Happo One Snow Report and Forecast
Snow Forecast for Happo One
When will there be fresh snow?
This is the Snow Forecast for Happo One, Japan for 16 days from 15 April.
Updated 16 April 2025 06:30 NZST.
| Next Snow Expected | 15 April |
|---|---|
| Next Snow Amount | 14cm |
| Next 48 Hours | 14cm |
| Next 7 Days | 14cm |
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For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Happo One.
Forecast for today in Happo One
Max 7℃
Min -3℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -3℃ and rising to 7℃
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Tue
15
up to 14cm New Snow
Light drizzle, cloudy, clear spells later.
Snow Line from 1,289m to 779m, with rain below.
Powder Alert!
Updated 16 April 2025 06:39 NZST
Powder Possible :- 14cm of Fresh Snow is forecast for Happo One over the next 2 days.
To get Powder Alerts and Snow Storm Early Warnings by e-mail, Subscribe to our Snow Mail.
Happo One Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
Happo One 7-Day Snow Forecast Overview
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| Tue 15 | Wed 16 | Thu 17 | Fri 18 | Sat 19 | Sun 20 | Mon 21 | |
|---|---|---|---|---|---|---|---|
| Wind | W F4 | W F4 | SW F2 | SW F2 | SW F3 | SW F2 | |
| 1,831m | 7℃
 +14cm
| 10℃
 | 15℃
 | 16℃
 | 12℃
| 8℃
 | 11℃
|
| W F4 | W F4 | SW F3 | SW F3 | SW F2 | |||
| 1,296m | 7℃
+14cm
| 10℃
| 15℃
| 16℃
| 14℃
| 12℃
| 12℃
|
| W F4 | W F4 | ||||||
| 760m | 7℃
| 10℃
| 15℃
| 16℃
| 21℃
| 15℃
| 16℃
|
| Snow Line | varying 1,289m | ||||||
| Max Town | 7℃ | 10℃ | 15℃ | 16℃ | 21℃ | 15℃ | 16℃ |
| Min Town | -3℃ | 2℃ | 7℃ | 10℃ | 8℃ | 8℃ | 2℃ |
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.
Happo One 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 7℃
Min -3℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -3℃ and rising to 7℃
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Tue
15
up to 14cm New Snow
Light drizzle, cloudy, clear spells later.
Snow Line from 1,289m to 779m, with rain below.
Max 10℃
Min 2℃
Valley temperatures from an overnight low of 2℃ to daytime highs around 10℃
Temperature at BaseTemp at Base
Wed
16
Snow unlikely
Light drizzle early, then clear sky later.
Max 15℃
Min 7℃
Valley temperatures from an overnight low of 7℃ to daytime highs around 15℃
Temperature at BaseTemp at Base
Thu
17
Snow unlikely
Clear sky, clear spells, clear sky later.
Max 16℃
Min 10℃
Valley temperatures from an overnight low of 10℃ to daytime highs around 16℃
Temperature at BaseTemp at Base
Fri
18
Snow unlikely
Fair first, light drizzle then rain showers, cloudy later.
Max 21℃
Min 8℃
Valley temperatures from an overnight low of 8℃ to daytime highs around 21℃
Temperature at BaseTemp at Base
Sat
19
Snow unlikely
Fair early, then cloudy later.
Max 15℃
Min 8℃
Valley temperatures from an overnight low of 8℃ to daytime highs around 15℃
Temperature at BaseTemp at Base
Sun
20
Snow unlikely
Light rain, thunderstorms, clear spells later.
Max 16℃
Min 2℃
Valley temperatures from an overnight low of 2℃ to daytime highs around 16℃
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Fair early, then fog later.
This Snow Forecast for Happo One, 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 Happo One, 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.
Happo One Snow Forecast updated at 06:30 NZST, next update expected 09:00 NZST.
Snow Forecast near Happo One
| Snow Report and Forecast | 48 Hr | Tue | Wed | Thu | Fri | Sat | Sun | Mon | 7 Day |
|---|---|---|---|---|---|---|---|---|---|
| Hakuba 47 | 11cm | 11cm | |||||||
| Hakuba Norikura | 1cm | 1cm | |||||||
| Tsugaike Kogen | 1cm | 1cm |
Understanding and predicting Snow Conditions in Happo One
Here are our tips for making the most of a trip to Happo One, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Happo One, 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 Happo One 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 Happo One 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 Happo One 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.