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Japan Weekly Snow Roundup #292
Weekly Snow News for Japan, updated 10 December 2025: early-season bases deepen rapidly as Siberian air drives repeated snow across Hokkaido and Honshu
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Iizuna Kogen at 1480 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 11 Dec 2025
Now
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | | |  | | |  | | | | |  | |
clear | some clouds | heavy snow | snow shwrs | snow shwrs | snow shwrs | clear | some clouds | snow shwrs | mod. snow | mod. snow | snow shwrs | light snow | light snow | snow shwrs | clear | clear | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 23 | 3 | 1 | — | — | — | — | 5 | 9 | 5 | 4 | 4 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 2 | 4 | -1 | -9 | -9 | -8 | -5 | -2 | 0 | 0 | -1 | -5 | -6 | -6 | -6 | -4 | -3 | -1 |
min °C | 1 | 2 | -8 | -9 | -10 | -10 | -7 | -3 | -2 | -1 | -3 | -6 | -6 | -6 | -7 | -5 | -3 | -2 |
-4 | -3 | -16 | -18 | -17 | -16 | -7 | -7 | -9 | -6 | -10 | -11 | -11 | -12 | -12 | -5 | -3 | -6 | |
28 | 39 | 96 | 88 | 87 | 80 | 57 | 54 | 68 | 98 | 97 | 88 | 92 | 89 | 84 | 48 | 62 | 59 | |
1600 | 1900 | 750 | 250 | 300 | 0 | 300 | 950 | 1150 | 1400 | 1400 | 500 | 550 | 700 | 0 | 450 | 950 | 600 | |
 | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — |
Next 0-3 days weather summary:
A heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 4°C on Thu afternoon, min -10°C on Fri afternoon). Winds increasing (calm on Sat morning, fresh winds from the SSW by Sat night).
Next 4-6 days weather summary:
A heavy fall of snow, heaviest during Sun afternoon. Temperatures will be below freezing (max 0°C on Sun morning, min -7°C on Mon night). Winds decreasing (fresh winds from the WNW on Sun night, calm by Tue morning).
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Latest snow reports near Iizuna Kogen:
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Iizuna Kogen Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 1 cm |
| Last snowfall: | 10 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (2) / good piste (2)
Snow History
Week 2 of December has on average:
1.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.4 | Powder days Fresh snow, limited sun, any wind. |
0.6 | Bluebird days Average snow, mostly sunny, light wind. |
Iizuna Kogen Forecast Snowfall
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Photos of Iizuna Kogen
Upload new photo Other resorts in Japan - Nagano are reporting: powder (2) / good piste (2)
The above table gives the weather forecast for Iizuna Kogen at the specific elevation of 1480 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Iizuna Kogen. 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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