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Japan Weekly Snow Roundup #292
Weekly Snow News for Japan, updated 10 December 2025: early-season bases deepen rapidly as Siberian air drives repeated snow across Hokkaido and Honshu
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Marunuma Kogen at 1390 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 11 Dec 2025
Now
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | | |  | | | | |  | |
some clouds | clear | mod. snow | mod. snow | light snow | snow shwrs | clear | some clouds | light snow | light snow | light snow | mod. snow | snow shwrs | snow shwrs | snow shwrs | clear | clear | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 8 | 5 | 3 | 1 | — | — | 1 | 3 | 2 | 7 | 2 | 3 | 1 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 3 | 3 | -1 | -8 | -8 | -9 | -2 | -2 | 1 | 1 | 1 | -4 | -4 | -5 | -7 | -1 | -1 | -3 |
min °C | 1 | -1 | -8 | -8 | -10 | -10 | -5 | -6 | -6 | 1 | -3 | -6 | -5 | -6 | -8 | -4 | -6 | -5 |
-2 | -6 | -19 | -19 | -18 | -16 | -7 | -10 | -11 | 0 | -11 | -15 | -14 | -14 | -12 | -4 | -6 | -7 | |
58 | 45 | 86 | 86 | 83 | 84 | 62 | 62 | 96 | 100 | 97 | 86 | 82 | 84 | 87 | 55 | 61 | 42 | |
1500 | 1850 | 950 | 0 | 0 | 0 | 500 | 1050 | 1250 | 1950 | 1650 | 650 | 600 | 600 | 0 | 800 | 1150 | 1000 | |
 | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — |
 | — | 4:25 | — | — | 4:25 | — | — | 4:25 | — | — | 4:27 | — | — | 4:27 | — | — | 4:27 | — |
Next 0-3 days weather summary:
A moderate fall of snow, heaviest on Thu night. Freeze-thaw conditions (max 3°C on Thu morning, min -10°C on Fri afternoon). Winds decreasing (near gales from the NW on Fri morning, calm by Sat morning).
Next 4-6 days weather summary:
A moderate fall of snow, heaviest on Sun morning. Freeze-thaw conditions (max 1°C on Sun morning, min -8°C on Mon night). Winds decreasing (near gales from the WNW on Sun night, calm by Tue afternoon).
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Latest snow reports near Marunuma Kogen:
50 km away from Marunuma Kogen
18 hours ago
It is snowing steadily in Naeba. from Naeba
Marunuma Kogen Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 9 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Gunma are reporting: powder (0) / good piste (0)
Snow History
Week 2 of December has on average:
1.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
0.6 | 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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