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Happo One Weather (Next 3 days): The snow forecast for Happo One is: A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 4°C on Fri afternoon, min -6°C on Wed night). Wind will be generally light.
Happo One Weather (Days 4-6): Mild with heavy rain (total 20.0mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Mon afternoon. Freeze-thaw conditions (max 5°C on Sat night, min -3°C on Mon afternoon). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 1.3 m | -5 |  | |||
| Middle Lift: | -3 | | ||||
| Bottom Lift: | 0.6 m | -1 | |
Latest snow reports near Happo One:
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
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  |  |  |  |  | |  |  |  | | |  |  | |
snow shwrs | cloudy | light snow | heavy snow | snow shwrs | some clouds | clear | clear | clear | some clouds | light rain | rain shwrs | some clouds | light rain | mod. rain | light snow | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
2 | — | 4 | 12 | — | — | — | — | — | — | — | — | — | — | — | 2 | |
— | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 1 | 9 | 8 | |
max °C | -4 | -2 | -2 | -4 | -5 | -5 | 0 | 3 | 4 | 4 | 3 | 3 | 5 | 5 | 5 | 3 |
min °C | -5 | -3 | -3 | -6 | -6 | -6 | -4 | 2 | 4 | 3 | 3 | 3 | 4 | 5 | 4 | -2 |
-9 | -8 | -8 | -11 | -11 | -11 | -8 | -1 | 1 | 0 | -1 | -1 | 0 | 2 | 1 | -4 | |
91 | 75 | 92 | 97 | 74 | 76 | 32 | 24 | 35 | 20 | 85 | 94 | 80 | 83 | 93 | 98 | |
850 | 1350 | 1550 | 1050 | 750 | 1000 | 600 | 2250 | 2500 | 2450 | 2400 | 2400 | 2650 | 2700 | 2700 | 1850 | |
 | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | — | 4:34 | — | — | 4:34 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — |
A moderate fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 4°C on Fri afternoon, min -6°C on Wed night). Wind will be generally light.
Mild with heavy rain (total 20.0mm), heaviest during Sun night. Becoming colder with a moderate fall of snow heaviest on Mon afternoon. Freeze-thaw conditions (max 5°C on Sat night, min -3°C on Mon afternoon). Wind will be generally light.
Latest snow reports near Happo One:
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: | 130 cm |
|---|---|
| Bottom snow depth: | 60 cm |
| Fresh snowfall depth: | 37 cm |
| Last snowfall: | 15 Dec 2025 |
| Snow Alerts | Create Alert |
1.7 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.9 | 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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