Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 17.0mm) heaviest on Fri afternoon, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 6°C on Thu afternoon, min -3°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the WNW by Fri night).
Osa Weather (Days 4-6): A light covering of new snow, mostly falling on Mon night. Freeze-thaw conditions (max 2°C on Sun afternoon, min -5°C on Mon night). Winds increasing (light winds from the WNW on Sun morning, strong winds from the N by Mon night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -2 |  | ||||
| Bottom Lift: | 1 | |
Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  |  |  | | | |  | | | | | | | |
light snow | light snow | some clouds | some clouds | clear | cloudy | light rain | heavy rain | light snow | light snow | light snow | snow shwrs | clear | some clouds | cloudy | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 2 | 4 | |
— | — | — | — | — | — | 5 | 12 | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | -2 | 0 | 5 | 6 | 5 | 5 | 4 | 1 | -2 | -2 | -3 | 1 | 2 | 1 | 0 | -1 | -3 |
min °C | -2 | -2 | -2 | 3 | 6 | 5 | 4 | 3 | -3 | -3 | -3 | -4 | -1 | 1 | -1 | 0 | -2 | -5 |
-9 | -8 | -8 | 0 | 6 | 3 | -2 | -2 | -11 | -10 | -10 | -10 | -4 | -2 | -5 | -5 | -10 | -14 | |
97 | 94 | 61 | 34 | 44 | 42 | 87 | 94 | 97 | 91 | 88 | 90 | 48 | 51 | 36 | 83 | 92 | 91 | |
800 | 850 | 800 | 1800 | 1950 | 2200 | 2050 | 1750 | 950 | 650 | 800 | 600 | 850 | 1250 | 1200 | 1000 | 900 | 550 | |
 | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — |
 | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — |
Moderate rain (total 17.0mm) heaviest on Fri afternoon, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 6°C on Thu afternoon, min -3°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the WNW by Fri night).
A light covering of new snow, mostly falling on Mon night. Freeze-thaw conditions (max 2°C on Sun afternoon, min -5°C on Mon night). Winds increasing (light winds from the WNW on Sun morning, strong winds from the N by Mon night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 18 Feb 2026 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.4 | Powder days Fresh snow, limited sun, any wind. |
0.7 | 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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