Hachimantai Long-Range Snow Forecast
Long-Range Snow Forecast for Hachimantai
This is the Long-range Snow Forecast for Hachimantai, Japan for 17 days from 11 December.
Updated 11 December 2025 22:55 UTC.
Forecast times for Hachimantai are in Japan Time (Asia/Tokyo).
For Forecast detail, see below.
Hachimantai Snow Forecast Highlights
When will there be fresh snow in Hachimantai?
| Next Snow Expected | 11 December |
|---|---|
| Next Snow Amount | 7cm 3in |
| Next 48 Hours | 12cm 5in |
| Next 7 Days | 41cm 16in |
Long-range Snow Outlook for Hachimantai
Snowfall
Snow Line
40cm 16in New Snow
Snow falling to resort level.
There is some snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Powder Alert!
Updated 11 December 2025 23:00 UTC
Powder Possible :- 12cm 5in of Fresh Snow is forecast for Hachimantai over the next 2 days.
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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.
| Base | Snow and Weather | Temp Town | |
|---|---|---|---|
| Thu 11 |  | 7cm 3in New Snow | Max 3℃ 37°F Min -5℃ 22°F |
| Fri 12 | | 4cm 2in New Snow | Max -7℃ 20°F Min -11℃ 12°F |
| Sat 13 |  | Light snow showers. | Max -5℃ 22°F Min -10℃ 15°F |
| Sun 14 |  | 15cm 6in New Snow | Max 4℃ 40°F Min -6℃ 22°F |
| Mon 15 |  | 6cm to 7cm 2in to 3in New Snow | Max 0℃ 32°F Min -7℃ 19°F |
| Tue 16 | | 7cm 3in New Snow | Max 0℃ 31°F Min -6℃ 20°F |
| Wed 17 |  | 1cm New Snow | Max -1℃ 31°F Min -8℃ 17°F |
There is some snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
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 22:55 UTC, next update expected 04:00 UTC.
Ensemble forecast for Hachimantai, Japan at 950m
Daily Mean Temperature (yellow line is control)
Daily Total Precipitation (blue line is control)
Snow Forecast near Hachimantai
| Ski Area | 48 Hr | 7 Day | Th | Fr | Sa | Su | Mo | Tu | We |
|---|---|---|---|---|---|---|---|---|---|
| Akitaken Tazawako Kogen | 18cm 7in | 27cm 11in | |||||||
| Hachimantai Resort | 5cm 2in | 26cm 10in | |||||||
| Shizukuishi | 3cm 1in | 21cm 8in | |||||||
| Amihari | 3cm 1in | 17cm 7in |
Snow Reliability
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.