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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 1096 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | | |  |  | | | | | | |  | | |
clear | clear | clear | some clouds | some clouds | some clouds | some clouds | some clouds | mod. rain | rain shwrs | some clouds | some clouds | clear | clear | clear | some clouds | light rain | mod. rain | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | 6 | 3 | — | — | — | — | — | — | 1 | 6 | |
max °C | 4 | 5 | 6 | 8 | 6 | 8 | 10 | 11 | 10 | 8 | 4 | 1 | 2 | 2 | 6 | 8 | 8 | 9 |
min °C | 3 | 4 | 5 | 7 | 6 | 6 | 8 | 10 | 9 | 6 | 3 | 0 | 1 | 2 | 3 | 6 | 7 | 8 |
1 | 3 | 5 | 4 | 2 | 2 | 5 | 7 | 5 | 3 | -2 | -6 | -2 | -1 | 1 | 2 | 2 | 4 | |
75 | 65 | 34 | 39 | 79 | 80 | 86 | 78 | 88 | 92 | 87 | 91 | 68 | 67 | 33 | 37 | 91 | 98 | |
1550 | 1950 | 2500 | 2650 | 2450 | 2600 | 2700 | 2800 | 3000 | 2600 | 2150 | 1150 | 1300 | 1400 | 2450 | 2700 | 2650 | 2700 | |
 | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 5:02 | — | — | 5:02 | — | — | 5:02 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — |
Next 0-3 days weather summary:
Light rain (total 6.0mm), mostly falling on Sat night. Very mild (max 11°C on Sat afternoon, min 3°C on Thu morning). Winds increasing (calm on Thu night, strong winds from the SSW by Sat night).
Next 4-6 days weather summary:
Moderate rain (total 10.0mm), heaviest on Tue night. Freeze-thaw conditions (max 9°C on Tue night, min 0°C on Sun night). Winds increasing (light winds from the NE on Mon afternoon, strong winds from the S by Tue morning).
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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:
0.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.9 | Powder days Fresh snow, limited sun, any wind. |
1.6 | 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 1096 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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