Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  | |  | | | | |  |  | |
cloudy | light rain | mod. rain | light snow | light snow | light snow | light snow | cloudy | cloudy | light rain | light rain | light rain | light snow | light snow | heavy snow | heavy snow | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
 cm | — | — | — | 1 | — | 1 | 1 | — | — | — | — | — | 2 | 2 | 11 | 25 |
mm | — | 5 | 10 | 9 | — | — | — | — | — | 3 | 1 | 4 | 16 | — | — | — |
max °C | 6 | 5 | 5 | 5 | 0 | -1 | -2 | 0 | 1 | 3 | 5 | 5 | 4 | 1 | -4 | -5 |
min °C | 4 | 4 | 5 | 0 | -1 | -2 | -4 | -1 | 1 | 1 | 4 | 4 | 1 | -2 | -4 | -6 |
chill °C | 0 | -1 | 4 | -9 | -9 | -10 | -10 | -5 | -3 | -5 | -1 | -2 | -9 | -13 | -15 | -18 |
Humid % | 67 | 97 | 100 | 99 | 96 | 98 | 99 | 66 | 56 | 94 | 81 | 99 | 98 | 98 | 98 | 98 |
Freeze m | 2650 | 2850 | 2650 | 2150 | 1400 | 1300 | 1100 | 1250 | 1850 | 2300 | 2800 | 2450 | 2050 | 1600 | 950 | 700 |
 | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | — | 4:27 | — | — | 4:25 | — | — | 4:25 | — | — | 4:24 | — | — | 4:23 | — |
Next 4 days weather summary:Heavy rain (total 24.0mm), heaviest during Sun night. Later becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 6°C on Sat night, min -4°C on Mon night). Winds increasing (light winds from the SW on Sun afternoon, gales from the NW by Sun night). | Days 5-7 weather summary:Heavy rain (total 24.0mm) on Wed night. Becoming colder with heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 5°C on Wed morning, min -7°C on Fri afternoon). Winds increasing (moderate winds from the SSE on Tue night, stormy winds from the W by Thu morning). | |||||||||||||||
SnowPro
Hourly & 16-day forecastsView past weatherFast, ad-free browsingSnow hindcasts & HistoryAvalanche information: Japan Avalanche Network
Latest snow reports near Gassan Glacier:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 11 Nov 2026 |
| Snow Alerts | Create Alert |
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.0 | Powder days Fresh snow, limited sun, any wind. |
0.3 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Gassan Glacier at the specific elevation of 1500 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.
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