Hachimantai 7-Day Snow Forecast

Hachimantai Long-Range Snow Forecast Updated today

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Updated 05 November 2026 07:47 NZDT

Long-Range Snow Forecast for Hachimantai

Long-range (14 to 45 days) from 4 November.

For Forecast detail, see below.

Hachimantai Snow Forecast Highlights

When will there be fresh snow in Hachimantai?

Hachimantai Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (1,200m)
Next Snow Expected	7 November
Next Snow Amount	10cm
Next 48 Hours	-
Next 7 Days	19cm

Long-range Snow Outlook for Hachimantai

Snowfall

Snow Line

Max 11℃
Min -4℃

17cm New Snow

Snow Line from 1,181m to resort level (950m).

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Hachimantai 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 from OpenMeteo(JMA)
	Snow and Weather	Temp Town
Wed 04	Clear sky.	Max 9℃ Min 5℃
Thu 05	Drizzle.	Max 10℃ Min 5℃
Fri 06	Light snow at altitude, light drizzle below.	Max 11℃ Min 0℃
Sat 07	10cm New Snow Heavy snow showers. Snow falling to resort level (950m).	Max -1℃ Min -2℃
Sun 08	2cm New Snow Light snow. Snow falling to resort level (950m).	Max -1℃ Min -2℃
Mon 09	2cm New Snow Light snow. Snow falling to resort level (950m).	Max 0℃ Min -3℃
Tue 10	3cm New Snow Heavy snow showers. Snow falling to resort level (950m).	Max -1℃ Min -4℃

This Snow Forecast for Hachimantai, 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, 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 Snow Forecast updated at 07:47 NZDT, next update expected 13:00 NZDT.

Ensemble forecast for Hachimantai, Japan at 950m

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 Hachimantai

Snow Forecasts for Ski Resorts near Hachimantai
Ski Area	48 Hr	7 Day
Akitaken Tazawako Kogen	-	37cm
Hachimantai Resort	-	18cm
Amihari	-	9cm
Shizukuishi	-	9cm

How reliable is the snow in Hachimantai?

Hachimantai enjoys reliable snow conditions, with average snow depth reaching up to 2 meters during peak season. For the latest snow information, check J2Ski regularly.

Off-Piste Safety in Hachimantai

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