Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 20.0mm), heaviest during Wed afternoon. Freeze-thaw conditions (max 9°C on Wed afternoon, min 0°C on Thu night). Winds decreasing (strong winds from the SW on Wed afternoon, light winds from the NNW by Fri night).
Osa Weather (Days 4-6): Some drizzle, heaviest during Mon night. Mild temperatures (max 8°C on Sun morning, min 3°C on Sat morning). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 5 |  | ||||
| Bottom Lift: | 4 | |
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  |  |  | | | | | | | |  | |
light rain | mod. rain | mod. rain | light rain | rain shwrs | clear | cloudy | some clouds | some clouds | clear | clear | clear | some clouds | cloudy | clear | cloudy | some clouds | light rain | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
1 | 6 | 10 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
max °C | 6 | 9 | 9 | 2 | 3 | 1 | 2 | 2 | 1 | 6 | 6 | 4 | 8 | 8 | 7 | 8 | 8 | 7 |
min °C | 5 | 7 | 3 | 2 | 2 | 0 | 1 | 1 | 0 | 3 | 5 | 3 | 5 | 7 | 6 | 7 | 7 | 5 |
0 | 2 | -2 | -2 | -2 | -6 | -5 | -5 | -4 | 3 | 5 | -1 | 2 | 4 | 2 | 5 | 7 | 5 | |
87 | 98 | 98 | 96 | 86 | 55 | 62 | 54 | 57 | 25 | 49 | 34 | 39 | 40 | 30 | 32 | 59 | 69 | |
2450 | 2900 | 2550 | 1350 | 1350 | 1250 | 1150 | 1300 | 1250 | 1450 | 1850 | 1850 | 1800 | 2150 | 2250 | 2200 | 2350 | 2250 | |
 | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — |
 | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — |
Heavy rain (total 20.0mm), heaviest during Wed afternoon. Freeze-thaw conditions (max 9°C on Wed afternoon, min 0°C on Thu night). Winds decreasing (strong winds from the SW on Wed afternoon, light winds from the NNW by Fri night).
Some drizzle, heaviest during Mon night. Mild temperatures (max 8°C on Sun morning, min 3°C on Sat morning). Wind will be generally light.
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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