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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 784 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 19 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  |  |  | | |  |  | |  | |  | | |
snow shwrs | cloudy | some clouds | light rain | light rain | mod. rain | heavy rain | light snow | light snow | light snow | light snow | clear | some clouds | cloudy | light rain | heavy rain | mod. rain | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 2 | 1 | 1 | — | — | — | — | — | — | — | 2 | |
— | — | — | 1 | 2 | 8 | 16 | 7 | — | — | — | — | — | — | 3 | 11 | 10 | — | |
max °C | 0 | 1 | 4 | 6 | 7 | 8 | 9 | 4 | -1 | -6 | -6 | -4 | -1 | 0 | 3 | 5 | 6 | 0 |
min °C | -1 | 1 | 2 | 5 | 7 | 7 | 6 | 1 | -6 | -7 | -6 | -6 | -2 | 0 | 1 | 3 | 3 | -7 |
-6 | -4 | -4 | -1 | 2 | 2 | 1 | -4 | -15 | -16 | -13 | -11 | -2 | -2 | -4 | -3 | -4 | -17 | |
92 | 95 | 53 | 91 | 82 | 91 | 89 | 97 | 90 | 82 | 78 | 78 | 47 | 39 | 59 | 93 | 92 | 84 | |
650 | 1000 | 2050 | 2000 | 2100 | 2300 | 2450 | 1400 | 450 | 0 | 0 | 0 | 0 | 950 | 1800 | 1800 | 2050 | 500 | |
 | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | 4:13 | — | — | 4:13 | — | — | 4:14 | — | — | 4:14 | — | — | 4:15 | — | — | 4:15 | — |
Next 0-3 days weather summary:
Heavy rain (total 34.0mm), heaviest during Sun morning. Later becoming colder with a dusting of snow on Sun afternoon. Freeze-thaw conditions (max 9°C on Sun morning, min -6°C on Sun night). Mainly near gales.
Next 4-6 days weather summary:
Heavy rain (total 24.0mm), heaviest during Wed morning. Later becoming colder with a dusting of snow on Wed night. Freeze-thaw conditions (max 6°C on Wed afternoon, min -7°C on Mon morning). Winds increasing (calm on Tue morning, near gales from the SW by Wed afternoon).
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Latest snow reports near Iwakisan Hyakuzawa:
41 km away from Iwakisan Hyakuzawa
36 minutes ago
Rain and snow or hail reported from Aomori at 242 metres elevation 9 kms NW of Moya Hills Ski Resort from Moya Hills
41 km away from Iwakisan Hyakuzawa
14 hours agoContinuous light snow reported from Aomori at 242 metres elevation 9 kms NW of Moya Hills Ski Resort from Moya Hills
Iwakisan Hyakuzawa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| 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. |
|---|---|
3.8 | 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 784 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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