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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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Tateyama Sangaku at 1188 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 | clear | clear | some clouds | clear | some clouds | light rain | heavy rain | light snow | snow shwrs | snow shwrs | clear | cloudy | clear | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | 4 | 1 | — | — | — | — | — | |
— | — | — | — | — | — | — | 1 | 16 | — | — | — | — | — | — | — | |
max °C | 3 | 7 | 7 | 7 | 9 | 9 | 9 | 10 | 7 | 1 | -3 | -3 | 2 | 5 | 5 | 6 |
min °C | 0 | 6 | 6 | 6 | 8 | 9 | 9 | 8 | 3 | -3 | -4 | -3 | -2 | 4 | 5 | 5 |
0 | 4 | 3 | 3 | 5 | 6 | 7 | 5 | 0 | -8 | -9 | -7 | -2 | 2 | 2 | 2 | |
38 | 26 | 37 | 31 | 77 | 62 | 45 | 73 | 100 | 98 | 93 | 87 | 36 | 27 | 43 | 65 | |
1450 | 2300 | 2550 | 2450 | 2550 | 2700 | 2900 | 2800 | 2550 | 1200 | 650 | 750 | 1150 | 2000 | 2150 | 2400 | |
 | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — |
Next 0-3 days weather summary:
Moderate rain (total 17.0mm), heaviest on Sun afternoon. Freeze-thaw conditions (max 10°C on Sun morning, min 0°C on Thu night). Wind will be generally light.
Next 4-6 days weather summary:
A dusting of snow giving way to moderate rain (total 13.0mm) heaviest on Wed afternoon. Freeze-thaw conditions (max 8°C on Wed morning, min -4°C on Mon morning). Winds increasing (calm on Mon night, strong winds from the S by Wed morning).
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Latest snow reports near Tateyama Sangaku:
48 km away from Tateyama Sangaku
17 hours ago
There is heavy snow falling at Hakuba Cortina Kokusai. from Hakuba Cortina Kokusai
Tateyama Sangaku 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 - Toyama are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
1.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
3.6 | Powder days Fresh snow, limited sun, any wind. |
0.4 | Bluebird days Average snow, mostly sunny, light wind. |
Tateyama Sangaku Forecast Snowfall
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Other resorts in Japan - Toyama are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Tateyama Sangaku at the specific elevation of 1188 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Tateyama Sangaku. 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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