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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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Hiraya Kogen Akasaka at 990 m altitude
Issued by Snow-Forecast.com at: 8 pm (local time) / 10 Dec 2025
Now
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  | |  |  | |  |  |  |  | | | | |
cloudy | cloudy | cloudy | rain shwrs | clear | clear | some clouds | some clouds | clear | light rain | heavy rain | snow shwrs | clear | clear | clear | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 1 | — | — | — | — | — | 3 | 19 | 1 | — | — | — | — | |
max °C | 3 | 5 | 5 | 4 | -1 | 0 | -1 | 3 | 4 | 5 | 7 | 2 | -1 | 0 | 1 | -1 |
min °C | 2 | 4 | 4 | -2 | -2 | -2 | -2 | 1 | 2 | 3 | 5 | 1 | -2 | -1 | -1 | -2 |
0 | 1 | 0 | -10 | -9 | -6 | -2 | -2 | 0 | 0 | 0 | -6 | -8 | -5 | -6 | -6 | |
50 | 51 | 76 | 95 | 47 | 29 | 70 | 72 | 66 | 81 | 98 | 98 | 82 | 63 | 52 | 49 | |
1750 | 1700 | 1650 | 1550 | 700 | 1000 | 250 | 1100 | 1450 | 1900 | 2650 | 1350 | 650 | 850 | 1150 | 450 | |
 | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — |
 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — |
Next 0-3 days weather summary:
Some drizzle, heaviest during Thu night. Freeze-thaw conditions (max 5°C on Thu morning, min -2°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu night, calm by Fri night).
Next 4-6 days weather summary:
Heavy rain (total 23.0mm), heaviest during Sun morning. Freeze-thaw conditions (max 7°C on Sun morning, min -2°C on Sun night). Winds decreasing (strong winds from the NW on Sun afternoon, calm by Mon night).
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Latest snow reports near Hiraya Kogen Akasaka:
Hiraya Kogen Akasaka Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 3 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (2) / good piste (2)
Snow History
Week 2 of December has on average:
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.1 | Powder days Fresh snow, limited sun, any wind. |
0.5 | Bluebird days Average snow, mostly sunny, light wind. |
Hiraya Kogen Akasaka Forecast Snowfall
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Other resorts in Japan - Nagano are reporting: powder (2) / good piste (2)
The above table gives the weather forecast for Hiraya Kogen Akasaka at the specific elevation of 990 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Hiraya Kogen Akasaka. 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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