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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 1742 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 19 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | |  |  |  | |  |  | |  | |  |  | |
clear | clear | some clouds | cloudy | clear | some clouds | cloudy | mod. snow | heavy snow | light snow | light snow | snow shwrs | some clouds | cloudy | cloudy | cloudy | mod. rain | mod. snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 5 | 11 | — | 1 | 1 | — | — | — | — | — | 10 | |
— | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | 7 | — | |
max °C | -1 | 2 | 3 | 4 | 5 | 6 | 7 | 2 | -4 | -10 | -10 | -6 | -1 | 1 | 4 | 4 | 3 | -1 |
min °C | -3 | 1 | 2 | 3 | 5 | 6 | 5 | -1 | -10 | -10 | -10 | -9 | -3 | -1 | 2 | 4 | 3 | -8 |
-9 | -4 | -5 | -4 | 0 | 1 | 0 | -9 | -24 | -23 | -22 | -19 | -7 | -5 | -4 | -1 | -3 | -20 | |
66 | 28 | 17 | 57 | 52 | 52 | 65 | 99 | 81 | 81 | 82 | 86 | 13 | 14 | 54 | 60 | 89 | 93 | |
1050 | 1900 | 2400 | 2300 | 2450 | 2750 | 2700 | 2300 | 900 | 300 | 350 | 0 | 750 | 1650 | 2150 | 2450 | 2450 | 850 | |
 | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 4:21 | — | — | 4:21 | — | — | 4:22 | — | — | 4:22 | — | — | 4:22 | — | — | 4:22 | — |
Next 0-3 days weather summary:
Mild at first with light rain (total 4.0mm) on Sun afternoon followed by colder weather and light fall of snow, heaviest on Sun afternoon. Freeze-thaw conditions (max 7°C on Sun morning, min -10°C on Sun night). Winds increasing (light winds from the W on Fri morning, severe gales from the WNW by Sun night).
Next 4-6 days weather summary:
Mild at first with light rain (total 7.0mm) on Wed afternoon followed by colder weather and light fall of snow, heaviest on Wed night. Freeze-thaw conditions (max 4°C on Tue night, min -10°C on Mon morning). Winds decreasing (gales from the WNW on Mon morning, light winds from the W by Tue morning).
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: | 31 cm |
| Last snowfall: | 18 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:
0.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
5.2 | Powder days Fresh snow, limited sun, any wind. |
0.6 | 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 1742 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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