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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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Sugadaira at 1435 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 | |
 | |  |  | | |  |  |  |  | |  | | | |  | | | |
clear | clear | some clouds | some clouds | clear | some clouds | cloudy | light rain | light snow | snow shwrs | some clouds | clear | some clouds | clear | some clouds | light snow | light rain | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | 2 | |
— | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 3 | — | |
max °C | 3 | 4 | 5 | 6 | 7 | 7 | 8 | 7 | 0 | -5 | -5 | -1 | 1 | 1 | 1 | 2 | 3 | 1 |
min °C | 1 | 4 | 4 | 5 | 6 | 7 | 7 | 4 | -5 | -6 | -5 | -4 | 0 | 0 | -1 | 1 | 2 | -6 |
-2 | 1 | 0 | 2 | 2 | 4 | 4 | 0 | -12 | -13 | -11 | -4 | -3 | -5 | -6 | -4 | -2 | -13 | |
40 | 43 | 38 | 90 | 81 | 81 | 83 | 96 | 98 | 90 | 81 | 53 | 54 | 49 | 64 | 74 | 93 | 98 | |
1850 | 2450 | 2500 | 2400 | 2650 | 2900 | 2800 | 2750 | 1200 | 600 | 700 | 500 | 1400 | 1650 | 1450 | 2250 | 2250 | 1100 | |
 | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — | — | 4:34 | — | — | 4:35 | — | — | 4:35 | — |
Next 0-3 days weather summary:
Light rain (total 3.0mm) at first, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 8°C on Sun morning, min -5°C on Sun night). Wind will be generally light.
Next 4-6 days weather summary:
Light rain (total 3.0mm) at first, then becoming colder with a dusting of snow on Wed night. Freeze-thaw conditions (max 3°C on Wed afternoon, min -6°C on Mon morning). Wind will be generally light.
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Latest snow reports near Sugadaira:
35 km away from Sugadaira
3 hours ago
Partly cloudy at Madarao Kogen. Just a light breeze today. Feeling cold here today. There is a dusting of fresh snow. Packed snow on piste. The off-piste has an icy crust. from Madarao Kogen
27 km away from Sugadaira
21 hours ago
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
27 km away from Sugadaira
23 hours agoModerate to heavy freezing rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
48 km away from Sugadaira
24 hours agoThere is heavy snow falling at Hakuba Cortina Kokusai. from Hakuba Cortina Kokusai
Sugadaira Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| 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:
1.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.0 | Powder days Fresh snow, limited sun, any wind. |
1.8 | Bluebird days Average snow, mostly sunny, light wind. |
Sugadaira 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 Sugadaira at the specific elevation of 1435 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Sugadaira. 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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