Hachimantai Resort 7-Day Snow Forecast

Hachimantai Resort Long-Range Snow Forecast Updated today

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Updated 20 March 2026 22:41 GMT

Long-Range Snow Forecast for Hachimantai Resort

Long-range (14 to 45 days) from 21 March.

For Forecast detail, see below.

Hachimantai Resort Snow Forecast Highlights

When will there be fresh snow in Hachimantai Resort?

Hachimantai Resort Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (770m)
Next Snow Expected	21 March
Next Snow Amount	3cm 1in
Next 48 Hours	3cm 1in
Next 7 Days	3cm 1in

Long-range Snow Outlook for Hachimantai Resort

Snowfall

Snow Line

Max 11℃ 53°F
Min -4℃ 25°F

6cm 3in New Snow

Snow Line from 755m 2,477ft to resort level ( 540m 1,772ft ).

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Hachimantai Resort 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 Hachimantai Resort from OpenMeteo(JMA)
	Snow and Weather	Temp Town
Sat 21	3cm to 6cm 1in to 2in New Snow Snow showers at altitude, light rain below. Snow falling to resort level ( 540m 1,772ft ).	Max 0℃ 32°F Min -4℃ 25°F
Sun 22	Clear sky.	Max 8℃ 46°F Min -3℃ 26°F
Mon 23	Clear spells.	Max 10℃ 49°F Min 1℃ 34°F
Tue 24	Clear sky.	Max 6℃ 43°F Min -1℃ 29°F
Wed 25	Fair.	Max 9℃ 48°F Min -2℃ 29°F
Thu 26	Light snow at altitude, light drizzle below.	Max 10℃ 50°F Min 2℃ 36°F
Fri 27	Clear sky.	Max 11℃ 53°F Min 1℃ 34°F

This Snow Forecast for Hachimantai Resort, 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 Hachimantai Resort, 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.

Hachimantai Resort Snow Forecast updated at 22:41 GMT, next update expected 04:00 GMT.

Ensemble forecast for Hachimantai Resort, Japan at 540m

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.

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Snow Forecast near Hachimantai Resort

Snow Forecasts for Ski Resorts near Hachimantai Resort
Ski Area	48 Hr	7 Day
Hachimantai	6cm 2in	7cm 3in
Amihari	1cm -	4cm 1in
Shizukuishi	1cm -	4cm 1in

Snow Reliability

Hachimantai Resort typically enjoys reliable snow conditions, with average snow depths ranging from 1 to 3 meters throughout the season. For the latest snow conditions and updates, check J2Ski for accurate and timely information.

Off-Piste Safety in Hachimantai Resort

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