Next 3 days weather summary:Mostly dry. Very mild (max 16°C on Mon morning, min 6°C on Fri night). Winds decreasing (fresh winds from the WNW on Fri afternoon, calm by Sun afternoon). | Days 4-6 weather summary:Mostly dry. Very mild (max 18°C on Wed morning, min 11°C on Mon night). Wind will be generally light. | ||||||||||||||||
Fri 8 | Saturday 9 | Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | |  | | | | | | | |  | | | | |
clear | clear | clear | clear | clear | some clouds | clear | clear | clear | some clouds | clear | some clouds | some clouds | some clouds | clear | clear | clear | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 9 | 9 | 12 | 12 | 10 | 15 | 15 | 11 | 16 | 14 | 12 | 16 | 17 | 13 | 18 | 18 | 14 |
min °C | 9 | 6 | 10 | 11 | 9 | 13 | 14 | 11 | 13 | 14 | 11 | 14 | 15 | 13 | 16 | 16 | 13 |
5 | 2 | 9 | 10 | 8 | 12 | 14 | 10 | 13 | 14 | 10 | 14 | 15 | 12 | 16 | 16 | 12 | |
57 | 62 | 46 | 40 | 30 | 25 | 36 | 41 | 61 | 72 | 69 | 65 | 50 | 69 | 50 | 52 | 62 | |
2650 | 2150 | 2300 | 2650 | 2700 | 2950 | 3150 | 3350 | 3250 | 3250 | 3350 | 3450 | 3600 | 3450 | 3500 | 3450 | 3600 | |
 | — | — | 5:13 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:09 | — | — |
 | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:02 | — | — | 7:04 | — | — | 7:05 | — |
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Mar 2026 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | 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.
Snow
Sign up or Login to access
Nearest