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Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 20.0mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sun morning. Freeze-thaw conditions (max 6°C on Sat morning, min -2°C on Fri night). Winds increasing (calm on Fri night, near gales from the WNW by Sun morning).
Osa Weather (Days 4-6): Moderate rain (total 10.0mm), heaviest on Wed afternoon. Freeze-thaw conditions (max 5°C on Tue morning, min 0°C on Mon night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -2 |  | ||||
| Bottom Lift: | -2 | |
Latest snow reports near Osa:
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  |  | |  | |  | | | |  | | | | |
clear | clear | light rain | heavy rain | light snow | light snow | light snow | light snow | some clouds | clear | some clouds | light rain | light rain | light rain | light rain | light rain | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
— | — | 2 | 18 | — | — | — | — | — | — | — | 2 | 3 | 1 | 3 | 1 | |
max °C | 0 | 6 | 5 | 6 | 0 | 0 | 0 | 1 | 1 | 2 | 5 | 5 | 4 | 5 | 4 | 3 |
min °C | -2 | 3 | 4 | 2 | 0 | 0 | -1 | 0 | 0 | 0 | 4 | 4 | 4 | 5 | 4 | 2 |
-7 | 0 | -1 | -5 | -8 | -8 | -9 | -7 | -5 | -4 | -1 | 0 | 0 | 2 | 2 | -1 | |
50 | 42 | 70 | 98 | 87 | 85 | 84 | 84 | 84 | 56 | 89 | 92 | 93 | 90 | 94 | 91 | |
550 | 1750 | 1600 | 2150 | 850 | 850 | 800 | 850 | 1000 | 1200 | 1350 | 1550 | 1550 | 1500 | 1500 | 1350 | |
 | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — |
 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — |
Heavy rain (total 20.0mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Sun morning. Freeze-thaw conditions (max 6°C on Sat morning, min -2°C on Fri night). Winds increasing (calm on Fri night, near gales from the WNW by Sun morning).
Moderate rain (total 10.0mm), heaviest on Wed afternoon. Freeze-thaw conditions (max 5°C on Tue morning, min 0°C on Mon night). Wind will be generally light.
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 Dec 2025 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
0.4 | 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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