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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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Iox-Arosa at 600 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 | clear | some clouds | rain shwrs | clear | clear | some clouds | light rain | heavy rain | light snow | light snow | some clouds | clear | some clouds | cloudy | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | 2 | — | — | — | 3 | 13 | 7 | — | — | — | — | — | — | |
max °C | 3 | 3 | 4 | 10 | 11 | 9 | 13 | 14 | 12 | 13 | 10 | 5 | 1 | 2 | 3 | 9 | 9 | 8 |
min °C | 1 | 2 | 2 | 7 | 8 | 8 | 11 | 12 | 11 | 11 | 8 | 1 | 0 | 1 | 2 | 5 | 7 | 7 |
0 | 1 | 2 | 6 | 6 | 6 | 9 | 11 | 10 | 8 | 6 | -3 | -5 | -3 | 0 | 5 | 5 | 5 | |
74 | 55 | 46 | 44 | 44 | 73 | 71 | 55 | 61 | 76 | 99 | 95 | 87 | 71 | 60 | 56 | 54 | 70 | |
750 | 1050 | 1650 | 2400 | 2650 | 2500 | 2650 | 2650 | 2850 | 2850 | 2500 | 1100 | 600 | 750 | 1750 | 2050 | 2350 | 2450 | |
 | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 4:38 | — | — | 4:38 | — | — | 4:39 | — | — | 4:39 | — | — | 4:39 | — | — | 4:40 | — |
Next 0-3 days weather summary:
Light rain (total 2.0mm), mostly falling on Fri night. Very mild (max 14°C on Sat afternoon, min 1°C on Thu morning). Wind will be generally light.
Next 4-6 days weather summary:
Heavy rain (total 23.0mm), heaviest during Sun afternoon. Freeze-thaw conditions (max 13°C on Sun morning, min 0°C on Mon morning). Wind will be generally light.
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Latest snow reports near Iox-Arosa:
19 km away from Iox-Arosa
19 hours ago
Light rain reported from Nanto-shi wx at 65 metres elevation 8 kms WSW of Tonami Yumenotaira but it is forecast cold enough for snow at higher elevations in the ski area from Tonami Yumenotaira
Iox-Arosa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 2.0 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Toyama are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.6 | Powder days Fresh snow, limited sun, any wind. |
0.1 | 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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