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Japan Weekly Snow Roundup #292
Weekly Snow News for Japan, updated 10 December 2025: early-season bases deepen rapidly as Siberian air drives repeated snow across Hokkaido and Honshu
View forecast
Iox-Arosa at 600 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 11 Dec 2025
Now
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | |  |  |  | | | |  | | |  | |
cloudy | light rain | mod. snow | light snow | snow shwrs | light snow | some clouds | cloudy | mod. rain | heavy rain | mod. rain | light snow | light snow | light snow | clear | some clouds | some clouds | rain shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 9 | 4 | 1 | — | — | — | — | — | — | 3 | 3 | 2 | — | — | — | — | |
— | 1 | 14 | — | — | — | — | — | 7 | 15 | 7 | — | — | — | — | — | — | 2 | |
max °C | 10 | 10 | 4 | -3 | -3 | -3 | 2 | 3 | 4 | 5 | 3 | 1 | 0 | 0 | -1 | 4 | 4 | 4 |
min °C | 7 | 8 | -3 | -3 | -5 | -5 | 0 | 2 | 3 | 5 | 2 | 0 | 0 | -1 | -2 | 2 | 3 | 3 |
4 | 4 | -9 | -8 | -9 | -9 | 0 | -1 | 0 | 2 | -4 | -6 | -3 | -1 | -2 | 0 | 0 | -1 | |
46 | 47 | 98 | 93 | 81 | 79 | 48 | 66 | 76 | 98 | 92 | 87 | 95 | 97 | 76 | 71 | 81 | 82 | |
1850 | 1800 | 650 | 0 | 250 | 0 | 600 | 1250 | 1650 | 1750 | 1000 | 650 | 550 | 600 | 250 | 850 | 1150 | 1300 | |
 | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — |
Next 0-3 days weather summary:
Mild with heavy rain (total 22.0mm), heaviest during Thu night. Becoming colder with a moderate fall of snow heaviest on Thu night. Freeze-thaw conditions (max 10°C on Thu morning, min -5°C on Fri afternoon). Winds decreasing (fresh winds from the SW on Thu afternoon, calm by Sat morning).
Next 4-6 days weather summary:
Heavy rain (total 24.0mm), mainly falling Sun morning. Becoming colder with a light covering of snow, mostly falling on Mon morning. Freeze-thaw conditions (max 5°C on Sun morning, min -2°C on Mon night). Winds decreasing (strong winds from the WNW on Sun afternoon, calm by Mon night).
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Latest snow reports near Iox-Arosa:
Iox-Arosa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 8 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Toyama are reporting: powder (0) / good piste (0)
Snow History
Week 2 of December has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.7 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Iox-Arosa Forecast Snowfall
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Other resorts in Japan - Toyama are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Iox-Arosa at the specific elevation of 600 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Iox-Arosa. 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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