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Happo One Weather (Next 3 days): The snow forecast for Happo One is: A light fall of snow, heaviest on Wed afternoon. Turning milder with light rain (total 5.0mm) on Wed night. Freeze-thaw conditions (max 3°C on Wed night, min -8°C on Mon afternoon). Wind will be generally light.
Happo One Weather (Days 4-6): A heavy fall of snow, heaviest during Fri morning. Temperatures will be below freezing (max -1°C on Thu morning, min -15°C on Fri night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 1.2 m | -6 |  | |||
| Middle Lift: | -4 | | ||||
| Bottom Lift: | 0.5 m | 1 | |
Latest snow reports near Happo One:
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
Moderate to heavy freezing rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
| |  |  | |  | |  |  | |  |  |  | | |  |  |  | |
light snow | light snow | clear | clear | clear | snow shwrs | light snow | mod. snow | light snow | light snow | snow shwrs | heavy snow | heavy snow | heavy snow | snow shwrs | some clouds | cloudy | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
2 | — | — | — | — | 1 | 1 | 9 | 2 | 1 | — | 10 | 18 | 12 | 3 | — | — | — | |
— | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | |
max °C | -6 | -6 | -5 | -1 | 0 | 0 | 1 | 2 | 3 | -1 | -1 | -3 | -10 | -13 | -14 | -9 | -9 | -8 |
min °C | -6 | -8 | -8 | -3 | -1 | -1 | 0 | 1 | 0 | -1 | -2 | -9 | -12 | -14 | -15 | -11 | -10 | -10 |
-11 | -8 | -11 | -6 | -5 | -6 | -5 | -4 | -2 | -4 | -7 | -15 | -20 | -22 | -24 | -17 | -15 | -14 | |
76 | 72 | 58 | 42 | 55 | 83 | 94 | 98 | 98 | 93 | 78 | 92 | 92 | 86 | 78 | 53 | 60 | 46 | |
700 | 800 | 0 | 1200 | 1900 | 1850 | 2000 | 2100 | 2300 | 1700 | 1600 | 1150 | 500 | 0 | 0 | 0 | 450 | 0 | |
 | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | 4:36 | — | — | 4:36 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:38 | — |
A light fall of snow, heaviest on Wed afternoon. Turning milder with light rain (total 5.0mm) on Wed night. Freeze-thaw conditions (max 3°C on Wed night, min -8°C on Mon afternoon). Wind will be generally light.
A heavy fall of snow, heaviest during Fri morning. Temperatures will be below freezing (max -1°C on Thu morning, min -15°C on Fri night). Wind will be generally light.
Latest snow reports near Happo One:
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
Moderate to heavy freezing rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
| Top snow depth: | 115 cm |
|---|---|
| Bottom snow depth: | 48 cm |
| Fresh snowfall depth: | 9 cm |
| Last snowfall: | 21 Dec 2025 |
| Snow Alerts | Create Alert |
1.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.7 | Powder days Fresh snow, limited sun, any wind. |
1.2 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Happo One at the specific elevation of 1831 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Happo One. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
Overall 3.9 Based on 31 votes and 27 reviews
Unfortunately, 2019/20 is shaping up as the worst season in decades. Happo is a great mountain, but unfortunately, snow conditions are just like back home, icy at the top and wet muck from the middle to bottom, with that famous Japan powder, just something others talk about.
Mick from Australia writes:
Unfortunately, 2019/20 is shaping up as the worst season in decades.
Happo is a great mountain, but unfortunately, snow conditions are just like back home, icy at the top and wet muck from the middle to bottom, with that famous Japan powder, just something others talk about.
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