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Happo One Long-Range Snow Forecast - 12th April 2026

Happo One Long-Range Snow Forecast Updated today

ECMWF IFS
GFS
JMA

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Updated 12 April 2026 14:42 AEST

Long-Range Snow Forecast for Happo One

Long-range (14 to 45 days) from 12 April.

For Forecast detail, see below.

Happo One Snow Forecast Highlights

When will there be fresh snow in Happo One?

Happo One Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (1,296m)
Next Snow?
There is no snow currently in the forecast for Happo One.

Long-range Snow Outlook for Happo One

 
Snowfall

 
Snow Line

Max 21℃
Min 6℃

Snow unlikely

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Happo One 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 Happo One from OpenMeteo(JMA)
BaseSnow and WeatherTemp
Town
Sun
12
Clear

Clear sky.

Max 15℃
Min 6℃
Mon
13
Clear

Fair at altitude, clear sky below.

Max 21℃
Min 6℃
Tue
14
Clear

Clear sky.

Max 20℃
Min 8℃
Wed
15
Drizzle

Drizzle.

Max 15℃
Min 9℃
Thu
16
Clear

Clear sky.

Max 20℃
Min 9℃
Fri
17
Mixed

Clear spells.

Max 17℃
Min 7℃
Sat
18
Lt Drizzle

Light drizzle.

Max 18℃
Min 7℃

No significant snowfall is forecast for this period.

This Snow Forecast for Happo One, 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 Happo One, 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.

Happo One Snow Forecast updated at 14:42 AEST, next update expected imminently.

Ensemble forecast for Happo One, Japan at 760m

Daily Mean Temperature (yellow line is control)
Daily Total Precipitation (blue line is control)

Snow Reliability

Happo One typically enjoys reliable snow conditions, with an average snow depth of 3 to 4 meters during peak season. For the latest snow reports and updates, check J2Ski.

Off-Piste Safety in Happo One

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