Osa Weather (Next 3 days): The snow forecast for Osa is: Some drizzle, heaviest during Thu night. Mild temperatures (max 8°C on Fri morning, min 3°C on Sat night). Winds decreasing (strong winds from the WSW on Thu afternoon, calm by Sat night).
Osa Weather (Days 4-6): Mild with light rain (total 5.0mm) on Mon night Becoming colder with a light covering of snow, mostly falling on Tue night. Freeze-thaw conditions (max 7°C on Sun afternoon, min -4°C on Tue night). Winds increasing (light winds from the W on Sun morning, fresh winds from the WNW by Tue night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 1 |  | ||||
| Bottom Lift: | 1 | |
Latest snow reports near Osa:
Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  | | | | | | | | |  |  | |  | |
cloudy | some clouds | rain shwrs | clear | clear | clear | cloudy | clear | clear | clear | clear | clear | some clouds | some clouds | light rain | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | |
— | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | |
max °C | 7 | 7 | 7 | 8 | 8 | 6 | 6 | 6 | 4 | 6 | 7 | 4 | 5 | 5 | 4 | 1 | -1 | -4 |
min °C | 5 | 7 | 4 | 6 | 7 | 5 | 5 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 2 | 0 | -2 | -4 |
0 | 2 | -1 | 3 | 5 | 1 | 1 | 3 | 0 | 2 | 2 | 0 | 2 | 0 | -4 | -6 | -7 | -10 | |
73 | 80 | 84 | 40 | 26 | 26 | 63 | 54 | 60 | 53 | 57 | 60 | 69 | 78 | 99 | 95 | 85 | 91 | |
1750 | 1950 | 1850 | 2100 | 2000 | 2250 | 1750 | 1800 | 2150 | 2350 | 2250 | 1950 | 1650 | 1500 | 1400 | 900 | 800 | 200 | |
 | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — |
 | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — |
Some drizzle, heaviest during Thu night. Mild temperatures (max 8°C on Fri morning, min 3°C on Sat night). Winds decreasing (strong winds from the WSW on Thu afternoon, calm by Sat night).
Mild with light rain (total 5.0mm) on Mon night Becoming colder with a light covering of snow, mostly falling on Tue night. Freeze-thaw conditions (max 7°C on Sun afternoon, min -4°C on Tue night). Winds increasing (light winds from the W on Sun morning, fresh winds from the WNW by Tue night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 11 Jan 2026 |
| Snow Alerts | Create Alert |
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.0 | 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 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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