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Happo One Long-Range Snow Forecast - 22nd May 2026

Happo One Long-Range Snow Forecast Updated today

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JMA

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Updated 22 May 2026 16:40 BST

Long-Range Snow Forecast for Happo One

Long-range (14 to 45 days) from 22 May.

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 27℃ 80°F
Min 10℃ 49°F

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
Fri
22
Mixed

Light snow at altitude, light rain below.

Max 17℃ 63°F
Min 11℃ 52°F
Sat
23
Mixed

Clear spells.

Max 18℃ 64°F
Min 10℃ 49°F
Sun
24
Mixed

Clear spells.

Max 19℃ 67°F
Min 10℃ 51°F
Mon
25
Clear

Clear sky.

Max 25℃ 77°F
Min 11℃ 52°F
Tue
26
Lt Rain

Light rain showers.

Max 25℃ 77°F
Min 12℃ 53°F
Wed
27
Lt Drizzle

Light drizzle.

Max 23℃ 73°F
Min 15℃ 59°F
Thu
28
Lt Drizzle

Light drizzle.

Max 27℃ 80°F
Min 15℃ 59°F

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 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.

Happo One Snow Forecast updated at 16:40 BST, next update expected 19:00 BST.

Ensemble forecast for Happo One, Japan at 760m

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

Japan Hotels Map

 

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.