Next 3 days weather summary:Moderate rain (total 12.0mm), heaviest on Mon morning. Very mild (max 12°C on Sun night, min 6°C on Fri night). Winds increasing (calm on Sat morning, near gales from the WSW by Mon morning). | Days 4-6 weather summary:Heavy rain (total 20.0mm), heaviest during Wed night. Very mild (max 12°C on Wed night, min 6°C on Mon night). Winds decreasing (near gales from the W on Mon afternoon, light winds from the SSW by Wed night). | ||||||||||||||||
Fri 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  | | |  |  | |  | |  |  | |
rain shwrs | cloudy | light rain | some clouds | some clouds | some clouds | light rain | light rain | light rain | rain shwrs | rain shwrs | clear | clear | clear | some clouds | cloudy | mod. rain | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 1 | — | 2 | — | — | — | 1 | 3 | 5 | 3 | 2 | — | — | — | — | — | 9 |
max °C | 9 | 9 | 6 | 7 | 9 | 10 | 11 | 12 | 10 | 10 | 8 | 7 | 7 | 8 | 10 | 11 | 12 |
min °C | 9 | 6 | 6 | 6 | 8 | 9 | 10 | 10 | 10 | 9 | 6 | 6 | 7 | 7 | 9 | 10 | 11 |
chill °C | 6 | 5 | 6 | 4 | 6 | 7 | 8 | 5 | 5 | 4 | 0 | 1 | 4 | 4 | 6 | 8 | 9 |
Humid % | 70 | 57 | 80 | 87 | 84 | 73 | 82 | 76 | 94 | 88 | 75 | 70 | 58 | 48 | 60 | 66 | 85 |
Freeze m | 3900 | 3600 | 3000 | 3200 | 3300 | 3800 | 3850 | 3900 | 3950 | 3900 | 3700 | 3700 | 3500 | 3350 | 4050 | 4200 | 4350 |
 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — |
 | 5:32 | — | — | 5:30 | — | — | 5:30 | — | — | 5:28 | — | — | 5:27 | — | — | 5:24 | — |
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: | 0 cm |
|---|---|
| Bottom snow depth: | 0 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 9 May 2026 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
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.
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