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Osa Weather (Next 3 days): The snow forecast for Osa is: A light covering of new snow, mostly falling on Thu afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -6°C on Wed night). Winds increasing (light winds from the WNW on Thu night, strong winds from the SW by Sat morning).
Osa Weather (Days 4-6): A heavy fall of snow, heaviest during Sun afternoon. Becoming milder with light rain (total 4.0mm) on Tue morning. Freeze-thaw conditions (max 3°C on Sat afternoon, min -11°C on Sun night). Winds decreasing (gales from the W on Sat night, fresh winds from the WNW by Mon morning).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 0 |  | ||||
| Bottom Lift: | 4 | |
Latest snow reports near Osa:
Wed 7 | Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  |  | | | |  | | | | |
snow shwrs | light snow | light snow | light snow | light snow | clear | clear | cloudy | some clouds | rain shwrs | light snow | light snow | light snow | mod. snow | snow shwrs | clear | light snow | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | 3 | 2 | — | — | — | — | — | 4 | 1 | 5 | 7 | 1 | — | 1 | |
— | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | |
max °C | 0 | -1 | -5 | -5 | -5 | -2 | 0 | -1 | 3 | 3 | -1 | -8 | -8 | -9 | -7 | -4 | 1 |
min °C | -1 | -6 | -6 | -5 | -6 | -3 | -2 | -2 | 1 | 3 | -7 | -8 | -9 | -11 | -8 | -5 | -3 |
-9 | -16 | -15 | -13 | -13 | -10 | -7 | -8 | -6 | -4 | -19 | -20 | -22 | -24 | -17 | -13 | -12 | |
75 | 83 | 88 | 94 | 94 | 76 | 74 | 83 | 80 | 88 | 91 | 80 | 94 | 93 | 93 | 75 | 96 | |
1050 | 500 | 350 | 450 | 350 | 550 | 1000 | 700 | 1200 | 1400 | 600 | 0 | 0 | 0 | 0 | 400 | 850 | |
 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — |
 | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — |
A light covering of new snow, mostly falling on Thu afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -6°C on Wed night). Winds increasing (light winds from the WNW on Thu night, strong winds from the SW by Sat morning).
A heavy fall of snow, heaviest during Sun afternoon. Becoming milder with light rain (total 4.0mm) on Tue morning. Freeze-thaw conditions (max 3°C on Sat afternoon, min -11°C on Sun night). Winds decreasing (gales from the W on Sat night, fresh winds from the WNW by Mon morning).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 1 cm |
| Last snowfall: | 5 Jan 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.2 | Powder days Fresh snow, limited sun, any wind. |
1.0 | 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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