Osa Weather (Next 3 days): The snow forecast for Osa is: A dusting of new snow. Freeze-thaw conditions (max 3°C on Fri morning, min -6°C on Wed night). Winds decreasing (strong winds from the WNW on Wed afternoon, light winds from the WNW by Thu morning).
Osa Weather (Days 4-6): Mostly dry. Mild temperatures (max 9°C on Sun afternoon, min 1°C on Fri night). Winds increasing (light winds from the SW on Sat afternoon, strong winds from the SW by Sun afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -1 |  | ||||
| Bottom Lift: | 0 | |
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  | | | | | |  | | | | |  | | |
some clouds | clear | light snow | snow shwrs | clear | clear | some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -1 | -1 | -1 | -4 | -1 | 1 | 0 | 3 | 3 | 2 | 6 | 7 | 6 | 8 | 9 | 8 |
min °C | -2 | -2 | -2 | -6 | -3 | 1 | -1 | 1 | 1 | 1 | 3 | 6 | 5 | 7 | 8 | 2 |
-8 | -9 | -10 | -12 | -6 | -3 | -6 | -4 | -5 | -4 | -2 | 3 | 0 | 2 | 3 | -3 | |
88 | 76 | 68 | 92 | 54 | 52 | 90 | 85 | 55 | 56 | 56 | 45 | 38 | 79 | 83 | 86 | |
750 | 850 | 900 | 450 | 550 | 1100 | 850 | 1100 | 1400 | 1350 | 1650 | 2450 | 2800 | 2600 | 2500 | 2400 | |
 | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — |
 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — |
A dusting of new snow. Freeze-thaw conditions (max 3°C on Fri morning, min -6°C on Wed night). Winds decreasing (strong winds from the WNW on Wed afternoon, light winds from the WNW by Thu morning).
Mostly dry. Mild temperatures (max 9°C on Sun afternoon, min 1°C on Fri night). Winds increasing (light winds from the SW on Sat afternoon, strong winds from the SW by Sun afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 11 Feb 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.9 | Powder days Fresh snow, limited sun, any wind. |
1.3 | 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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