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Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 9.0mm), mostly falling on Mon afternoon. Freeze-thaw conditions (max 5°C on Tue morning, min -2°C on Tue night). Mainly fresh winds.
Osa Weather (Days 4-6): A light covering of new snow, mostly falling on Fri night. Temperatures will be below freezing (max -2°C on Wed morning, min -7°C on Fri afternoon). Winds increasing (light winds from the NW on Wed night, strong winds from the WNW by Fri afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -2 |  | ||||
| Bottom Lift: | 1 | |
Latest snow reports near Osa:
Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | Friday 2 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
| |  |  |  |  | |  | | | |  |  |  |  | | | | |
snow shwrs | snow shwrs | some clouds | cloudy | light rain | light rain | light rain | rain shwrs | some clouds | cloudy | cloudy | cloudy | some clouds | light snow | light snow | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | |
— | — | — | — | 2 | 4 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 2 | 1 | 4 | 4 | 4 | 5 | 3 | 1 | -2 | -3 | -4 | -3 | -3 | -5 | -5 | -6 | -4 |
min °C | 0 | -1 | -1 | 2 | 4 | 3 | 4 | 2 | -2 | -3 | -4 | -4 | -3 | -4 | -6 | -5 | -7 | -6 |
-4 | -5 | -5 | -3 | -1 | -2 | 0 | -2 | -9 | -11 | -10 | -10 | -10 | -12 | -15 | -14 | -17 | -15 | |
86 | 78 | 85 | 83 | 94 | 94 | 96 | 94 | 90 | 86 | 80 | 88 | 83 | 78 | 81 | 84 | 81 | 89 | |
800 | 1050 | 900 | 1300 | 1450 | 1550 | 1600 | 1350 | 900 | 500 | 550 | 350 | 500 | 500 | 250 | 250 | 200 | 200 | |
 | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — |
 | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — | — | 5:10 | — |
Light rain (total 9.0mm), mostly falling on Mon afternoon. Freeze-thaw conditions (max 5°C on Tue morning, min -2°C on Tue night). Mainly fresh winds.
A light covering of new snow, mostly falling on Fri night. Temperatures will be below freezing (max -2°C on Wed morning, min -7°C on Fri afternoon). Winds increasing (light winds from the NW on Wed night, strong winds from the WNW by Fri afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 12 cm |
| Last snowfall: | 27 Dec 2025 |
| Snow Alerts | Create Alert |
0.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
0.8 | 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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