Hachimantai 7-Day Snow Forecast

Hachimantai Long-Range Snow Forecast Updated today

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Updated 04 November 2026 10:47 PST

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 (3,937ft)
Next Snow Expected	7 November
Next Snow Amount	4in
Next 48 Hours	-
Next 7 Days	7in

Long-range Snow Outlook for Hachimantai

Snowfall

Snow Line

Max 51°F
Min 25°F

7in New Snow

Snow Line from 3,875ft to resort level (3,117ft).

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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 47°F Min 40°F
Thu 05	Drizzle.	Max 51°F Min 41°F
Fri 06	Light snow at altitude, light drizzle below.	Max 51°F Min 31°F
Sat 07	4in New Snow Heavy snow showers. Snow falling to resort level (3,117ft).	Max 31°F Min 28°F
Sun 08	1in New Snow Light snow. Snow falling to resort level (3,117ft).	Max 29°F Min 27°F
Mon 09	1in New Snow Light snow. Snow falling to resort level (3,117ft).	Max 32°F Min 26°F
Tue 10	1in New Snow Heavy snow showers. Snow falling to resort level (3,117ft).	Max 30°F Min 25°F

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 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.

Hachimantai Snow Forecast updated at 10:47 PST, next update expected 16:00 PST.

Ensemble forecast for Hachimantai, Japan at 3,117ft

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	-	14in
Hachimantai Resort	-	7in
Amihari	-	4in
Shizukuishi	-	4in

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.