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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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Hiraya Kogen Akasaka at 990 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 18 Dec 2025
Now
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  |  | |  |  |  | | | | | |  | |
clear | some clouds | clear | some clouds | mod. rain | cloudy | rain shwrs | mod. rain | light rain | mod. rain | rain shwrs | clear | clear | some clouds | some clouds | some clouds | clear | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | 6 | — | 2 | 10 | 2 | 6 | 1 | — | — | — | — | — | — | |
max °C | 5 | 3 | 7 | 8 | 8 | 10 | 11 | 11 | 10 | 10 | 9 | 5 | 6 | 2 | 6 | 5 | 3 |
min °C | 3 | 2 | 5 | 6 | 6 | 9 | 10 | 10 | 10 | 10 | 5 | 5 | 3 | 2 | 4 | 4 | 3 |
1 | 0 | 4 | 4 | 4 | 7 | 9 | 8 | 9 | 8 | 2 | 2 | 3 | 1 | 4 | 4 | 2 | |
43 | 87 | 58 | 71 | 90 | 93 | 84 | 95 | 91 | 99 | 85 | 49 | 65 | 81 | 64 | 80 | 76 | |
1750 | 1450 | 2200 | 2400 | 2500 | 2600 | 2700 | 2900 | 2950 | 2900 | 2500 | 2100 | 1850 | 1500 | 1750 | 1800 | 1800 | |
 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | 4:38 | — | — | 4:38 | — | — | 4:39 | — | — | 4:39 | — | — | 4:40 | — | — | 4:40 | — |
Next 0-3 days weather summary:
Heavy rain (total 20.0mm), heaviest during Fri night. Very mild (max 11°C on Sat afternoon, min 2°C on Thu night). Wind will be generally light.
Next 4-6 days weather summary:
Light rain (total 7.0mm), mostly falling on Sun afternoon. Very mild (max 10°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.
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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: | 14 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
Snow History
Week 3 of December has on average:
0.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.4 | Powder days Fresh snow, limited sun, any wind. |
1.3 | 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 (3) / good piste (3)
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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