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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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Heavens Sonohara Snow World at 1600 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 | |
 |  |  |  |  | |  |  | | | | | | | |  | |
clear | clear | some clouds | rain shwrs | rain shwrs | some clouds | cloudy | light rain | light rain | rain shwrs | clear | clear | clear | some clouds | clear | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 2 | 1 | — | — | 3 | 3 | 2 | — | — | — | — | — | — | |
max °C | 1 | 3 | 3 | 5 | 6 | 6 | 7 | 7 | 6 | 6 | 0 | 1 | 0 | 1 | 1 | 2 |
min °C | 0 | 2 | 3 | 4 | 5 | 6 | 7 | 7 | 6 | 0 | 0 | 0 | -1 | 0 | 1 | 0 |
-3 | -1 | 1 | 0 | 2 | 3 | 4 | 4 | 4 | -4 | -4 | 0 | -4 | -2 | -1 | -3 | |
74 | 38 | 68 | 82 | 92 | 88 | 86 | 93 | 97 | 84 | 45 | 64 | 84 | 61 | 79 | 70 | |
1600 | 2200 | 2400 | 2400 | 2600 | 2750 | 2950 | 2800 | 2800 | 2400 | 1650 | 1800 | 1450 | 1700 | 1900 | 1800 | |
 | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | — | 4:38 | — | — | 4:38 | — | — | 4:38 | — | — | 4:39 | — | — | 4:39 | — |
Next 0-3 days weather summary:
Light rain (total 9.0mm), mostly falling on Fri night. Freeze-thaw conditions (max 7°C on Sat night, min 0°C on Thu night). Wind will be generally light.
Next 4-6 days weather summary:
Heavy rain (total 35.0mm), heaviest during Wed afternoon. Freeze-thaw conditions (max 6°C on Sun night, min -1°C on Mon night). Winds increasing (calm on Mon afternoon, fresh winds from the SSE by Wed afternoon).
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Latest snow reports near Heavens Sonohara Snow World:
Heavens Sonohara Snow World Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 2 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
Snow History
Week 3 of December has on average:
1.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
2.3 | Bluebird days Average snow, mostly sunny, light wind. |
Heavens Sonohara Snow World Forecast Snowfall
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Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
The above table gives the weather forecast for Heavens Sonohara Snow World at the specific elevation of 1600 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Heavens Sonohara Snow World. 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.
Visitor Reviews of Heavens Sonohara Snow World
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