Hachimantai Weather
Weather Forecast for Hachimantai ( 950m to 1,450m 3,117ft to 4,757ft )
This is the Snow Forecast and Weather Outlook for Hachimantai, Japan for 16 days from 6 December.
Updated 05 December 2025 20:38 UTC.
Forecast times for Hachimantai are in Japan Time (Asia/Tokyo).
Hachimantai Forecast
See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.
Hachimantai Weather Forecast updated at 20:38 UTC, next update expected 02:00 UTC.
Long-range Snow Outlook for Hachimantai
Snowfall
Snow Line
20cm 8in 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.
Hachimantai has very light new snow forecast in the next 48 hours.
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Hachimantai Daily Weather Forecast Detail
| Base | Snow and Weather | Temp Town | |
|---|---|---|---|
| Sat 06 |  | Fair. | Max 2℃ 35°F Min -4℃ 25°F |
| Sun 07 |  | Light rain. | Max 4℃ 39°F Min 1℃ 34°F |
| Mon 08 |  | Light snow. | Max 4℃ 40°F Min -4℃ 24°F |
| Tue 09 | | 1cm New Snow | Max -4℃ 25°F Min -7℃ 20°F |
| Wed 10 |  | 1cm New Snow | Max -3℃ 27°F Min -6℃ 21°F |
| Thu 11 |  | 15cm 6in New Snow | Max -1℃ 31°F Min -10℃ 14°F |
| Fri 12 | | 4cm 2in New Snow | Max -8℃ 18°F Min -11℃ 13°F |
There is some snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In to see the full long-range weather forecast (out to 16 days, 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 Weather Forecast updated at 20:38 UTC, next update expected 02:00 UTC.
Current Snow
For current snow depths and skiing conditions, see our Current Snow Report for Hachimantai.For more information about this Japanese Ski Resort, See Also Skiing and Snowboarding in Hachimantai .
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.