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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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Karuizawa Snow Park at 1400 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  | |  |  |  |  |  | | | | |  | |
clear | clear | clear | clear | clear | light rain | some clouds | clear | some clouds | cloudy | light rain | light snow | snow shwrs | some clouds | clear | clear | some clouds | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | 1 | — | — | — | — | 1 | 1 | — | — | — | — | — | — | |
max °C | -2 | -2 | 0 | 3 | 3 | 6 | 6 | 6 | 7 | 8 | 9 | 3 | -2 | -2 | -2 | -1 | -1 | -2 |
min °C | -4 | -3 | -2 | 1 | 3 | 4 | 5 | 6 | 7 | 7 | 6 | -1 | -2 | -3 | -3 | -2 | -3 | -3 |
-10 | -6 | -4 | -1 | 1 | 1 | 2 | 4 | 4 | 5 | 4 | -6 | -7 | -6 | -3 | -2 | -7 | -8 | |
75 | 75 | 61 | 46 | 50 | 49 | 88 | 86 | 81 | 84 | 77 | 96 | 97 | 82 | 74 | 76 | 73 | 95 | |
900 | 1100 | 950 | 1750 | 2350 | 2550 | 2400 | 2600 | 2900 | 2950 | 2750 | 1850 | 1050 | 1200 | 900 | 1100 | 1350 | 900 | |
 | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 4:31 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — | — | 4:34 | — |
Next 0-3 days weather summary:
Some drizzle, heaviest during Fri night. Freeze-thaw conditions (max 7°C on Sat night, min -4°C on Thu morning). Wind will be generally light.
Next 4-6 days weather summary:
Light rain (total 2.0mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 9°C on Sun afternoon, min -3°C on Mon afternoon). Wind will be generally light.
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Latest snow reports near Karuizawa Snow Park:
44 km away from Karuizawa Snow Park
25 hours ago
No clouds over Naeba today. No wind here. Temperatures are around freezing. A dusting of new snow. Only some lifts are open. from Naeba
Karuizawa Snow Park Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 1.0 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Gunma are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.7 | Powder days Fresh snow, limited sun, any wind. |
1.7 | Bluebird days Average snow, mostly sunny, light wind. |
Karuizawa Snow Park Forecast Snowfall
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Other resorts in Japan - Gunma are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Karuizawa Snow Park at the specific elevation of 1400 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Karuizawa Snow 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.
Visitor Reviews of Karuizawa Snow Park
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