 11in New Snow

Snow Line from 1,054m 3,458ft to resort level ( 300m 984ft ).

Powder Alert!

Powder Alarm issued 27 October 2026 07:50 UTC

Powder Possible :- 11cm 4in of Fresh Snow is forecast for Niseko Grand Hirafu over the next 2 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 27	up to 2cm up to 1in New Snow Heavy snow showers at altitude, heavy rain showers below. Snow Line from 1,038m 3,406ft to 746m 2,448ft , with rain below.	Max 9℃ 48°F Min 4℃ 40°F
Wed 28	2cm to 12cm 1in to 5in New Snow Heavy snow showers at altitude, light rain below. Snow Line from 638m 2,093ft to resort level ( 300m 984ft ).	Max 4℃ 39°F Min 1℃ 33°F
Thu 29	up to 2cm up to 1in New Snow Snow showers at altitude, rain showers below. Snow Line from 946m 3,104ft to 900m 2,953ft , with rain below.	Max 8℃ 47°F Min 1℃ 33°F
Fri 30	Light drizzle.	Max 15℃ 58°F Min 8℃ 47°F
Sat 31	up to 3cm up to 1in New Snow Light snow at altitude, light drizzle below. Snow Line from 992m 3,255ft to 423m 1,388ft , with rain below.	Max 12℃ 53°F Min 2℃ 36°F
Sun 01	up to 8cm up to 3in New Snow Heavy snow showers at altitude, light rain below. Snow Line from 485m 1,591ft to resort level ( 300m 984ft ).	Max 3℃ 37°F Min 1℃ 34°F
Mon 02	up to 1cm New Snow Light snow at altitude, light drizzle below. Snow Line from 1,054m 3,458ft to 515m 1,690ft , with rain below.	Max 8℃ 46°F Min 3℃ 37°F

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 03:42 UTC, 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
Kiroro	22cm 9in	40cm 16in
Niseko	17cm 7in	34cm 13in
Niseko Village/Higashiyama	14cm 6in	30cm 12in
Niseko Annupuri	13cm 5in	29cm 11in
Niseko Hanazono	9cm 3in	24cm 9in
Niseko Kokusai Moiwa	10cm 4in	23cm 9in
Rusutsu	13cm 5in	16cm 6in

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.