Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 2.0mm), mostly falling on Thu night. Mild temperatures (max 8°C on Fri afternoon, min 2°C on Sat night). Winds decreasing (strong winds from the W on Thu night, light winds from the WSW by Sun afternoon).
Osa Weather (Days 4-6): Drizzle on Mon night followed by colder weather and a moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 4°C on Mon morning, min -9°C on Wed afternoon). Winds increasing (light winds from the WSW on Sun night, near gales from the WNW by Wed afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 6 |  | ||||
| Bottom Lift: | 8 | |
Latest snow reports near Osa:
Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  | |  |  | | | | | | |  |  |  | |  | |
rain shwrs | clear | clear | clear | some clouds | some clouds | clear | clear | clear | clear | some clouds | cloudy | light snow | light snow | light snow | mod. snow | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 2 | 8 | |
2 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | |
max °C | 6 | 7 | 8 | 6 | 5 | 3 | 3 | 4 | 5 | 3 | 4 | 3 | 3 | -2 | -3 | -4 |
min °C | 3 | 6 | 6 | 5 | 4 | 3 | 2 | 3 | 3 | 2 | 3 | 2 | -1 | -3 | -4 | -6 |
-2 | 3 | 3 | 0 | -1 | -1 | -1 | 0 | 1 | -2 | -1 | -3 | -8 | -10 | -10 | -14 | |
89 | 32 | 28 | 26 | 77 | 82 | 47 | 31 | 39 | 41 | 47 | 80 | 98 | 82 | 98 | 96 | |
1850 | 2150 | 2100 | 2300 | 1600 | 1400 | 1750 | 2050 | 2050 | 1900 | 1800 | 1400 | 1300 | 700 | 650 | 300 | |
 | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — |
 | — | — | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — |
Light rain (total 2.0mm), mostly falling on Thu night. Mild temperatures (max 8°C on Fri afternoon, min 2°C on Sat night). Winds decreasing (strong winds from the W on Thu night, light winds from the WSW by Sun afternoon).
Drizzle on Mon night followed by colder weather and a moderate fall of snow, heaviest on Tue night. Freeze-thaw conditions (max 4°C on Mon morning, min -9°C on Wed afternoon). Winds increasing (light winds from the WSW on Sun night, near gales from the WNW by Wed afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 11 Jan 2026 |
| Snow Alerts | Create Alert |
0.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.4 | Powder days Fresh snow, limited sun, any wind. |
1.0 | 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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