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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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Osorakan at 1346 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 | cloudy | some clouds | some clouds | cloudy | heavy rain | rain shwrs | some clouds | clear | clear | some clouds | clear | some clouds | cloudy | mod. rain | mod. rain | snow shwrs | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | 11 | 5 | — | — | — | — | — | — | — | 7 | 9 | — | — | |
max °C | 6 | 5 | 8 | 9 | 9 | 8 | 6 | 2 | -1 | 0 | 1 | 6 | 6 | 6 | 9 | 7 | 1 | -1 |
min °C | 6 | 4 | 5 | 8 | 9 | 8 | 4 | 0 | -3 | -1 | 0 | 2 | 5 | 6 | 7 | 5 | -1 | -3 |
2 | -2 | -1 | 4 | 5 | 4 | -1 | -6 | -10 | -6 | -4 | -1 | 0 | 0 | 2 | 0 | -9 | -11 | |
32 | 91 | 77 | 80 | 76 | 89 | 99 | 87 | 77 | 52 | 68 | 21 | 21 | 94 | 89 | 99 | 97 | 91 | |
2700 | 2500 | 2600 | 2650 | 2850 | 2950 | 2550 | 2000 | 950 | 1350 | 1300 | 2200 | 2500 | 2550 | 2900 | 2550 | 1750 | 1100 | |
 | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — |
 | — | 5:02 | — | — | 5:02 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — |
Next 0-3 days weather summary:
Moderate rain (total 16.0mm), heaviest on Sat night. Freeze-thaw conditions (max 9°C on Sat morning, min -3°C on Sun night). Mainly strong winds.
Next 4-6 days weather summary:
Moderate rain (total 16.0mm), heaviest on Wed morning. Freeze-thaw conditions (max 9°C on Tue night, min -3°C on Wed night). Winds increasing (light winds from the SE on Mon night, gales from the S by Tue night).
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Latest snow reports near Osorakan:
Osorakan Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 14 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.7 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.3 | Powder days Fresh snow, limited sun, any wind. |
1.3 | Bluebird days Average snow, mostly sunny, light wind. |
Osorakan Forecast Snowfall
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Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Osorakan at the specific elevation of 1346 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osorakan. 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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