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A decade-old plan to build the UK’s new longest indoor ski slope have been approved, apparently meaning construction can now finally go ahead.
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Happo One at 1831 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 09 Jan 2026
Now
Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  |  |  | | |  | |  |  | | |  | | | |
clear | clear | some clouds | clear | some clouds | heavy snow | heavy snow | heavy snow | heavy snow | snow shwrs | clear | snow shwrs | light snow | heavy snow | heavy snow | mod. snow | mod. snow | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | 19 | 12 | 19 | 27 | — | — | — | 3 | 16 | 14 | 6 | 6 | 1 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -7 | -7 | -7 | -2 | -2 | -4 | -12 | -14 | -15 | -10 | -8 | -5 | -5 | -8 | -12 | -11 | -11 | -9 |
min °C | -10 | -8 | -7 | -4 | -3 | -9 | -13 | -14 | -15 | -12 | -9 | -8 | -5 | -11 | -13 | -12 | -11 | -11 |
-16 | -13 | -13 | -11 | -12 | -18 | -27 | -29 | -30 | -21 | -17 | -16 | -14 | -21 | -22 | -20 | -19 | -20 | |
58 | 62 | 48 | 32 | 47 | 94 | 87 | 92 | 93 | 78 | 65 | 68 | 89 | 92 | 92 | 91 | 87 | 71 | |
0 | 700 | 0 | 1000 | 1600 | 1150 | 200 | 0 | 0 | 0 | 550 | 0 | 1000 | 750 | 0 | 150 | 350 | 0 | |
 | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — |
 | — | 4:49 | — | — | 4:50 | — | — | 4:51 | — | — | 4:52 | — | — | 4:52 | — | — | 4:53 | — |
Next 0-3 days weather summary:
A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -2°C on Sat morning, min -15°C on Sun night). Winds increasing (light winds from the W on Fri afternoon, gales from the W by Sun afternoon).
Next 4-6 days weather summary:
A heavy fall of snow, heaviest during Tue afternoon. Temperatures will be below freezing (max -5°C on Mon night, min -13°C on Tue night). Winds decreasing (strong winds from the SW on Mon night, light winds from the W by Wed morning).
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Latest snow reports near Happo One:
41 km away from Happo One
5 hours ago
Snowing at a moderate rate in Tangram Ski Circus. from Tangram Ski Circus
- 23 hours ago
Snow is falling at Happo One. from Happo One
Happo One Snow Conditions
| Top snow depth: | 240 cm |
|---|---|
| Bottom snow depth: | 54 cm |
| Fresh snowfall depth: | 39 cm |
| Last snowfall: | 8 Jan 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (2) / good piste (2)
Snow History
Week 2 of January has on average:
1.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
3.2 | Powder days Fresh snow, limited sun, any wind. |
1.1 | 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 (2) / good piste (2)
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 3.9 Based on 31 votes and 27 reviews
- Snowsure
- Variety of pistes
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- 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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