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Osa Weather (Next 3 days): The snow forecast for Osa is: A dusting of snow turning to light rain (total 9.0mm) on Mon afternoon. Freeze-thaw conditions (max 5°C on Tue morning, min -3°C on Sat night). Wind will be generally light.
Osa Weather (Days 4-6): A light covering of new snow, mostly falling on Thu night. Temperatures will be below freezing (max 0°C on Tue night, min -4°C on Thu afternoon). Winds increasing (light winds from the NW on Wed night, fresh winds from the NW by Thu afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -4 |  | ||||
| Bottom Lift: | -2 | |
Latest snow reports near Osa:
Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  | |  | | | |  |  | | | |
light snow | snow shwrs | some clouds | some clouds | cloudy | light rain | light rain | light rain | rain shwrs | some clouds | cloudy | some clouds | cloudy | light snow | light snow | light snow | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 4 | |
— | — | — | — | — | 2 | 4 | 2 | 1 | — | — | — | — | — | — | — | |
max °C | -1 | 1 | 2 | 1 | 4 | 4 | 4 | 5 | 4 | 0 | -1 | -2 | -3 | -2 | -3 | -4 |
min °C | -3 | 0 | 0 | -1 | 2 | 4 | 4 | 5 | 2 | -2 | -2 | -3 | -3 | -2 | -4 | -4 |
-8 | -3 | -4 | -5 | -3 | -1 | -1 | 1 | -3 | -9 | -9 | -9 | -7 | -8 | -12 | -12 | |
95 | 89 | 75 | 84 | 84 | 91 | 92 | 97 | 94 | 83 | 71 | 77 | 89 | 90 | 81 | 92 | |
550 | 800 | 1100 | 950 | 1300 | 1500 | 1550 | 1600 | 1400 | 800 | 600 | 650 | 450 | 550 | 500 | 250 | |
 | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — |
 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — |
A dusting of snow turning to light rain (total 9.0mm) on Mon afternoon. Freeze-thaw conditions (max 5°C on Tue morning, min -3°C on Sat night). Wind will be generally light.
A light covering of new snow, mostly falling on Thu night. Temperatures will be below freezing (max 0°C on Tue night, min -4°C on Thu afternoon). Winds increasing (light winds from the NW on Wed night, fresh winds from the NW by Thu afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 13 cm |
| Last snowfall: | 26 Dec 2025 |
| Snow Alerts | Create Alert |
0.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
0.8 | 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.
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