Next 4 days weather summary:Light rain (total 8.0mm), mostly falling on Thu morning. Very mild (max 19°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light. | Days 5-7 weather summary:Heavy rain (total 75.0mm), heaviest during Fri night. Warm (max 21°C on Fri morning, min 16°C on Sun afternoon). Winds increasing (calm on Fri afternoon, strong winds from the SSW by Sat afternoon). | |||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  |  | |  | |  |  |  | |  | |
some clouds | some clouds | clear | some clouds | some clouds | rain shwrs | clear | t-storm risk | t-storm risk | rain shwrs | rain shwrs | mod. rain | heavy rain | heavy rain | heavy rain | mod. rain | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | 1 | — | 4 | 3 | 2 | 1 | 7 | 24 | 14 | 16 | 8 | |
max °C | 16 | 17 | 18 | 17 | 18 | 19 | 17 | 19 | 19 | 18 | 21 | 20 | 19 | 19 | 19 | 19 |
min °C | 15 | 17 | 18 | 16 | 18 | 18 | 17 | 18 | 19 | 18 | 19 | 19 | 18 | 18 | 19 | 18 |
14 | 16 | 18 | 15 | 18 | 18 | 17 | 18 | 19 | 18 | 19 | 19 | 18 | 17 | 18 | 17 | |
75 | 62 | 69 | 83 | 74 | 82 | 87 | 90 | 88 | 84 | 84 | 88 | 95 | 95 | 97 | 99 | |
4150 | 4100 | 4200 | 4250 | 4450 | 4400 | 4400 | 4200 | 4300 | 4450 | 4600 | 4500 | 4800 | 4950 | 5150 | 4950 | |
 | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — |
 | — | — | 7:25 | — | — | 7:25 | — | — | 7:25 | — | — | 7:25 | — | — | 7:27 | — |
SnowProGo pro and carve into:
Avalanche information: Japan Avalanche Network
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 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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