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Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 23.0mm), heaviest during Wed afternoon. Very mild (max 11°C on Fri morning, min 2°C on Tue afternoon). Wind will be generally light.
Osa Weather (Days 4-6): Moderate rain (total 19.0mm), heaviest on Sun morning. Very mild (max 13°C on Sat morning, min 5°C on Sun night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 1 |  | ||||
| Bottom Lift: | 2 | |
Latest snow reports near Osa:
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  |  |  | | | | |  | | |  |  | |
some clouds | rain shwrs | mod. rain | heavy rain | light rain | rain shwrs | clear | clear | clear | some clouds | clear | some clouds | cloudy | light rain | heavy rain | light rain | cloudy | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | 1 | 6 | 12 | 3 | 1 | — | — | — | — | — | — | — | 4 | 11 | 3 | — | |
max °C | 3 | 4 | 5 | 5 | 3 | 5 | 6 | 6 | 11 | 9 | 8 | 13 | 13 | 11 | 10 | 8 | 6 |
min °C | 2 | 2 | 4 | 4 | 2 | 3 | 5 | 5 | 8 | 8 | 7 | 10 | 11 | 10 | 9 | 7 | 5 |
-3 | -3 | -1 | 0 | -3 | 0 | 4 | 5 | 6 | 5 | 3 | 8 | 9 | 8 | 7 | 5 | 2 | |
89 | 94 | 97 | 97 | 93 | 89 | 40 | 49 | 42 | 65 | 82 | 76 | 68 | 93 | 99 | 98 | 98 | |
1300 | 1450 | 1750 | 1750 | 1250 | 1250 | 2050 | 2650 | 2800 | 2650 | 2700 | 2700 | 2850 | 2900 | 2800 | 2800 | 2250 | |
 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — |
 | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:02 | — | — | 5:02 | — |
Heavy rain (total 23.0mm), heaviest during Wed afternoon. Very mild (max 11°C on Fri morning, min 2°C on Tue afternoon). Wind will be generally light.
Moderate rain (total 19.0mm), heaviest on Sun morning. Very mild (max 13°C on Sat morning, min 5°C on Sun night). Wind will be generally light.
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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