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Japan Christmas Snow Roundup #294
Weekly Snow News for Japan, updated 24 December 2025: Siberian cold continues to deliver exceptional snowfall, with Hokkaido leading global totals.
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Osa at 1030 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 25 Dec 2025
Now
Thu 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | | |  | |  |  |  | | | |  | |
light snow | light snow | mod. snow | mod. snow | light snow | light snow | light snow | light snow | some clouds | some clouds | some clouds | clear | cloudy | light snow | some clouds | cloudy | cloudy | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | 3 | 7 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | |
max °C | -1 | -6 | -5 | -5 | -6 | -4 | -4 | -2 | -1 | 0 | 0 | 3 | 3 | 3 | 0 | -1 | -1 |
min °C | -4 | -9 | -6 | -6 | -6 | -5 | -4 | -3 | -2 | -1 | -1 | 1 | 3 | 0 | -1 | -2 | -2 |
-14 | -20 | -16 | -14 | -14 | -13 | -12 | -10 | -6 | -5 | -6 | -5 | -3 | -6 | -7 | -5 | -4 | |
92 | 90 | 95 | 96 | 91 | 92 | 92 | 91 | 92 | 85 | 89 | 80 | 90 | 88 | 74 | 78 | 57 | |
900 | 150 | 200 | 300 | 0 | 400 | 600 | 650 | 750 | 1050 | 850 | 1350 | 1400 | 1450 | 950 | 950 | 500 | |
 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — |
 | 5:05 | — | — | 5:06 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — |
Next 0-3 days weather summary:
A moderate fall of snow, heaviest on Fri morning. Temperatures will be below freezing (max -1°C on Thu afternoon, min -9°C on Thu night). Winds decreasing (gales from the WNW on Thu night, light winds from the WSW by Sun morning).
Next 4-6 days weather summary:
Light rain (total 3.0mm), mostly falling on Mon night. Freeze-thaw conditions (max 3°C on Mon morning, min -2°C on Tue afternoon). Winds decreasing (fresh winds from the WSW on Mon afternoon, light winds from the WNW by Tue night).
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Latest snow reports near Osa:
Osa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
Snow History
Week 4 of December has on average:
0.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
1.0 | Bluebird days Average snow, mostly sunny, light wind. |
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Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Osa at the specific elevation of 1030 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. 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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