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Osa Weather (Next 3 days): The snow forecast for Osa is: Drizzle on Sat afternoon turning to light snow on Sat night. Freeze-thaw conditions (max 4°C on Sat afternoon, min -9°C on Sun morning). Winds decreasing (gales from the WSW on Sat afternoon, moderate winds from the W by Mon morning).
Osa Weather (Days 4-6): Light rain (total 7.0mm), mostly falling on Tue morning. Freeze-thaw conditions (max 5°C on Thu afternoon, min -8°C on Tue night). Winds increasing (light winds from the W on Wed night, near gales from the WSW by Thu afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 4 |  | ||||
| Bottom Lift: | 6 | |
Latest snow reports near Osa:
Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | |  | | |  | | |  | |  | | |  | |
cloudy | light snow | light snow | light snow | light snow | light snow | some clouds | some clouds | light snow | snow shwrs | snow shwrs | light snow | clear | clear | some clouds | cloudy | cloudy | rain shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | 4 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
— | 1 | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | 1 | |
max °C | 3 | 4 | -2 | -8 | -8 | -8 | -3 | -2 | 2 | 2 | 0 | -5 | -5 | -4 | 0 | 4 | 5 | 3 |
min °C | 2 | 1 | -8 | -9 | -8 | -9 | -6 | -2 | 0 | 0 | -2 | -8 | -6 | -4 | -3 | 1 | 4 | -1 |
-6 | -8 | -20 | -22 | -20 | -21 | -14 | -9 | -8 | -8 | -11 | -19 | -16 | -13 | -9 | -6 | -3 | -9 | |
89 | 90 | 94 | 73 | 71 | 90 | 69 | 86 | 91 | 97 | 84 | 91 | 61 | 72 | 51 | 48 | 89 | 83 | |
1350 | 1500 | 550 | 0 | 0 | 0 | 0 | 800 | 1100 | 1350 | 1000 | 200 | 250 | 550 | 300 | 1150 | 1750 | 1250 | |
 | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — |
 | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:22 | — |
Drizzle on Sat afternoon turning to light snow on Sat night. Freeze-thaw conditions (max 4°C on Sat afternoon, min -9°C on Sun morning). Winds decreasing (gales from the WSW on Sat afternoon, moderate winds from the W by Mon morning).
Light rain (total 7.0mm), mostly falling on Tue morning. Freeze-thaw conditions (max 5°C on Thu afternoon, min -8°C on Tue night). Winds increasing (light winds from the W on Wed night, near gales from the WSW by Thu afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 5 cm |
| Last snowfall: | 8 Jan 2026 |
| Snow Alerts | Create Alert |
0.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
1.6 | 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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