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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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Gassan Glacier at 1984 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  |  | | | |  |  | |  | | |  | |
light snow | light snow | snow shwrs | clear | clear | some clouds | some clouds | cloudy | some clouds | cloudy | light snow | light snow | snow shwrs | clear | clear | clear | clear | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
2 | 1 | — | — | — | — | — | — | — | — | 2 | 4 | 1 | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -10 | -9 | -5 | -2 | 1 | 2 | 2 | 3 | 5 | 4 | 1 | -3 | -8 | -9 | -5 | -3 | 0 | 2 |
min °C | -10 | -9 | -9 | -3 | 0 | 1 | 2 | 2 | 3 | 2 | -2 | -7 | -9 | -9 | -8 | -5 | -2 | -1 |
-22 | -21 | -20 | -10 | -6 | -6 | -5 | -5 | -3 | -5 | -10 | -17 | -19 | -18 | -15 | -9 | -5 | -6 | |
68 | 73 | 83 | 58 | 19 | 15 | 67 | 78 | 57 | 75 | 99 | 81 | 67 | 69 | 31 | 13 | 12 | 16 | |
350 | 400 | 300 | 1150 | 2000 | 2350 | 2350 | 2350 | 2550 | 2650 | 2100 | 950 | 550 | 500 | 0 | 550 | 1550 | 2000 | |
 | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — |
 | — | 4:20 | — | — | 4:21 | — | — | 4:21 | — | — | 4:22 | — | — | 4:22 | — | — | 4:22 | — |
Next 0-3 days weather summary:
A dusting of new snow. Freeze-thaw conditions (max 5°C on Sat night, min -10°C on Thu morning). Winds decreasing (near gales from the WNW on Thu morning, moderate winds from the W by Fri morning).
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Sun night. Freeze-thaw conditions (max 4°C on Sun morning, min -9°C on Mon morning). Winds decreasing (strong winds from the W on Sun night, light winds from the SW by Tue afternoon).
Popular Gassan Glacier Pages
Snow Radar
Latest snow reports near Gassan Glacier:
Gassan Glacier Snow Conditions
| Top snow depth: | 0 cm |
|---|---|
| Bottom snow depth: | 0 cm |
| Fresh snowfall depth: | 42 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
4.9 | Powder days Fresh snow, limited sun, any wind. |
0.9 | Bluebird days Average snow, mostly sunny, light wind. |
Gassan Glacier Forecast Snowfall
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Photos of Gassan Glacier
Tsukiyama ski area (Gassan) has 10m (33.3ft) snow. by Snow Forecast Admin
Tsukiyama ski area (Gassan) has 10m (33.3ft) snow. by Snow Forecast Admin
Tsukiyama ski area (Gassan) has 10m (33.3ft) snow. by Snow Forecast Admin
Upload new photo Other resorts in Japan are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Gassan Glacier at the specific elevation of 1984 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Gassan Glacier. 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 Gassan Glacier
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