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Osa Weather (Next 3 days): The snow forecast for Osa is: Some drizzle, heaviest during Mon morning. Freeze-thaw conditions (max 5°C on Wed afternoon, min -1°C on Mon night). Winds decreasing (fresh winds from the WNW on Mon morning, light winds from the W by Wed afternoon).
Osa Weather (Days 4-6): A light covering of new snow, mostly falling on Sat night. Becoming milder with moderate rain (total 16.0mm) heaviest on Sat night. Freeze-thaw conditions (max 6°C on Thu morning, min -5°C on Fri afternoon). Winds increasing (light winds from the SE on Sat morning, strong winds from the SSW by Sat night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 6 |  | ||||
| Bottom Lift: | 8 | |
Latest snow reports near Osa:
Monday 8 | Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | |  |  | |  |  |  | | | |  | |
light rain | some clouds | clear | clear | clear | clear | some clouds | some clouds | cloudy | cloudy | light rain | snow shwrs | light snow | snow shwrs | clear | clear | some clouds | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | 2 | |
1 | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | 13 | |
max °C | 4 | 2 | 0 | 1 | 1 | 1 | 4 | 5 | 5 | 6 | 6 | 4 | -3 | -4 | -2 | 3 | 3 | 5 |
min °C | 3 | 0 | -1 | 0 | 0 | 0 | 3 | 4 | 5 | 5 | 5 | -2 | -3 | -5 | -5 | 0 | 3 | 2 |
-2 | -5 | -5 | -4 | -5 | -5 | 0 | 2 | 3 | 1 | 0 | -9 | -11 | -13 | -12 | -3 | 0 | -4 | |
88 | 82 | 86 | 80 | 65 | 52 | 35 | 30 | 29 | 34 | 63 | 89 | 96 | 92 | 64 | 41 | 43 | 98 | |
1600 | 1250 | 900 | 1050 | 1150 | 1200 | 1600 | 1900 | 2200 | 1850 | 1800 | 1300 | 600 | 500 | 0 | 1100 | 1700 | 1600 | |
 | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — |
 | — | 4:59 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — |
Some drizzle, heaviest during Mon morning. Freeze-thaw conditions (max 5°C on Wed afternoon, min -1°C on Mon night). Winds decreasing (fresh winds from the WNW on Mon morning, light winds from the W by Wed afternoon).
A light covering of new snow, mostly falling on Sat night. Becoming milder with moderate rain (total 16.0mm) heaviest on Sat night. Freeze-thaw conditions (max 6°C on Thu morning, min -5°C on Fri afternoon). Winds increasing (light winds from the SE on Sat morning, strong winds from the SSW by Sat night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 Dec 2025 |
| Snow Alerts | Create Alert |
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
0.7 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 1030 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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