Next 3 days weather summary:Light rain (total 5.0mm), mostly falling on Mon afternoon. Warm (max 28°C on Mon afternoon, min 23°C on Mon night). Wind will be generally light. | Days 4-6 weather summary:Moderate rain (total 11.0mm), heaviest on Tue morning. Warm (max 27°C on Thu afternoon, min 22°C on Tue night). Winds increasing (calm on Tue morning, strong winds from the ESE by Thu night). | |||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | |  |  | | | |  | | | | | | |
some clouds | some clouds | some clouds | clear | clear | clear | clear | t-storm risk | rain shwrs | t-storm risk | t-storm risk | rain shwrs | rain shwrs | t-storm risk | rain shwrs | clear | some clouds | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | 3 | 2 | 2 | 2 | 1 | 2 | 3 | 1 | — | — | — |
max °C | 26 | 25 | 24 | 27 | 27 | 24 | 27 | 28 | 24 | 24 | 24 | 23 | 24 | 25 | 23 | 26 | 27 | 24 |
min °C | 25 | 25 | 24 | 26 | 26 | 24 | 25 | 25 | 23 | 24 | 24 | 22 | 23 | 24 | 22 | 24 | 25 | 23 |
chill °C | 25 | 25 | 24 | 26 | 26 | 24 | 25 | 25 | 23 | 24 | 24 | 22 | 23 | 24 | 22 | 24 | 25 | 23 |
Humid % | 71 | 71 | 70 | 68 | 71 | 73 | 69 | 69 | 92 | 87 | 87 | 95 | 87 | 82 | 78 | 72 | 61 | 71 |
Freeze m | 5550 | 5550 | 5550 | 5450 | 5550 | 5600 | 5550 | 5550 | 5600 | 5600 | 5600 | 5650 | 5450 | 5500 | 5550 | 5300 | 5350 | 5550 |
 | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — |
 | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — |
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 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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