Sign In with AppleBy using Snow-Forecast, you agree to our Terms & Services.
Don't have an account? Join now
Alternatively, you can now use your Outside account to sign in to any brand in the Outside digital ecosystem, including Snow-Forecast, Surf-Forecast, and Mountain-Forecast.
Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 4.0mm) at first, then becoming colder with a dusting of snow on Wed afternoon. Freeze-thaw conditions (max 10°C on Sun night, min -4°C on Wed afternoon). Winds increasing (light winds from the WSW on Mon night, strong winds from the WNW by Wed afternoon).
Osa Weather (Days 4-6): A dusting of new snow. Freeze-thaw conditions (max 6°C on Sat afternoon, min -4°C on Wed night). Winds decreasing (near gales from the WNW on Wed night, calm by Fri night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 8 |  | ||||
| Bottom Lift: | 8 | |
Latest snow reports near Osa:
Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | Friday 5 | Saturday 6 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | |  |  | |  | | | | |  | | |  | | |
some clouds | light rain | light rain | clear | cloudy | cloudy | cloudy | light snow | light snow | light snow | light snow | light snow | light snow | light snow | some clouds | clear | cloudy | clear | clear | |
km/h | |||||||||||||||||||
Snow map |  |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 2 | 1 | — | — | 2 | — | — | — | — | — | — | |
— | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 10 | 10 | 9 | 8 | 8 | 6 | 4 | -3 | -4 | -3 | -1 | -1 | 1 | 1 | 1 | 2 | 5 | 6 | 5 |
min °C | 8 | 10 | 8 | 7 | 7 | 5 | -1 | -3 | -4 | -4 | -2 | -1 | -1 | -2 | 0 | -1 | 4 | 4 | 4 |
5 | 7 | 6 | 4 | 4 | 2 | -9 | -12 | -14 | -14 | -10 | -8 | -7 | -9 | -4 | -1 | 2 | 0 | 0 | |
77 | 89 | 86 | 53 | 53 | 89 | 88 | 86 | 90 | 83 | 81 | 79 | 96 | 81 | 75 | 64 | 29 | 41 | 54 | |
2750 | 2550 | 2500 | 2600 | 2400 | 1800 | 1300 | 550 | 400 | 400 | 600 | 800 | 1000 | 700 | 1000 | 900 | 1950 | 1700 | 2450 | |
 | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — |
 | — | — | 5:00 | — | — | 5:00 | — | — | 4:59 | — | — | 4:59 | — | — | 4:59 | — | — | 4:59 | — |
Light rain (total 4.0mm) at first, then becoming colder with a dusting of snow on Wed afternoon. Freeze-thaw conditions (max 10°C on Sun night, min -4°C on Wed afternoon). Winds increasing (light winds from the WSW on Mon night, strong winds from the WNW by Wed afternoon).
A dusting of new snow. Freeze-thaw conditions (max 6°C on Sat afternoon, min -4°C on Wed night). Winds decreasing (near gales from the WNW on Wed night, calm by Fri night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 18 Nov 2025 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.1 | 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 Osa at the specific elevation of 865 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. 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.
Snow Report
Webcams
Ski Resort Guide
Snow History
Snow Alerts
Sign up or Login to access
Nearest