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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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Asosan at 1050 m altitude
Issued by Snow-Forecast.com at: 8 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 | |
 | |  | |  |  |  |  | |  | | | | |  | | |  | |
some clouds | some clouds | clear | some clouds | cloudy | heavy rain | light rain | rain shwrs | clear | clear | clear | clear | clear | clear | mod. rain | light rain | rain shwrs | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | 11 | 3 | 1 | — | — | — | — | — | — | 8 | 2 | 2 | — | |
max °C | 9 | 9 | 7 | 12 | 12 | 10 | 9 | 7 | 3 | 7 | 7 | 3 | 9 | 10 | 9 | 9 | 5 | 2 |
min °C | 6 | 6 | 6 | 9 | 10 | 9 | 9 | 5 | 1 | 4 | 3 | 2 | 6 | 8 | 8 | 8 | 3 | 1 |
4 | 3 | 3 | 8 | 8 | 6 | 7 | 2 | -3 | 2 | 1 | 0 | 4 | 5 | 4 | 4 | -1 | -4 | |
51 | 73 | 77 | 77 | 78 | 92 | 99 | 96 | 34 | 32 | 37 | 39 | 41 | 78 | 77 | 99 | 97 | 52 | |
2850 | 2850 | 2650 | 2900 | 3050 | 3050 | 2950 | 2600 | 2300 | 2500 | 2450 | 2750 | 2950 | 2900 | 2950 | 2650 | 2850 | 2500 | |
 | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — |
 | — | 5:12 | — | — | 5:12 | — | — | 5:12 | — | — | 5:13 | — | — | 5:13 | — | — | 5:14 | — |
Next 0-3 days weather summary:
Moderate rain (total 15.0mm), heaviest on Sat night. Very mild (max 12°C on Sat morning, min 1°C on Sun night). Wind will be generally light.
Next 4-6 days weather summary:
Moderate rain (total 12.0mm), heaviest on Tue night. Very mild (max 10°C on Tue afternoon, min 1°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the SW by Tue night).
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Latest snow reports near Asosan:
Asosan Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 14 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Kumamoto are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.4 | Bluebird days Average snow, mostly sunny, light wind. |
Asosan Forecast Snowfall
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Other resorts in Japan - Kumamoto are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Asosan at the specific elevation of 1050 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Asosan. 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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