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Japan Weekly Snow Roundup #292
Weekly Snow News for Japan, updated 10 December 2025: early-season bases deepen rapidly as Siberian air drives repeated snow across Hokkaido and Honshu
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Osorakan at 1346 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 11 Dec 2025
Now
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  | | | | | |  | | | | |
rain shwrs | snow shwrs | snow shwrs | clear | clear | some clouds | cloudy | light snow | snow shwrs | snow shwrs | snow shwrs | snow shwrs | clear | some clouds | clear | some clouds | snow shwrs | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | 4 | 3 | — | 1 | — | — | — | — | — | — | |
1 | 1 | — | — | — | — | — | 15 | — | — | — | — | — | — | — | — | — | |
max °C | 5 | 2 | -4 | -3 | 0 | 2 | 2 | 3 | -4 | -4 | -4 | -4 | -3 | -1 | 0 | 1 | 2 |
min °C | 4 | -4 | -5 | -4 | -2 | 1 | 2 | 0 | -4 | -4 | -5 | -4 | -3 | -2 | -1 | 1 | 1 |
-2 | -12 | -14 | -11 | -7 | -4 | -2 | -8 | -14 | -14 | -15 | -13 | -10 | -8 | -8 | -5 | -6 | |
87 | 92 | 86 | 79 | 28 | 74 | 92 | 100 | 86 | 90 | 89 | 87 | 90 | 41 | 94 | 90 | 96 | |
2200 | 1400 | 750 | 900 | 750 | 1700 | 1750 | 2000 | 900 | 850 | 750 | 850 | 1000 | 1000 | 1200 | 1450 | 1500 | |
 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — |
 | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — |
Next 0-3 days weather summary:
Mild with moderate rain (total 17.0mm) on Sat night, Becoming colder with a light covering of snow, mostly falling on Sat night. Freeze-thaw conditions (max 5°C on Thu afternoon, min -5°C on Fri morning). Winds increasing (light winds from the S on Fri night, gales from the WNW by Sun morning).
Next 4-6 days weather summary:
A dusting of new snow. Freeze-thaw conditions (max 2°C on Tue night, min -5°C on Sun night). Winds decreasing (near gales from the NW on Sun afternoon, light winds from the W by Mon night).
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Snow Radar
Latest snow reports near Osorakan:
Osorakan Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
Snow History
Week 2 of December has on average:
0.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
1.3 | Bluebird days Average snow, mostly sunny, light wind. |
Osorakan Forecast Snowfall
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Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Osorakan at the specific elevation of 1346 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osorakan. 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.
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