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Happo One at 1831 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 19 Sep 2026
Next 3 days weather summary:Heavy rain (total 23.0mm), heaviest during Mon night. Very mild (max 17°C on Sat afternoon, min 12°C on Tue morning). Wind will be generally light. | Days 4-6 weather summary:Light rain (total 4.0mm), mostly falling on Thu afternoon. Very mild (max 15°C on Wed morning, min 10°C on Tue night). Wind will be generally light. | ||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | |  | |  | |  |  |  | |  | | |  | |
rain shwrs | rain shwrs | rain shwrs | rain shwrs | rain shwrs | light rain | light rain | mod. rain | rain shwrs | some clouds | clear | clear | clear | some clouds | some clouds | rain shwrs | light rain | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 2 | 3 | 2 | 2 | 1 | 2 | 2 | 6 | 3 | — | — | — | — | — | — | 2 | 1 |
max °C | 17 | 15 | 15 | 16 | 14 | 16 | 16 | 15 | 13 | 13 | 11 | 15 | 15 | 13 | 15 | 15 | 13 |
min °C | 16 | 14 | 15 | 15 | 14 | 15 | 15 | 14 | 12 | 11 | 10 | 13 | 13 | 12 | 12 | 14 | 12 |
chill °C | 16 | 14 | 15 | 15 | 13 | 15 | 15 | 13 | 11 | 10 | 10 | 13 | 13 | 12 | 12 | 14 | 11 |
Humid % | 77 | 88 | 91 | 86 | 91 | 95 | 98 | 94 | 82 | 61 | 52 | 49 | 58 | 73 | 81 | 80 | 94 |
Freeze m | 4750 | 4700 | 4600 | 4850 | 5250 | 5100 | 5200 | 5150 | 4900 | 4850 | 4800 | 4500 | 4300 | 4250 | 4000 | 4300 | 4250 |
 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — |
 | 5:51 | — | — | 5:49 | — | — | 5:47 | — | — | 5:45 | — | — | 5:45 | — | — | 5:43 | — |
Days 7-16 weather summary:
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Avalanche information: Japan Avalanche Network
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Latest snow reports near Happo One:
Happo One Snow Conditions
| Top snow depth: | 0 cm |
|---|---|
| Bottom snow depth: | 0 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 7 Apr 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
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Snow History
Week 3 of September has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Happo One Forecast Snowfall
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Photos of Happo One
Hakuba Japan by Chris Hocking
The day Happo One by Denis Akira Hayashihara
zoio Happo One by Denis Akira H
Upload new photo Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
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.
Visitor Reviews of Happo One
Overall 3.8 Based on 42 votes and 27 reviews
- Snowsure
- Variety of pistes
- Vote
- 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.
Visitor Reviews of Happo One
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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