Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 11.0mm), heaviest on Tue afternoon. Freeze-thaw conditions (max 11°C on Sun afternoon, min 0°C on Sun night). Winds decreasing (strong winds from the WSW on Sun night, light winds from the WSW by Mon night).
Osa Weather (Days 4-6): Heavy rain (total 54.0mm), heaviest during Tue night. Very mild (max 11°C on Thu afternoon, min 5°C on Tue night). Winds increasing (light winds from the S on Thu afternoon, strong winds from the SE by Fri afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 6 |  | ||||
| Bottom Lift: | 5 | |
Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  | | |  |  |  |  | | | | | |  | |
clear | clear | some clouds | rain shwrs | clear | clear | some clouds | cloudy | mod. rain | heavy rain | cloudy | clear | clear | some clouds | cloudy | light rain | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 1 | — | — | — | — | 10 | 27 | — | — | — | — | — | 1 | |
max °C | 6 | 10 | 11 | 9 | 5 | 7 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 10 | 11 | 9 |
min °C | 6 | 7 | 10 | 0 | 2 | 6 | 6 | 8 | 8 | 5 | 6 | 7 | 6 | 7 | 9 | 8 |
2 | 2 | 6 | -6 | -3 | 4 | 4 | 4 | 3 | 2 | 4 | 4 | 3 | 5 | 8 | 5 | |
44 | 80 | 76 | 78 | 30 | 16 | 20 | 47 | 97 | 100 | 84 | 77 | 67 | 75 | 76 | 82 | |
2750 | 2650 | 3050 | 2250 | 1700 | 2650 | 2900 | 2700 | 2700 | 2700 | 2550 | 3100 | 3150 | 3350 | 3350 | 2800 | |
 | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — |
 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — |
Moderate rain (total 11.0mm), heaviest on Tue afternoon. Freeze-thaw conditions (max 11°C on Sun afternoon, min 0°C on Sun night). Winds decreasing (strong winds from the WSW on Sun night, light winds from the WSW by Mon night).
Heavy rain (total 54.0mm), heaviest during Tue night. Very mild (max 11°C on Thu afternoon, min 5°C on Tue night). Winds increasing (light winds from the S on Thu afternoon, strong winds from the SE by Fri afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 18 Feb 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | 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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