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Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 8.0mm), mostly falling on Wed afternoon. Very mild (max 12°C on Sat morning, min 2°C on Wed night). Wind will be generally light.
Osa Weather (Days 4-6): Moderate rain (total 18.0mm) heaviest on Mon morning, then becoming colder with a dusting of snow on Mon morning. Very mild (max 12°C on Sat afternoon, min 1°C on Mon afternoon). Winds decreasing (fresh winds from the NE on Mon morning, calm by Tue morning).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 2 |  | ||||
| Bottom Lift: | 4 |  |
Latest snow reports near Osa:
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  | | |  |  | | |  |  | | |
mod. rain | light rain | clear | clear | clear | some clouds | cloudy | some clouds | some clouds | cloudy | mod. rain | light rain | light rain | light rain | light snow | snow shwrs | clear | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | |
6 | 2 | — | — | — | — | — | — | — | — | 6 | 4 | 2 | 2 | 4 | — | — | |
max °C | 5 | 3 | 5 | 6 | 6 | 10 | 9 | 9 | 12 | 12 | 11 | 10 | 7 | 6 | 2 | 2 | 3 |
min °C | 3 | 2 | 4 | 6 | 5 | 8 | 7 | 7 | 10 | 11 | 10 | 8 | 6 | 3 | 2 | 1 | 1 |
-2 | -3 | 1 | 4 | 5 | 6 | 3 | 3 | 8 | 9 | 7 | 7 | 4 | -2 | -4 | -5 | -4 | |
96 | 88 | 75 | 52 | 49 | 45 | 64 | 79 | 82 | 74 | 91 | 89 | 98 | 97 | 97 | 96 | 70 | |
1600 | 1200 | 1400 | 1950 | 2550 | 2750 | 2600 | 2800 | 2700 | 2850 | 2900 | 2800 | 2550 | 1950 | 1250 | 1100 | 1250 | |
 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — |
 | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:02 | — | — | 5:02 | — | — | 5:04 | — |
Light rain (total 8.0mm), mostly falling on Wed afternoon. Very mild (max 12°C on Sat morning, min 2°C on Wed night). Wind will be generally light.
Moderate rain (total 18.0mm) heaviest on Mon morning, then becoming colder with a dusting of snow on Mon morning. Very mild (max 12°C on Sat afternoon, min 1°C on Mon afternoon). Winds decreasing (fresh winds from the NE on Mon morning, calm by Tue morning).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Dec 2025 |
| Snow Alerts | Create Alert |
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
0.5 | 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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