Sign In with AppleBy using Snow-Forecast, you agree to our Terms & Services.
Don't have an account? Join now
Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 13.0mm), heaviest on Sat night. Freeze-thaw conditions (max 12°C on Sat afternoon, min 0°C on Sun night). Wind will be generally light.
Osa Weather (Days 4-6): Heavy rain (total 21.0mm), heaviest during Wed morning. Later becoming colder with a dusting of snow on Thu afternoon. Freeze-thaw conditions (max 10°C on Tue night, min -2°C on Thu night). Winds increasing (light winds from the NNW on Thu morning, strong winds from the NW by Thu night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 11 |  | ||||
| Bottom Lift: | 13 | |
Latest snow reports near Osa:
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  | |  |  | | |  | |  | | |  |  | |
rain shwrs | some clouds | mod. rain | mod. rain | cloudy | snow shwrs | some clouds | clear | clear | some clouds | cloudy | light rain | mod. rain | light rain | light rain | light rain | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | |
1 | — | 6 | 6 | — | — | — | — | — | — | — | 1 | 9 | 4 | 5 | 1 | 1 | — | |
max °C | 11 | 12 | 11 | 5 | 4 | 1 | 2 | 2 | 4 | 8 | 8 | 10 | 9 | 9 | 7 | 5 | 4 | 0 |
min °C | 10 | 11 | 10 | 5 | 3 | 0 | 1 | 1 | 2 | 5 | 7 | 7 | 9 | 8 | 5 | 4 | 1 | -2 |
7 | 9 | 8 | 2 | -2 | -4 | -4 | -2 | -1 | 2 | 3 | 2 | 6 | 6 | 2 | 1 | -6 | -10 | |
91 | 73 | 90 | 95 | 90 | 81 | 86 | 65 | 46 | 37 | 81 | 80 | 99 | 99 | 97 | 96 | 96 | 82 | |
2700 | 2750 | 2800 | 2400 | 1350 | 950 | 1050 | 1150 | 2100 | 2450 | 2300 | 2700 | 2700 | 2550 | 2200 | 1600 | 1350 | 650 | |
 | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — |
 | — | 5:02 | — | — | 5:02 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — |
Moderate rain (total 13.0mm), heaviest on Sat night. Freeze-thaw conditions (max 12°C on Sat afternoon, min 0°C on Sun night). Wind will be generally light.
Heavy rain (total 21.0mm), heaviest during Wed morning. Later becoming colder with a dusting of snow on Thu afternoon. Freeze-thaw conditions (max 10°C on Tue night, min -2°C on Thu night). Winds increasing (light winds from the NNW on Thu morning, strong winds from the NW by Thu night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
0.5 | 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
Snow
Sign up or Login to access
Nearest