Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 33.0mm), heaviest during Mon night. Freeze-thaw conditions (max 10°C on Sun afternoon, min 0°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the ESE by Mon night).
Osa Weather (Days 4-6): Moderate rain (total 16.0mm) heaviest on Fri afternoon, then becoming colder with a dusting of snow on Sat morning. Freeze-thaw conditions (max 6°C on Fri morning, min -2°C on Fri night). Winds increasing (calm on Thu afternoon, strong winds from the WNW by Sat morning).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 7 |  | ||||
| Bottom Lift: | 6 | |
Sun 1 | Monday 2 | Tuesday 3 | Wednesday 4 | Thursday 5 | Friday 6 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | | |  |  | | | | | | |  | | |
clear | cloudy | cloudy | light rain | heavy rain | light rain | light rain | light snow | light snow | light snow | some clouds | clear | clear | some clouds | cloudy | heavy rain | light snow | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
— | — | — | 2 | 28 | 2 | 1 | — | — | — | — | — | — | — | — | 12 | 4 | |
max °C | 10 | 7 | 8 | 7 | 7 | 6 | 4 | 2 | 1 | 0 | -1 | 4 | 5 | 5 | 6 | 6 | 2 |
min °C | 7 | 6 | 7 | 6 | 5 | 6 | 2 | 0 | 0 | -1 | -1 | 1 | 5 | 4 | 6 | 5 | -2 |
7 | 5 | 4 | 3 | 0 | 4 | -4 | -6 | -6 | -7 | -7 | -3 | 5 | 1 | 2 | 0 | -11 | |
47 | 56 | 68 | 72 | 98 | 97 | 96 | 96 | 87 | 93 | 85 | 58 | 50 | 54 | 74 | 93 | 97 | |
3150 | 3000 | 2550 | 2050 | 2800 | 2700 | 1450 | 1050 | 900 | 900 | 650 | 1000 | 1550 | 2200 | 2000 | 1800 | 1000 | |
 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — |
 | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — |
Heavy rain (total 33.0mm), heaviest during Mon night. Freeze-thaw conditions (max 10°C on Sun afternoon, min 0°C on Tue night). Winds increasing (calm on Sun afternoon, strong winds from the ESE by Mon night).
Moderate rain (total 16.0mm) heaviest on Fri afternoon, then becoming colder with a dusting of snow on Sat morning. Freeze-thaw conditions (max 6°C on Fri morning, min -2°C on Fri night). Winds increasing (calm on Thu afternoon, strong winds from the WNW by Sat morning).
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. |
|---|---|
0.2 | Powder days Fresh snow, limited sun, any wind. |
0.5 | 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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