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Japan Weekly Snow Roundup #293
Weekly Snow News for Japan, updated 17 December 2025: Siberian cold fuels relentless powder storms, with Hokkaido leading Japan’s mid-winter surge.
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Happo One at 760 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | | |  |  |  |  |  | | |  | |  | |
snow shwrs | some clouds | clear | some clouds | some clouds | rain shwrs | some clouds | some clouds | some clouds | cloudy | light rain | mod. rain | light snow | snow shwrs | clear | clear | some clouds | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | |
— | — | — | — | — | 1 | — | — | — | — | 5 | 10 | — | — | — | — | — | — | |
max °C | 2 | 1 | -3 | 6 | 6 | 5 | 9 | 9 | 6 | 11 | 9 | 5 | 2 | 2 | -2 | 6 | 6 | 3 |
min °C | 0 | -5 | -5 | 4 | 1 | 0 | 7 | 4 | 5 | 8 | 6 | 2 | 2 | -2 | -3 | 3 | 2 | 1 |
-2 | -5 | -5 | 3 | -1 | -2 | 6 | 3 | 3 | 7 | 5 | 0 | 0 | -2 | -3 | 1 | 0 | -2 | |
88 | 87 | 59 | 53 | 70 | 55 | 90 | 86 | 71 | 83 | 96 | 99 | 98 | 88 | 82 | 64 | 76 | 84 | |
700 | 950 | 350 | 2050 | 2450 | 2450 | 2400 | 2550 | 2650 | 2700 | 2450 | 1300 | 950 | 1000 | 700 | 1400 | 2050 | 1350 | |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 4:34 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:36 | — | — | 4:36 | — |
Next 0-3 days weather summary:
Some drizzle, heaviest during Fri night. Freeze-thaw conditions (max 9°C on Sat morning, min -5°C on Thu afternoon). Wind will be generally light.
Next 4-6 days weather summary:
Moderate rain (total 15.0mm), heaviest on Sun night. Freeze-thaw conditions (max 11°C on Sun morning, min -3°C on Mon night). Wind will be generally light.
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Latest snow reports near Happo One:
27 km away from Happo One
53 minutes ago
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
27 km away from Happo One
4 hours agoModerate 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
Happo One Snow Conditions
| Top snow depth: | 115 cm |
|---|---|
| Bottom snow depth: | 54 cm |
| Fresh snowfall depth: | 8 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (2) / good piste (2)
Snow History
Week 3 of December has on average:
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.6 | Powder days Fresh snow, limited sun, any wind. |
0.1 | 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 760 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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- Yoshi from Japan writes:
It is not raining at all. [note from the editor: thank you for submitting your weather observations. You may like to become an Eyeball Reporter, via Twitter. This review will remain in place for a short time.}
Visitor Reviews of Happo One
Yoshi from Japan writes:
It is not raining at all.
[note from the editor: thank you for submitting your weather observations. You may like to become an Eyeball Reporter, via Twitter. This review will remain in place for a short time.}
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