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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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Koba World at 430 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 | snow shwrs | light snow | some clouds | cloudy | mod. rain | mod. snow | light snow | snow shwrs | light snow | snow shwrs | clear | clear | some clouds | cloudy | light rain | heavy rain | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | 6 | 2 | 1 | 2 | — | — | — | — | — | — | — | — | |
— | — | 3 | — | — | 7 | — | — | — | — | — | — | — | — | — | 5 | 15 | 3 | |
max °C | -1 | -1 | 5 | 6 | 5 | 6 | 2 | 1 | -3 | -4 | -5 | -6 | -2 | -2 | 2 | 4 | 6 | 7 |
min °C | -3 | -1 | 0 | 5 | 5 | 2 | 1 | -1 | -6 | -5 | -7 | -7 | -4 | -3 | -3 | 3 | 6 | -6 |
-6 | -4 | -5 | 2 | 1 | -1 | -2 | -5 | -13 | -11 | -12 | -11 | -7 | -7 | -8 | -2 | 1 | -13 | |
68 | 75 | 97 | 91 | 93 | 99 | 99 | 98 | 84 | 89 | 71 | 77 | 70 | 67 | 81 | 92 | 95 | 86 | |
0 | 300 | 1050 | 1300 | 1600 | 1950 | 1900 | 600 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1000 | 1600 | 400 | |
 | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | 4:00 | — | — | 4:01 | — | — | 4:01 | — | — | 4:02 | — | — | 4:02 | — | — | 4:04 | — |
Next 0-3 days weather summary:
Mild with moderate rain (total 10.0mm) on Sat night, Becoming colder with a light covering of snow, mostly falling on Sun morning. Freeze-thaw conditions (max 6°C on Sat morning, min -6°C on Sun night). Wind will be generally light.
Next 4-6 days weather summary:
A dusting of snow. Milder later with heavy rain (total 23.0mm) on Wed afternoon. Freeze-thaw conditions (max 7°C on Wed night, min -7°C on Mon afternoon). Winds increasing (calm on Tue morning, strong winds from the SW by Wed night).
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Latest snow reports near Koba World:
31 km away from Koba World
9 hours ago
Freezing rain reported from Otaru at 26 metres elevation only 3 kms ENE of Otaru Tenguyama but it is forecast cold enough for snow at the ski area from Otaru Tenguyama
31 km away from Koba World
11 hours agoContinuous light snow reported from Otaru at 26 metres elevation only 3 kms ENE of Otaru Tenguyama Ski Resort from Otaru Tenguyama
Koba World Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Hokkaido are reporting: powder (5) / good piste (5)
Snow History
Week 3 of December has on average:
2.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.6 | Powder days Fresh snow, limited sun, any wind. |
1.1 | Bluebird days Average snow, mostly sunny, light wind. |
Koba World Forecast Snowfall
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Other resorts in Japan - Hokkaido are reporting: powder (5) / good piste (5)
The above table gives the weather forecast for Koba World at the specific elevation of 430 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Koba World. 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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