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Osa Weather (Next 3 days): The snow forecast for Osa is: Moderate rain (total 18.0mm), heaviest on Wed afternoon. Very mild (max 10°C on Wed morning, min 1°C on Mon afternoon). Winds increasing (calm on Tue morning, strong winds from the SSW by Wed morning).
Osa Weather (Days 4-6): Mild at first with light rain (total 2.0mm) on Thu afternoon followed by colder weather and light fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 5°C on Thu afternoon, min -7°C on Fri morning). Winds decreasing (near gales from the WNW on Thu night, calm by Sat afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 0 |  | ||||
| Bottom Lift: | 4 | |
Latest snow reports near Osa:
Mon 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | | |  |  |  | | |  |  | | | |  |  | |
some clouds | some clouds | clear | clear | some clouds | light rain | mod. rain | mod. rain | light rain | light rain | light snow | light snow | light snow | light snow | light snow | cloudy | cloudy | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | — | 2 | 4 | 2 | — | — | |
— | — | — | — | — | 2 | 8 | 7 | 1 | 2 | — | — | — | — | — | — | — | |
max °C | 1 | 2 | 3 | 8 | 9 | 10 | 9 | 9 | 6 | 5 | 0 | -6 | -4 | -4 | -4 | -2 | -2 |
min °C | 1 | 1 | 3 | 5 | 6 | 8 | 8 | 6 | 5 | 4 | -6 | -7 | -5 | -5 | -5 | -3 | -3 |
-4 | 0 | 3 | 3 | 2 | 3 | 4 | 5 | 3 | -1 | -17 | -18 | -14 | -13 | -8 | -3 | -8 | |
87 | 69 | 45 | 34 | 59 | 63 | 98 | 99 | 98 | 93 | 87 | 88 | 90 | 91 | 97 | 82 | 89 | |
1000 | 1100 | 2000 | 2650 | 2450 | 2700 | 2750 | 2700 | 2000 | 1600 | 700 | 0 | 250 | 250 | 300 | 350 | 350 | |
 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — |
 | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — | — | 5:06 | — | — | 5:06 | — |
Moderate rain (total 18.0mm), heaviest on Wed afternoon. Very mild (max 10°C on Wed morning, min 1°C on Mon afternoon). Winds increasing (calm on Tue morning, strong winds from the SSW by Wed morning).
Mild at first with light rain (total 2.0mm) on Thu afternoon followed by colder weather and light fall of snow, heaviest on Fri afternoon. Freeze-thaw conditions (max 5°C on Thu afternoon, min -7°C on Fri morning). Winds decreasing (near gales from the WNW on Thu night, calm by Sat afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
0.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.8 | Powder days Fresh snow, limited sun, any wind. |
0.8 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 865 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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