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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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Asama 2000 Park at 1880 m altitude
Issued by Snow-Forecast.com at: 8 pm (local time) / 17 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | |  | |  |  | |  |  |  | | | |
snow shwrs | clear | clear | clear | clear | clear | light rain | clear | some clouds | some clouds | clear | cloudy | light snow | light snow | light snow | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
3 | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | — | |
— | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | |
max °C | -4 | -4 | -4 | -4 | 1 | 2 | 1 | 4 | 4 | 2 | 7 | 6 | 2 | -3 | -4 | -5 |
min °C | -7 | -5 | -7 | -6 | -1 | -1 | -1 | 2 | 2 | 2 | 4 | 3 | -3 | -3 | -5 | -6 |
-16 | -12 | -13 | -11 | -4 | -5 | -6 | -3 | -3 | -3 | 0 | -1 | -8 | -7 | -9 | -10 | |
89 | 70 | 66 | 52 | 35 | 41 | 42 | 84 | 77 | 72 | 75 | 82 | 97 | 98 | 96 | 76 | |
900 | 800 | 1000 | 950 | 1900 | 2400 | 2600 | 2500 | 2550 | 2900 | 3050 | 2850 | 1950 | 1150 | 1100 | 700 | |
 | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — |
 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — | — | 4:34 | — |
Next 0-3 days weather summary:
A dusting of snow on Wed night. Freezing level rising with drizzle on Fri night. Freeze-thaw conditions (max 4°C on Sat morning, min -7°C on Wed night). Winds decreasing (fresh winds from the WNW on Wed night, light winds from the SW by Fri afternoon).
Next 4-6 days weather summary:
A dusting of new snow. Freeze-thaw conditions (max 7°C on Sun morning, min -6°C on Mon night). Wind will be generally light.
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Latest snow reports near Asama 2000 Park:
44 km away from Asama 2000 Park
4 hours ago
Rain and snow or hail reported from Suwa at 762 metres elevation 7 kms SSW of Kirigamine Ski Resort from Kirigamine
45 km away from Asama 2000 Park
4 hours agoRain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
45 km away from Asama 2000 Park
5 hours agoContinuous light 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
Asama 2000 Park Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 15 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. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
2.0 | Bluebird days Average snow, mostly sunny, light wind. |
Asama 2000 Park 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 Asama 2000 Park at the specific elevation of 1880 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Asama 2000 Park. 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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