Osa Weather (Next 3 days): The snow forecast for Osa is: A dusting of snow. Milder later with heavy rain (total 20.0mm) on Fri morning. Freeze-thaw conditions (max 6°C on Thu afternoon, min -2°C on Tue night). Winds decreasing (strong winds from the N on Tue afternoon, calm by Thu afternoon).
Osa Weather (Days 4-6): Moderate rain (total 10.0mm) heaviest on Fri afternoon, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 3°C on Fri afternoon, min -4°C on Fri night). Winds decreasing (strong winds from the W on Fri night, light winds from the NW by Sun morning).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 3 |  | ||||
| Bottom Lift: | 5 | |
Tue 3 | Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  | |  |  |  | | | |  | | | | |
light snow | light snow | light snow | light snow | some clouds | clear | clear | cloudy | heavy rain | mod. rain | light snow | light snow | light snow | snow shwrs | clear | clear | cloudy | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | — | |
1 | — | — | — | — | — | — | — | 19 | 10 | — | — | — | — | — | — | — | |
max °C | 3 | 0 | -2 | -1 | 0 | 4 | 6 | 6 | 4 | 3 | 0 | -3 | -2 | -3 | 1 | 2 | 1 |
min °C | 1 | -2 | -2 | -2 | -1 | 3 | 5 | 4 | 3 | 3 | -4 | -3 | -2 | -3 | -1 | 1 | 0 |
-6 | -9 | -9 | -8 | -7 | 0 | 3 | -1 | -3 | -3 | -13 | -10 | -8 | -9 | -3 | -2 | -4 | |
98 | 95 | 96 | 95 | 72 | 35 | 39 | 43 | 96 | 97 | 97 | 90 | 89 | 95 | 56 | 52 | 32 | |
1450 | 950 | 800 | 850 | 750 | 1800 | 2100 | 2200 | 2100 | 1600 | 900 | 650 | 800 | 650 | 800 | 1300 | 1300 | |
 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — |
A dusting of snow. Milder later with heavy rain (total 20.0mm) on Fri morning. Freeze-thaw conditions (max 6°C on Thu afternoon, min -2°C on Tue night). Winds decreasing (strong winds from the N on Tue afternoon, calm by Thu afternoon).
Moderate rain (total 10.0mm) heaviest on Fri afternoon, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 3°C on Fri afternoon, min -4°C on Fri night). Winds decreasing (strong winds from the W on Fri night, light winds from the NW by Sun 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. |
|---|---|
0.4 | Powder days Fresh snow, limited sun, any wind. |
0.7 | 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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