Next 3 days weather summary:Mostly dry. Very mild (max 19°C on Sat morning, min 5°C on Fri night). Wind will be generally light. | Days 4-6 weather summary:Light rain (total 9.0mm), mostly falling on Sun night. Warm (max 20°C on Tue morning, min 10°C on Sat night). Wind will be generally light. | ||||||||||||||||
Wed 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  | |  | | | | |  |  |  | | | |
cloudy | some clouds | cloudy | cloudy | cloudy | clear | clear | clear | clear | clear | some clouds | cloudy | light rain | light rain | some clouds | some clouds | light rain | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | — | — | 1 | |
max °C | 16 | 10 | 16 | 14 | 9 | 14 | 14 | 7 | 19 | 19 | 11 | 19 | 16 | 11 | 16 | 15 | 11 |
min °C | 13 | 9 | 14 | 11 | 7 | 11 | 9 | 5 | 15 | 14 | 10 | 17 | 12 | 10 | 15 | 13 | 10 |
12 | 9 | 14 | 11 | 7 | 10 | 8 | 5 | 15 | 14 | 10 | 17 | 12 | 10 | 15 | 13 | 10 | |
23 | 47 | 43 | 52 | 62 | 43 | 35 | 64 | 37 | 31 | 62 | 44 | 51 | 92 | 69 | 62 | 74 | |
2500 | 2250 | 2200 | 2300 | 2350 | 1600 | 2200 | 2400 | 2550 | 2750 | 2900 | 2950 | 2550 | 2550 | 2650 | 2650 | 2650 | |
 | — | — | 5:00 | — | — | 4:58 | — | — | 4:56 | — | — | 4:56 | — | — | 4:54 | — | — |
 | 6:24 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:29 | — |
Latest snow reports near Koshi Kogen:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 12 Mar 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 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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