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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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Joetsu Kokusai at 1017 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 | mod. snow | light snow | light snow | clear | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | 7 | 4 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | |
max °C | 0 | 6 | 7 | 6 | 10 | 10 | 10 | 11 | 8 | 2 | -4 | -5 | -1 | 4 | 4 | 5 |
min °C | -2 | 4 | 5 | 5 | 8 | 9 | 9 | 11 | 5 | -3 | -4 | -5 | -4 | 2 | 3 | 3 |
-4 | 2 | 3 | 3 | 6 | 6 | 7 | 9 | 2 | -9 | -10 | -10 | -4 | 1 | 0 | 0 | |
55 | 42 | 45 | 45 | 67 | 72 | 57 | 68 | 97 | 98 | 97 | 93 | 52 | 33 | 42 | 47 | |
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 | — | — | 4:31 | — |
Next 0-3 days weather summary:
Light rain (total 6.0mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 11°C on Sun morning, min -2°C on Thu night). Wind will be generally light.
Next 4-6 days weather summary:
A light fall of snow, heaviest on Sun night. Turning milder with light rain (total 2.0mm) on Wed afternoon. Freeze-thaw conditions (max 6°C on Wed morning, min -5°C on Mon afternoon). Winds increasing (calm on Mon night, fresh winds from the SSE by Wed morning).
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Latest snow reports near Joetsu Kokusai:
7 km away from Joetsu Kokusai
17 hours ago
It is snowing steadily in Ishiuchi Maruyama. from Ishiuchi Maruyama
Joetsu Kokusai Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 14 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:
0.7 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.7 | Powder days Fresh snow, limited sun, any wind. |
0.3 | Bluebird days Average snow, mostly sunny, light wind. |
Joetsu Kokusai Forecast Snowfall
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Upload new photo Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Joetsu Kokusai at the specific elevation of 1017 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Joetsu Kokusai. 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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