Hachimantai Snow Report and Forecast
Snow Forecast for Hachimantai
This is the Snow Forecast for Hachimantai, Japan for 16 days from 18 November.
Updated 18 November 2025 09:34 AEDT.
Forecast times for Hachimantai are in Japan Time (Asia/Tokyo).
For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Hachimantai.
There is a useful amount of snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In to see the full long-range snow forecast (out to 16 days, with more weather detail).
Hachimantai Snow Forecast Highlights
When will there be fresh snow in Hachimantai?
| Next Snow Expected | 18 November |
|---|---|
| Next Snow Amount | 17cm |
| Next 48 Hours | 19cm |
| Next 7 Days | 26cm |
Forecast for today in Hachimantai
Max -3℃
Min -7℃
Below freezing at all levels, with valley temperatures as low as -7℃ and not getting above -3℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Tue
18
17cm New Snow
Heavy snow, heavy snow showers, light snow later.
Snow falling to resort level.
Powder Alert!
Updated 18 November 2025 09:42 AEDT
Powder Possible :- 26cm of Fresh Snow is forecast for Hachimantai over the next 2 days.
Hachimantai Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
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| Tue 18 | Wed 19 | Thu 20 | Fri 21 | Sat 22 | Sun 23 | Mon 24 | |
|---|---|---|---|---|---|---|---|
| Wind | W F2 | W F3 | NW F4 | SW F2 | SW F2 | ||
| 1,450m | -3℃
+17cm
| -1℃
 +2cm
| 4℃
| 4℃
 +4cm
| -4℃
+1cm
| 2℃
| 3℃
 |
| W F2 | W F3 | NW F4 | SW F2 | SW F2 | |||
| 1,200m | -3℃
+17cm
| -1℃
+2cm
| 4℃
| 4℃
+4cm
| -2℃
+1cm
| 4℃
| 5℃
|
| W F2 | W F3 | NW F4 | SW F2 | SW F2 | |||
| 950m | -3℃
+17cm
| -1℃
+2cm
| 4℃
| 4℃
+3cm
| 0℃
+1cm
| 6℃
| 6℃
|
| Snow Line | 950m | 950m | varying 1,219m | 950m | |||
| Max Town | -3℃ | -1℃ | 4℃ | 4℃ | 0℃ | 6℃ | 6℃ |
| Min Town | -7℃ | -6℃ | -2℃ | -1℃ | -3℃ | 0℃ | 5℃ |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
Hachimantai Medium-Range (7-Day) Snow Forecast Detail
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.
Max -3℃
Min -7℃
Below freezing at all levels, with valley temperatures as low as -7℃ and not getting above -3℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Tue
18
17cm New Snow
Heavy snow, heavy snow showers, light snow later.
Snow falling to resort level.
Max -1℃
Min -6℃
Below freezing at all levels, with valley temperatures as low as -6℃ and not getting above -1℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Wed
19
2cm New Snow
Fair early, then clear spells later.
Snow falling to resort level.
Max 4℃
Min -2℃
Freeze-thaw conditions, with valley temperatures cooling to -2℃ and rising to 4℃
Temperature at BaseTemp at Base
Thu
20
Snow unlikely
Clear spells first, fair then light drizzle, light rain later.
Max 4℃
Min -1℃
Freeze-thaw conditions, with valley temperatures cooling to -1℃ and rising to 4℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Fri
21
3cm to 4cm New Snow
Cloudy, light snow, clear spells later.
Snow Line from 1,219m to resort level.
Max 0℃
Min -3℃
Below freezing at all levels, with valley temperatures as low as -3℃ and not getting above 0℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Sat
22
1cm New Snow
Cloudy early, then clear spells later.
Snow falling to resort level.
Max 6℃
Min 0℃
Valley temperatures from an overnight low of 0℃ to daytime highs around 6℃
Freeze-thaw from mid-mountain up.
Temperature at BaseTemp at Base
Sun
23
Snow unlikely
Clear spells, cloudy, light rain later.
Max 6℃
Min 5℃
Valley temperatures from an overnight low of 5℃ to daytime highs around 6℃
Temperature at BaseTemp at Base
Mon
24
Snow unlikely
Light rain showers, cloudy, clear spells later.
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 09:34 AEDT, next update expected 15:00 AEDT.
Snow Forecast near Hachimantai
| Ski Area | 48 Hr | 7 Day | Tu | We | Th | Fr | Sa | Su | Mo |
|---|---|---|---|---|---|---|---|---|---|
| Akitaken Tazawako Kogen | 27cm | 31cm | |||||||
| Hachimantai Resort | 10cm | 15cm | |||||||
| Shizukuishi | - | 5cm | |||||||
| Amihari | - | 3cm |
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.
Understanding and predicting Snow Conditions in Hachimantai
Here are our tips for making the most of a trip to Hachimantai, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Hachimantai, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Hachimantai is uncontrolled and un-marked slopes are not made safe (from avalanche risk) or patrolled. Always check local advice, know the Avalanche Risk Level, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Hachimantai will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Hachimantai for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.