Koshi Kogen Weather (Next 3 days): The snow forecast for Koshi Kogen is: Mild with light rain (total 7.0mm) on Sat morning Becoming colder with a light covering of snow, mostly falling on Mon night. Freeze-thaw conditions (max 4°C on Sat morning, min -2°C on Sun night). Winds decreasing (fresh winds from the W on Sat morning, calm by Mon night).
Koshi Kogen Weather (Days 4-6): A dusting of new snow. Freeze-thaw conditions (max 5°C on Thu morning, min -4°C on Tue night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 2 |  | ||||
| Bottom Lift: | 3 |  |
Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | | | |  | | | |  |  | |  | | | | |
mod. rain | light snow | light snow | light snow | light snow | light snow | light snow | cloudy | light snow | light snow | light snow | snow shwrs | some clouds | some clouds | some clouds | cloudy | cloudy | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | 1 | 2 | 1 | 1 | 1 | — | — | 4 | 2 | 1 | — | — | — | — | — | — | — | |
6 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 3 | 1 | 1 | 2 | 0 | 4 | 4 | 1 | 2 | 2 | -1 | 4 | 4 | -1 | 5 | 5 | 1 |
min °C | 3 | 2 | -1 | 0 | 1 | -2 | 1 | 2 | -1 | 0 | 0 | -4 | 1 | 1 | -2 | 3 | 2 | -1 |
-3 | -4 | -7 | -6 | -4 | -4 | 1 | 2 | -6 | -5 | -4 | -6 | 1 | 1 | -2 | 3 | 1 | -1 | |
77 | 76 | 71 | 73 | 66 | 76 | 72 | 60 | 79 | 82 | 64 | 83 | 66 | 53 | 77 | 66 | 60 | 79 | |
700 | 650 | 350 | 350 | 500 | 350 | 450 | 700 | 450 | 350 | 500 | 0 | 450 | 800 | 0 | 800 | 850 | 500 | |
 | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — |
Mild with light rain (total 7.0mm) on Sat morning Becoming colder with a light covering of snow, mostly falling on Mon night. Freeze-thaw conditions (max 4°C on Sat morning, min -2°C on Sun night). Winds decreasing (fresh winds from the W on Sat morning, calm by Mon night).
A dusting of new snow. Freeze-thaw conditions (max 5°C on Thu morning, min -4°C on Tue night). Wind will be generally light.
Latest snow reports near Koshi Kogen:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 5 cm |
| Last snowfall: | 6 Mar 2026 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.6 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Koshi Kogen at the specific elevation of 340 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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