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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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Oyasu Onsen at 521 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 18 Dec 2025
Now
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | | | |  |  | | | |  | |  |  | |
light snow | light snow | clear | clear | some clouds | clear | clear | some clouds | cloudy | light rain | light snow | light snow | light snow | snow shwrs | clear | some clouds | light rain | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | 1 | |
max °C | -1 | -2 | 4 | 4 | 4 | 11 | 10 | 9 | 13 | 11 | 7 | -1 | -2 | -2 | 2 | 2 | 4 |
min °C | -3 | -3 | 2 | 1 | 2 | 8 | 7 | 8 | 11 | 8 | -1 | -2 | -3 | -3 | 0 | 0 | 2 |
-8 | -7 | 2 | -2 | 0 | 5 | 4 | 6 | 10 | 6 | -8 | -9 | -9 | -6 | 0 | -3 | -1 | |
79 | 91 | 78 | 71 | 64 | 67 | 81 | 65 | 70 | 92 | 91 | 91 | 77 | 90 | 60 | 55 | 74 | |
350 | 0 | 800 | 1600 | 2350 | 2200 | 2450 | 2650 | 2650 | 2450 | 1050 | 300 | 350 | 0 | 550 | 1550 | 1950 | |
 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | 4:15 | — | — | 4:16 | — | — | 4:16 | — | — | 4:16 | — | — | 4:17 | — | — | 4:17 | — |
Next 0-3 days weather summary:
Mostly dry. Freeze-thaw conditions (max 13°C on Sun morning, min -3°C on Thu afternoon). Wind will be generally light.
Next 4-6 days weather summary:
Light rain (total 9.0mm) at first, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 11°C on Sun afternoon, min -3°C on Mon afternoon). Winds decreasing (fresh winds from the WNW on Sun night, calm by Mon night).
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Latest snow reports near Oyasu Onsen:
Oyasu Onsen Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 10 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Akita 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. |
|---|---|
2.6 | Powder days Fresh snow, limited sun, any wind. |
0.4 | Bluebird days Average snow, mostly sunny, light wind. |
Oyasu Onsen Forecast Snowfall
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Other resorts in Japan - Akita are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Oyasu Onsen at the specific elevation of 521 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Oyasu Onsen. 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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