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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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Iwakisan Hyakuzawa at 565 m altitude
Issued by Snow-Forecast.com at: 8 pm (local time) / 18 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  |  |  | | | | |  | |  | |
light snow | some clouds | cloudy | some clouds | cloudy | some clouds | mod. rain | mod. rain | light snow | light snow | light snow | light snow | some clouds | clear | some clouds | light rain | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | 2 | 2 | 1 | — | — | — | — | — | |
— | — | — | — | — | — | 8 | 10 | 6 | — | — | — | — | — | — | 1 | |
max °C | 0 | 1 | 2 | 5 | 7 | 8 | 9 | 10 | 4 | 0 | -4 | -4 | -4 | 0 | 0 | 3 |
min °C | -4 | 0 | 2 | 2 | 6 | 7 | 8 | 7 | 2 | -5 | -5 | -4 | -5 | -2 | -1 | -1 |
-11 | -4 | -1 | -2 | 1 | 3 | 4 | 4 | -2 | -13 | -13 | -11 | -10 | -4 | -4 | -4 | |
83 | 89 | 90 | 59 | 87 | 85 | 84 | 84 | 95 | 88 | 77 | 74 | 76 | 51 | 44 | 47 | |
300 | 650 | 1100 | 2050 | 2000 | 2150 | 2300 | 2500 | 1250 | 400 | 0 | 0 | 0 | 0 | 650 | 1600 | |
 | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | — | 4:13 | — | — | 4:13 | — | — | 4:14 | — | — | 4:14 | — | — | 4:15 | — |
Next 0-3 days weather summary:
Heavy rain (total 24.0mm), heaviest during Sun morning. Later becoming colder with a dusting of snow on Sun afternoon. Freeze-thaw conditions (max 10°C on Sun morning, min -4°C on Thu night). Winds increasing (light winds from the WSW on Fri morning, strong winds from the SW by Sun morning).
Next 4-6 days weather summary:
A dusting of snow giving way to moderate rain (total 12.0mm) heaviest on Wed afternoon. Freeze-thaw conditions (max 7°C on Wed afternoon, min -5°C on Sun night). Winds increasing (calm on Tue afternoon, strong winds from the SSW by Wed afternoon).
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Latest snow reports near Iwakisan Hyakuzawa:
41 km away from Iwakisan Hyakuzawa
4 hours ago
Continuous light snow reported from Aomori at 242 metres elevation 9 kms NW of Moya Hills Ski Resort from Moya Hills
41 km away from Iwakisan Hyakuzawa
6 hours agoFreezing rain reported from Aomori at 242 metres elevation 9 kms NW of Moya Hills but it is forecast cold enough for snow at the ski area from Moya Hills
Iwakisan Hyakuzawa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 4 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Hyakuzawa are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
3.7 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
Iwakisan Hyakuzawa Forecast Snowfall
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Other resorts in Japan - Hyakuzawa are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Iwakisan Hyakuzawa at the specific elevation of 565 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Iwakisan Hyakuzawa. 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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