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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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Mountain Park Tsunan at 510 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 18 Dec 2025
Now
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  |  |  |  | | | | | | |
snow shwrs | clear | clear | clear | clear | clear | clear | some clouds | cloudy | mod. rain | light snow | light snow | light snow | clear | clear | clear | some clouds | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | 8 | 10 | — | — | — | — | — | — | |
max °C | 1 | 0 | 8 | 9 | 6 | 13 | 13 | 11 | 13 | 11 | 5 | 0 | 0 | -1 | 8 | 8 | 6 |
min °C | -1 | -2 | 5 | 6 | 5 | 9 | 10 | 10 | 13 | 9 | 1 | 0 | -1 | -2 | 4 | 4 | 4 |
-1 | -2 | 4 | 4 | 3 | 8 | 9 | 8 | 12 | 7 | -3 | -3 | -1 | -2 | 3 | 1 | 1 | |
80 | 66 | 61 | 67 | 63 | 79 | 77 | 74 | 77 | 96 | 97 | 97 | 87 | 74 | 47 | 53 | 61 | |
650 | 0 | 2050 | 2550 | 2650 | 2600 | 2700 | 2950 | 3000 | 2600 | 1100 | 550 | 500 | 0 | 1850 | 2200 | 2450 | |
 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | 4:30 | — | — | 4:30 | — | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — |
Next 0-3 days weather summary:
Mostly dry. Freeze-thaw conditions (max 13°C on Sat morning, min -2°C on Thu night). Wind will be generally light.
Next 4-6 days weather summary:
Moderate rain (total 18.0mm) heaviest on Sun afternoon, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 11°C on Sun afternoon, min -2°C on Mon night). Wind will be generally light.
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Latest snow reports near Mountain Park Tsunan:
36 km away from Mountain Park Tsunan
6 hours ago
Rain and snow or hail reported from Takada at 18 metres elevation only 2 kms E of Kanayasan Ski Resort from Kanayasan
36 km away from Mountain Park Tsunan
7 hours agoContinuous light rain reported from Takada at 18 metres elevation only 2 kms E of Kanayasan but it is forecast cold enough for snow at the ski area from Kanayasan
16 km away from Mountain Park Tsunan
11 hours ago
It is snowing steadily in Ishiuchi Maruyama. from Ishiuchi Maruyama
Mountain Park Tsunan Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 6 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.7 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Mountain Park Tsunan Forecast Snowfall
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Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Mountain Park Tsunan at the specific elevation of 510 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Mountain Park Tsunan. 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 Mountain Park Tsunan
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