Saturday 31 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | |  | | | |  |  | | |  | |
heavy rain | rain shwrs | mod. rain | light rain | rain shwrs | cloudy | light rain | light rain | light rain | heavy rain | light rain | some clouds | cloudy | some clouds | cloudy | rain shwrs | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 11 | 5 | 7 | 5 | 1 | — | 2 | 3 | 2 | 12 | 2 | — | — | — | — | 1 |
max °C | 13 | 13 | 12 | 10 | 12 | 12 | 11 | 11 | 11 | 11 | 9 | 10 | 8 | 12 | 12 | 11 |
min °C | 12 | 13 | 11 | 9 | 9 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 8 | 10 | 10 | 10 |
chill °C | 12 | 11 | 8 | 7 | 9 | 11 | 10 | 10 | 11 | 9 | 9 | 9 | 8 | 10 | 10 | 9 |
Humid % | 83 | 74 | 80 | 85 | 81 | 62 | 77 | 78 | 89 | 95 | 90 | 83 | 90 | 71 | 64 | 79 |
Freeze m | 2800 | 2200 | 2100 | 1750 | 1900 | 2550 | 2350 | 2600 | 2600 | 2300 | 2000 | 2100 | 2050 | 2250 | 2600 | 2850 |
 | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | — | 4:47 | — | — | 4:46 | — | — | 4:45 | — | — | 4:45 | — | — | 4:44 | — |
Next 4 days weather summary:Heavy rain (total 36.0mm), heaviest during Fri night. Very mild (max 13°C on Fri night, min 9°C on Sat night). Wind will be generally light. | Days 5-7 weather summary:Moderate rain (total 19.0mm), heaviest on Mon night. Very mild (max 15°C on Thu morning, min 8°C on Tue night). Wind will be generally light. | |||||||||||||||
SnowPro
Hourly & 16-day forecastsView past weatherFast, ad-free browsingSnow hindcasts & HistoryAvalanche information: Japan Avalanche Network
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 444 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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