Koshi Kogen Weather (Next 3 days): The snow forecast for Koshi Kogen is: A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -1°C on Fri afternoon, min -5°C on Wed afternoon). Wind will be generally light.
Koshi Kogen Weather (Days 4-6): A heavy fall of snow, heaviest during Sat night. Temperatures will be below freezing (max -1°C on Mon morning, min -5°C on Mon night). Winds decreasing (fresh winds from the WNW on Sun morning, calm by Mon night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -5 |  | ||||
| Bottom Lift: | -4 | |
Latest snow reports near Koshi Kogen:
Snow falling in Ishiuchi Maruyama. from Ishiuchi Maruyama
Snowing at Muikamachi Hakkaisan. from Muikamachi Hakkaisan
Snow falling in Muikamachi Hakkaisan. from Muikamachi Hakkaisan
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | | | | | | | | |  | | | | |
light snow | mod. snow | heavy snow | light snow | light snow | heavy snow | mod. snow | light snow | heavy snow | mod. snow | light snow | heavy snow | light snow | light snow | mod. snow | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
4 | 7 | 26 | 3 | 2 | 16 | 6 | 3 | 18 | 6 | 2 | 13 | 4 | 4 | 10 | 4 | 2 | 1 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -3 | -3 | -5 | -3 | -3 | -4 | -2 | -1 | -1 | -2 | -2 | -3 | -3 | -3 | -3 | -1 | -1 | -4 |
min °C | -4 | -5 | -5 | -4 | -4 | -5 | -4 | -5 | -4 | -2 | -4 | -4 | -4 | -4 | -4 | -2 | -2 | -5 |
-11 | -8 | -9 | -11 | -11 | -10 | -7 | -7 | -6 | -2 | -8 | -9 | -11 | -11 | -11 | -8 | -4 | -5 | |
84 | 89 | 93 | 80 | 74 | 90 | 91 | 85 | 96 | 94 | 94 | 96 | 83 | 90 | 91 | 91 | 88 | 94 | |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 150 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 250 | 0 | |
 | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 4:55 | — | — | 4:57 | — | — | 4:58 | — | — | 4:59 | — | — | 5:00 | — | — | 5:00 | — |
A heavy fall of snow, heaviest during Wed night. Temperatures will be below freezing (max -1°C on Fri afternoon, min -5°C on Wed afternoon). Wind will be generally light.
A heavy fall of snow, heaviest during Sat night. Temperatures will be below freezing (max -1°C on Mon morning, min -5°C on Mon night). Winds decreasing (fresh winds from the WNW on Sun morning, calm by Mon night).
Latest snow reports near Koshi Kogen:
Snow falling in Ishiuchi Maruyama. from Ishiuchi Maruyama
Snowing at Muikamachi Hakkaisan. from Muikamachi Hakkaisan
Snow falling in Muikamachi Hakkaisan. from Muikamachi Hakkaisan
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 26 cm |
| Last snowfall: | 20 Jan 2026 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.4 | 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 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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