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Osa Weather (Next 3 days): The snow forecast for Osa is: A dusting of new snow. Freeze-thaw conditions (max 2°C on Wed morning, min -4°C on Wed night). Winds increasing (light winds from the WSW on Tue night, strong winds from the WNW by Wed night).
Osa Weather (Days 4-6): Mild with light rain (total 3.0mm) on Sat afternoon Becoming colder with a light covering of snow, mostly falling on Sat night. Freeze-thaw conditions (max 3°C on Sat morning, min -7°C on Sat night). Winds increasing (light winds from the WNW on Thu night, gales from the W by Sat night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -3 |  | ||||
| Bottom Lift: | 0 | |
Latest snow reports near Osa:
Mon 5 | Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  | | | | | | | |  | |  | |
light snow | light snow | some clouds | clear | cloudy | clear | snow shwrs | light snow | light snow | light snow | snow shwrs | clear | clear | cloudy | light rain | light snow | mod. snow | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | 1 | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 5 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | |
max °C | 0 | -1 | 0 | 0 | -1 | 2 | 2 | 0 | -2 | -2 | -3 | 0 | 1 | 2 | 3 | 3 | -2 |
min °C | -2 | -3 | -1 | -1 | -2 | 1 | 1 | -4 | -3 | -3 | -4 | -1 | -1 | -1 | 3 | 0 | -7 |
-9 | -9 | -5 | -5 | -6 | -4 | -6 | -12 | -10 | -8 | -7 | -5 | -6 | -7 | -4 | -9 | -19 | |
88 | 96 | 84 | 73 | 57 | 79 | 74 | 84 | 81 | 85 | 95 | 57 | 59 | 90 | 93 | 89 | 90 | |
800 | 700 | 700 | 900 | 600 | 950 | 1050 | 450 | 550 | 600 | 0 | 600 | 1000 | 850 | 1250 | 1250 | 400 | |
 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — |
 | 5:13 | — | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — |
A dusting of new snow. Freeze-thaw conditions (max 2°C on Wed morning, min -4°C on Wed night). Winds increasing (light winds from the WSW on Tue night, strong winds from the WNW by Wed night).
Mild with light rain (total 3.0mm) on Sat afternoon Becoming colder with a light covering of snow, mostly falling on Sat night. Freeze-thaw conditions (max 3°C on Sat morning, min -7°C on Sat night). Winds increasing (light winds from the WNW on Thu night, gales from the W by Sat night).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 3 Jan 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
0.2 | 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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