Happo One Snow Report and Forecast
Snow Forecast for Happo One
This is the Snow and Weather for Happo One from 18 January.
Updated 18 January 2026 11:08 UTC.
For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Happo One.
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.
Happo One Snow Forecast Highlights
When will there be fresh snow in Happo One?
| Next Snow Expected | 19 January |
|---|---|
| Next Snow Amount | 1cm - |
| Next 48 Hours | 6cm 2in |
| Next 7 Days | 17cm 7in |
Forecast for today in Happo One
Max 2℃ 35°F
Min -7℃ 19°F
Freeze-thaw conditions, with valley temperatures cooling to -7℃ 19°F and rising to 2℃ 35°F
Temperature at BaseTemp at Base
Sun
18
Snow unlikely
Clear sky early, then fair later.
Forecast times for Happo One are in Tokyo (Asia/Tokyo) time zone.
Happo One has up to 17cm 7in new snow forecast in the next 7 days.*
JMA - at altitude
Happo One Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
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Happo One 7-Day Snow Forecast Overview
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| Sun 18 | Mon 19 | Tue 20 | Wed 21 | Thu 22 | Fri 23 | Sat 24 | |
|---|---|---|---|---|---|---|---|
| Wind | NW F3 | ||||||
| 1,831m 6,007ft | 2℃ 35°F
| 4℃ 38°F
 +1cm
| -1℃ 30°F
 +5cm +2in
| -3℃ 26°F
+5cm +2in
| -4℃ 24°F
+3cm +1in
| 0℃ 32°F
| -1℃ 29°F
 +3cm +1in
|
| NW F3 | |||||||
| 1,296m 4,250ft | 2℃ 35°F
| 4℃ 38°F
+1cm
| -1℃ 30°F
+5cm +2in
| -3℃ 26°F
+5cm +2in
| -4℃ 24°F
+3cm +1in
| 0℃ 32°F
| -1℃ 29°F
+3cm +1in
|
| NW F3 | |||||||
| 760m 2,493ft | 2℃ 35°F
| 4℃ 38°F
+1cm
| -1℃ 30°F
+5cm +2in
| -3℃ 26°F
+5cm +2in
| -4℃ 24°F
+3cm +1in
| 0℃ 32°F
| -1℃ 29°F
+3cm +1in
|
| Snow Line | 760m 2,493ft | 760m 2,493ft | 760m 2,493ft | 760m 2,493ft | 760m 2,493ft | 760m 2,493ft | |
| Max Town | 2℃ 35°F | 4℃ 38°F | -1℃ 30°F | -3℃ 26°F | -4℃ 24°F | 0℃ 32°F | -1℃ 29°F |
| Min Town | -7℃ 19°F | -6℃ 20°F | -11℃ 12°F | -11℃ 11°F | -11℃ 12°F | -12℃ 10°F | -8℃ 18°F |
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.
Snow Forecast near Happo One
| Ski Area | 48 Hr | 7 Day | Su | Mo | Tu | We | Th | Fr | Sa |
|---|---|---|---|---|---|---|---|---|---|
| Myoko Akakura / Shinakakura | 6cm 2in | 84cm 33in | |||||||
| Myoko Pine Valley | 7cm 3in | 83cm 33in | |||||||
| Myoko Suginohara | 6cm 2in | 88cm 35in | |||||||
| Myoko Ikenotaira | 4cm 1in | 72cm 28in | |||||||
| Hakuba Norikura | 2cm 1in | 81cm 32in | |||||||
| Tsugaike Kogen | 2cm 1in | 77cm 30in | |||||||
| Hakuba 47 | 5cm 2in | 17cm 7in |
Snow Reliability
Happo One typically enjoys reliable snow conditions, with an average snow depth of 3 to 4 meters during peak season. For the latest snow reports and updates, check J2Ski.
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.