Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 41.0mm), heaviest during Tue night. Very mild (max 10°C on Sun night, min 1°C on Sun night). Winds decreasing (near gales from the WSW on Sun night, calm by Wed afternoon).
Osa Weather (Days 4-6): Heavy rain (total 32.0mm), heaviest during Fri night. Later becoming colder with a dusting of snow on Sat afternoon. Very mild (max 11°C on Thu morning, min 1°C on Sat afternoon). Winds increasing (light winds from the SSE on Thu afternoon, near gales from the N by Sat morning).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 4 |  | ||||
| Bottom Lift: | 5 |  |
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  |  | | | |  |  | | | | |
rain shwrs | some clouds | clear | some clouds | cloudy | light rain | heavy rain | mod. rain | cloudy | clear | some clouds | rain shwrs | light rain | cloudy | light rain | heavy rain | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
1 | — | — | — | — | 4 | 29 | 7 | — | — | — | 1 | 2 | — | 2 | 19 | |
max °C | 10 | 6 | 7 | 7 | 10 | 8 | 9 | 9 | 8 | 8 | 11 | 11 | 10 | 10 | 10 | 9 |
min °C | 1 | 2 | 5 | 6 | 8 | 8 | 6 | 7 | 8 | 8 | 9 | 10 | 9 | 10 | 10 | 4 |
-5 | -3 | 3 | 4 | 5 | 4 | 4 | 6 | 8 | 6 | 7 | 9 | 6 | 7 | 6 | -3 | |
87 | 27 | 14 | 14 | 43 | 91 | 99 | 95 | 94 | 77 | 83 | 85 | 89 | 91 | 96 | 100 | |
2800 | 1450 | 2650 | 2900 | 2750 | 2700 | 2750 | 2900 | 3150 | 3300 | 3450 | 3450 | 2750 | 2800 | 3000 | 3050 | |
 | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — |
Heavy rain (total 41.0mm), heaviest during Tue night. Very mild (max 10°C on Sun night, min 1°C on Sun night). Winds decreasing (near gales from the WSW on Sun night, calm by Wed afternoon).
Heavy rain (total 32.0mm), heaviest during Fri night. Later becoming colder with a dusting of snow on Sat afternoon. Very mild (max 11°C on Thu morning, min 1°C on Sat afternoon). Winds increasing (light winds from the SSE on Thu afternoon, near gales from the N by Sat morning).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 18 Feb 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
0.7 | 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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