Koshi Kogen Weather (Next 3 days): The snow forecast for Koshi Kogen is: A light covering of new snow, mostly falling on Wed night. Freeze-thaw conditions (max 8°C on Sat morning, min -5°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed night, calm by Sat afternoon).
Koshi Kogen Weather (Days 4-6): Light rain (total 8.0mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -4 |  | ||||
| Bottom Lift: | -3 | |
Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  | |  |  |  |  | | |  | | |  |  | | | |
light snow | light snow | light snow | snow shwrs | clear | some clouds | some clouds | some clouds | some clouds | clear | clear | clear | rain shwrs | light rain | light rain | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
5 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 2 | — | |
max °C | -2 | -1 | 0 | -2 | 3 | 4 | 0 | 8 | 8 | 4 | 12 | 14 | 8 | 4 | 4 | 3 |
min °C | -3 | -2 | -1 | -5 | 0 | 1 | -1 | 4 | 5 | 3 | 8 | 10 | 4 | 4 | 3 | 2 |
-11 | -8 | -4 | -5 | 0 | 1 | -1 | 4 | 5 | 1 | 7 | 9 | 1 | 0 | 0 | 2 | |
78 | 86 | 75 | 85 | 54 | 43 | 70 | 57 | 47 | 66 | 50 | 41 | 77 | 79 | 74 | 77 | |
0 | 0 | 350 | 0 | 450 | 1050 | 0 | 1200 | 1500 | 1950 | 2450 | 2600 | 2100 | 900 | 900 | 750 | |
 | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
A light covering of new snow, mostly falling on Wed night. Freeze-thaw conditions (max 8°C on Sat morning, min -5°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed night, calm by Sat afternoon).
Light rain (total 8.0mm), mostly falling on Sun night. Very mild (max 14°C on Sun afternoon, min 2°C on Mon night). Wind will be generally light.
Latest snow reports near Koshi Kogen:
It is snowing steadily at Iwappara. from Iwappara
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 1 cm |
| Last snowfall: | 16 Feb 2026 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.0 | Powder days Fresh snow, limited sun, any wind. |
0.2 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Koshi Kogen at the specific elevation of 392 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Koshi Kogen. 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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