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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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Iwappara at 400 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 | |
 |  |  |  |  |  |  | |  |  |  | | | |  | |  |  | |
some clouds | cloudy | heavy snow | mod. snow | light snow | light snow | snow shwrs | cloudy | cloudy | light rain | mod. rain | light snow | light snow | light snow | snow shwrs | some clouds | clear | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 18 | 6 | 5 | 3 | — | — | — | — | — | 3 | 4 | 5 | 2 | — | — | — | |
— | — | 2 | — | — | — | — | — | — | 3 | 8 | 2 | — | — | — | — | — | — | |
max °C | 9 | 8 | 4 | -2 | -2 | -3 | 2 | 2 | 3 | 4 | 4 | 2 | 1 | 1 | 0 | 3 | 2 | -2 |
min °C | 5 | 3 | -1 | -2 | -3 | -4 | 0 | -3 | -3 | 4 | 3 | 0 | 1 | 0 | -4 | 1 | -4 | -3 |
3 | 1 | -7 | -9 | -7 | -4 | 0 | -6 | -7 | 4 | -2 | -5 | -4 | -5 | -4 | 1 | -4 | -5 | |
73 | 72 | 97 | 92 | 91 | 96 | 85 | 80 | 80 | 99 | 99 | 93 | 94 | 94 | 97 | 84 | 80 | 69 | |
1700 | 1850 | 650 | 0 | 0 | 0 | 400 | 850 | 1550 | 1750 | 1450 | 650 | 550 | 550 | 400 | 650 | 850 | 500 | |
 | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — |
 | — | 4:28 | — | — | 4:28 | — | — | 4:28 | — | — | 4:28 | — | — | 4:28 | — | — | 4:29 | — |
Next 0-3 days weather summary:
Light rain (total 2.0mm) on Thu night. Becoming colder with heavy fall of snow, heaviest during Thu night. Freeze-thaw conditions (max 9°C on Thu morning, min -4°C on Fri night). Winds decreasing (fresh winds from the NW on Fri morning, calm by Sat morning).
Next 4-6 days weather summary:
Moderate rain (total 13.0mm), heaviest on Sun afternoon giving way to a moderate fall of snow, heaviest on Mon afternoon. Freeze-thaw conditions (max 4°C on Sun morning, min -4°C on Mon night). Winds decreasing (fresh winds from the WNW on Sun night, calm by Tue afternoon).
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Latest snow reports near Iwappara:
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Iwappara Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 13 cm |
| Last snowfall: | 10 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
Snow History
Week 2 of December has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.1 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Iwappara Forecast Snowfall
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Photos of Iwappara
Mid-station ticket hut at Iwappara by Snow Country Instructors
View from the slopes at Iwappara by Snow Country Instructors
Iwappara from a distance by Snow Country Instructors
Upload new photo Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Iwappara at the specific elevation of 400 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Iwappara. 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 Iwappara
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