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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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Marunuma Kogen at 1390 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 19 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | |  |  | | | | |  |  | | | |
clear | clear | clear | some clouds | clear | light rain | light rain | light rain | snow shwrs | snow shwrs | clear | clear | some clouds | clear | cloudy | cloudy | light rain | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 1 | |
— | — | — | — | — | 1 | 4 | 2 | — | — | — | — | — | — | — | — | 4 | 4 | |
max °C | 3 | 2 | 1 | 7 | 6 | 5 | 9 | 7 | 1 | -3 | -3 | -5 | 1 | -1 | -1 | 2 | 3 | 3 |
min °C | 0 | -1 | -1 | 5 | 3 | 3 | 6 | 5 | -4 | -4 | -6 | -6 | 0 | -4 | -3 | 1 | 2 | -4 |
-2 | -4 | -4 | 2 | 0 | 0 | 4 | 3 | -10 | -9 | -9 | -8 | 0 | -8 | -7 | -4 | -2 | -9 | |
43 | 60 | 49 | 52 | 89 | 84 | 92 | 89 | 91 | 77 | 72 | 49 | 28 | 71 | 81 | 95 | 98 | 94 | |
1500 | 2100 | 2500 | 2500 | 2650 | 2850 | 2900 | 2850 | 1350 | 700 | 850 | 450 | 1450 | 1200 | 1100 | 2400 | 2200 | 1400 | |
 | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 4:28 | — | — | 4:29 | — | — | 4:29 | — | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — |
Next 0-3 days weather summary:
Light rain (total 7.0mm) at first, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 9°C on Sun morning, min -4°C on Sun night). Wind will be generally light.
Next 4-6 days weather summary:
Light rain (total 8.0mm), mostly falling on Wed night. Freeze-thaw conditions (max 3°C on Wed afternoon, min -6°C on Mon afternoon). Wind will be generally light.
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Latest snow reports near Marunuma Kogen:
50 km away from Marunuma Kogen
45 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
Marunuma Kogen Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| 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:
1.7 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
0.8 | Bluebird days Average snow, mostly sunny, light wind. |
Marunuma Kogen 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 Marunuma Kogen at the specific elevation of 1390 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Marunuma Kogen. 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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