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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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Chateau Shiozawa at 579 m altitude
Issued by Snow-Forecast.com at: 8 pm (local time) / 18 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | | |  |  |  |  |  | | | | | | |
clear | clear | clear | clear | clear | clear | some clouds | some clouds | mod. rain | light snow | light snow | light snow | clear | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | 6 | 12 | — | — | — | — | — | — | |
max °C | 0 | 8 | 8 | 6 | 12 | 12 | 10 | 14 | 10 | 5 | -1 | -1 | -1 | 6 | 6 | 5 |
min °C | -2 | 5 | 5 | 5 | 9 | 9 | 10 | 12 | 7 | 1 | -1 | -2 | -2 | 3 | 3 | 3 |
-2 | 4 | 3 | 3 | 8 | 7 | 9 | 11 | 5 | -3 | -5 | -2 | -2 | 3 | 0 | 0 | |
65 | 56 | 63 | 61 | 71 | 75 | 71 | 73 | 96 | 96 | 95 | 88 | 70 | 47 | 54 | 63 | |
0 | 2000 | 2450 | 2600 | 2550 | 2700 | 3000 | 2850 | 2650 | 1050 | 450 | 450 | 0 | 1600 | 1950 | 2300 | |
 | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — |
Next 0-3 days weather summary:
Light rain (total 6.0mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 14°C on Sun morning, min -2°C on Thu night). Wind will be generally light.
Next 4-6 days weather summary:
Moderate rain (total 14.0mm) heaviest on Sun night, then becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 8°C on Wed morning, min -2°C on Mon afternoon). Wind will be generally light.
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Latest snow reports near Chateau Shiozawa:
10 km away from Chateau Shiozawa
15 hours ago
It is snowing steadily in Ishiuchi Maruyama. from Ishiuchi Maruyama
Chateau Shiozawa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 6 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.9 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
Chateau Shiozawa Forecast Snowfall
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Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Chateau Shiozawa at the specific elevation of 579 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Chateau Shiozawa. 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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