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Niseko Grand Hirafu 7-Day Snow Forecast - 20th September 2026

Niseko Grand Hirafu Snow Forecast - 7 day

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Updated 21 September 2026 06:43 NZST

7-Day Snow Forecast for Niseko Grand Hirafu

1-week from 20 September.

For Forecast detail, see below.

Niseko Grand Hirafu 7-Day 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?
There is no snow currently in the forecast for Niseko Grand Hirafu.

7-Day Snow Outlook for Niseko Grand Hirafu

 
Snowfall

 
Snow Line

Max 24℃
Min 10℃

Snow unlikely

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Niseko Grand Hirafu Medium-Range (7-Day) Snow Forecast Detail

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.

Max 22℃
Min 16℃

Valley temperatures from an overnight low of 16℃ to daytime highs around 22℃

Temperature at BaseTemp at Base

Sun
20

Snow unlikely

FairFairCloudFair

Fair, cloudy, fair later.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

Max 24℃
Min 15℃

Valley temperatures from an overnight low of 15℃ to daytime highs around 24℃

Temperature at BaseTemp at Base

Mon
21

Snow unlikely

ClearClearClearFair

Clear sky early, then fair later.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

Max 19℃
Min 13℃

Valley temperatures from an overnight low of 13℃ to daytime highs around 19℃

Temperature at BaseTemp at Base

Tue
22

Snow unlikely

ClearClearClearClear

Clear sky.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

Max 21℃
Min 11℃

Valley temperatures from an overnight low of 11℃ to daytime highs around 21℃

Temperature at BaseTemp at Base

Wed
23

Snow unlikely

ClearFairClearLt Drizzle

Clear sky first, fair then clear sky, light drizzle later.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

Max 18℃
Min 12℃

Valley temperatures from an overnight low of 12℃ to daytime highs around 18℃

Temperature at BaseTemp at Base

Thu
24

Snow unlikely

Lt DrizzleMixedMixedFair

Light drizzle, clear spells, fair later.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

Max 17℃
Min 11℃

Valley temperatures from an overnight low of 11℃ to daytime highs around 17℃

Temperature at BaseTemp at Base

Fri
25

Snow unlikely

ClearClearLt DrizzleMixed

Clear sky, light drizzle, clear spells later.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

Max 19℃
Min 10℃

Valley temperatures from an overnight low of 10℃ to daytime highs around 19℃

Temperature at BaseTemp at Base

Sat
26

Snow unlikely

FairLt RainLt DrizzleFair

Fair first, light rain then light drizzle, fair later.

Forecast times for Niseko Grand Hirafu are in Tokyo (Asia/Tokyo) time zone.

No significant snowfall is forecast for this period.

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 06:43 NZST, next update expected 09:00 NZST.

Snow Reliability

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.