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Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 12.0mm) heaviest on Sat night, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 5°C on Sat night, min -1°C on Sun morning). Winds decreasing (strong winds from the WNW on Sun afternoon, light winds from the WNW by Mon night).
Osa Weather (Days 4-6): Moderate rain (total 11.0mm), heaviest on Wed afternoon. Mild temperatures (max 9°C on Fri morning, min 3°C on Wed night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 5 |  | ||||
| Bottom Lift: | 4 | |
Latest snow reports near Osa:
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  | | |  |  | | | | |  | |
light snow | light snow | light snow | light snow | some clouds | clear | some clouds | some clouds | some clouds | rain shwrs | light rain | light rain | rain shwrs | clear | clear | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
12 | — | — | — | — | — | — | — | — | 4 | 1 | 5 | 1 | — | — | — | |
max °C | 5 | 0 | 0 | 0 | 1 | 1 | 2 | 4 | 5 | 4 | 6 | 5 | 4 | 6 | 7 | 6 |
min °C | 1 | -1 | 0 | -1 | 0 | 0 | 1 | 3 | 4 | 4 | 4 | 5 | 3 | 4 | 5 | 5 |
-6 | -9 | -8 | -8 | -6 | -4 | -2 | -2 | 0 | 0 | 0 | 4 | 1 | 4 | 5 | 4 | |
96 | 89 | 89 | 84 | 83 | 79 | 47 | 87 | 81 | 95 | 90 | 99 | 91 | 64 | 72 | 57 | |
2300 | 800 | 850 | 750 | 850 | 1000 | 1400 | 1350 | 1400 | 1500 | 1600 | 1700 | 1650 | 1750 | 1950 | 2550 | |
 | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — |
 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — |
Moderate rain (total 12.0mm) heaviest on Sat night, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 5°C on Sat night, min -1°C on Sun morning). Winds decreasing (strong winds from the WNW on Sun afternoon, light winds from the WNW by Mon night).
Moderate rain (total 11.0mm), heaviest on Wed afternoon. Mild temperatures (max 9°C on Fri morning, min 3°C on Wed night). Wind will be generally light.
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 Dec 2025 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
0.4 | 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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