Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 22.0mm), heaviest during Wed afternoon. Mild temperatures (max 7°C on Wed afternoon, min 1°C on Thu afternoon). Winds increasing (calm on Mon night, fresh winds from the SW by Wed afternoon).
Osa Weather (Days 4-6): Light rain (total 6.0mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 8°C on Sun morning, min -1°C on Thu night). Winds increasing (calm on Sat morning, fresh winds from the S by Sun afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 2 |  | ||||
| Bottom Lift: | 2 | |
Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  | | |  |  |  | |  |  |  | | | | | | |
some clouds | clear | clear | some clouds | light rain | heavy rain | mod. rain | light rain | some clouds | clear | cloudy | cloudy | some clouds | clear | clear | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | 2 | 12 | 6 | 2 | — | — | — | — | — | — | — | — | |
max °C | 3 | 5 | 6 | 5 | 5 | 7 | 7 | 3 | 3 | 1 | 0 | 1 | 1 | 6 | 6 | 4 |
min °C | 2 | 4 | 5 | 5 | 5 | 6 | 3 | 2 | 1 | -1 | 0 | 0 | 0 | 4 | 5 | 3 |
0 | 2 | 4 | 4 | 0 | 1 | -2 | -2 | -4 | -8 | -6 | -5 | -5 | 4 | 5 | -1 | |
83 | 31 | 39 | 33 | 81 | 98 | 100 | 94 | 76 | 69 | 80 | 67 | 28 | 13 | 38 | 42 | |
1650 | 1650 | 2050 | 2450 | 2200 | 2500 | 2500 | 1300 | 1400 | 1150 | 1000 | 1100 | 1250 | 1550 | 1900 | 1950 | |
 | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — |
 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — |
Heavy rain (total 22.0mm), heaviest during Wed afternoon. Mild temperatures (max 7°C on Wed afternoon, min 1°C on Thu afternoon). Winds increasing (calm on Mon night, fresh winds from the SW by Wed afternoon).
Light rain (total 6.0mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 8°C on Sun morning, min -1°C on Thu night). Winds increasing (calm on Sat morning, fresh winds from the S by Sun afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Mar 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.1 | 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 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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