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Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 4.0mm) at first, then becoming colder with a dusting of snow on Tue morning. Freeze-thaw conditions (max 3°C on Mon night, min -8°C on Sun night). Winds decreasing (strong winds from the WNW on Sun night, moderate winds from the WNW by Wed afternoon).
Osa Weather (Days 4-6): Light rain (total 3.0mm), mostly falling on Thu afternoon. Freeze-thaw conditions (max 7°C on Fri afternoon, min 0°C on Wed night). Winds decreasing (strong winds from the WSW on Thu afternoon, light winds from the WNW by Sat afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -8 |  | ||||
| Bottom Lift: | -5 | |
Latest snow reports near Osa:
Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  |  | |  |  | |  | |  |  | | |  | |
light snow | some clouds | cloudy | light rain | snow shwrs | some clouds | cloudy | clear | clear | some clouds | cloudy | light rain | rain shwrs | clear | clear | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 4 | — | — | — | — | — | — | — | 1 | 2 | — | — | — | |
max °C | -6 | -1 | 0 | 3 | 2 | 0 | -2 | -1 | -1 | 1 | 6 | 6 | 5 | 6 | 7 | 6 |
min °C | -8 | -5 | -1 | 1 | 2 | 0 | -5 | -3 | -2 | 0 | 3 | 6 | 2 | 5 | 6 | 5 |
-19 | -12 | -8 | -6 | -5 | -8 | -14 | -11 | -8 | -5 | -3 | 0 | -3 | 2 | 4 | 2 | |
86 | 79 | 89 | 93 | 90 | 79 | 86 | 57 | 70 | 47 | 66 | 89 | 89 | 39 | 27 | 25 | |
0 | 250 | 800 | 1200 | 1100 | 900 | 200 | 500 | 750 | 1150 | 1400 | 1800 | 1500 | 1900 | 2050 | 2300 | |
 | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — |
 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — |
Light rain (total 4.0mm) at first, then becoming colder with a dusting of snow on Tue morning. Freeze-thaw conditions (max 3°C on Mon night, min -8°C on Sun night). Winds decreasing (strong winds from the WNW on Sun night, moderate winds from the WNW by Wed afternoon).
Light rain (total 3.0mm), mostly falling on Thu afternoon. Freeze-thaw conditions (max 7°C on Fri afternoon, min 0°C on Wed night). Winds decreasing (strong winds from the WSW on Thu afternoon, light winds from the WNW by Sat afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 4 cm |
| Last snowfall: | 10 Jan 2026 |
| Snow Alerts | Create Alert |
0.6 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.4 | Powder days Fresh snow, limited sun, any wind. |
0.9 | 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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