Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  |  |  | | | | |  |  | |  |  | |
some clouds | clear | clear | some clouds | some clouds | some clouds | light rain | heavy rain | light rain | light rain | light rain | light rain | light rain | rain shwrs | heavy rain | rain shwrs | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | 4 | 25 | 4 | 3 | 3 | 4 | 1 | 1 | 35 | 2 | — | — |
max °C | 5 | 4 | 7 | 12 | 11 | 11 | 12 | 10 | 9 | 9 | 8 | 10 | 13 | 15 | 9 | 3 | 1 | 0 |
min °C | 3 | 2 | 2 | 10 | 9 | 10 | 10 | 8 | 8 | 9 | 8 | 8 | 12 | 12 | 3 | 3 | 1 | 0 |
chill °C | -2 | -4 | -3 | 9 | 6 | 7 | 5 | 5 | 6 | 8 | 8 | 5 | 8 | 8 | -5 | -6 | -8 | -9 |
Humid % | 93 | 82 | 41 | 15 | 18 | 44 | 61 | 100 | 90 | 89 | 79 | 92 | 74 | 70 | 98 | 93 | 97 | 98 |
Freeze m | 2650 | 3250 | 3500 | 3850 | 3900 | 3950 | 3900 | 3700 | 3700 | 3300 | 3450 | 3900 | 3800 | 3950 | 3700 | 2700 | 1900 | 1700 |
 | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | 5:00 | — | — | 4:58 | — | — | 4:57 | — | — | 4:55 | — | — | 4:53 | — | — | 4:52 | — |
Next 3 days weather summary:Heavy rain (total 33.0mm), heaviest during Mon afternoon. Very mild (max 12°C on Sun morning, min 2°C on Sat afternoon). Winds increasing (light winds from the WNW on Sat night, gales from the W by Mon morning). | Days 4-6 weather summary:Heavy rain (total 49.0mm), heaviest during Wed night. Freeze-thaw conditions (max 15°C on Wed afternoon, min 0°C on Thu night). Winds increasing (calm on Tue afternoon, severe gales from the W by Wed night). | |||||||||||||||||
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. |
|---|---|
0.1 | 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 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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