Next 3 days weather summary:Light rain (total 9.0mm), mostly falling on Sun afternoon. Warm (max 27°C on Sat afternoon, min 19°C on Mon night). Wind will be generally light. | Days 4-6 weather summary:Moderate rain (total 12.0mm), heaviest on Wed afternoon. Warm (max 23°C on Thu afternoon, min 18°C on Tue night). Wind will be generally light. | |||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | | | |  |  | | |  | | | | |
some clouds | rain shwrs | some clouds | some clouds | t-storm risk | rain shwrs | rain shwrs | t-storm risk | some clouds | some clouds | clear | clear | rain shwrs | rain shwrs | light rain | some clouds | t-storm risk | rain shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 1 | — | — | 3 | 1 | 1 | 3 | — | — | — | — | 1 | 4 | 2 | — | 3 | 2 |
max °C | 26 | 27 | 24 | 25 | 26 | 22 | 23 | 23 | 21 | 22 | 21 | 19 | 21 | 21 | 21 | 22 | 23 | 21 |
min °C | 25 | 25 | 22 | 23 | 23 | 21 | 22 | 22 | 19 | 20 | 19 | 18 | 20 | 21 | 20 | 21 | 22 | 20 |
chill °C | 25 | 25 | 22 | 23 | 23 | 21 | 22 | 22 | 19 | 20 | 19 | 18 | 20 | 21 | 20 | 21 | 22 | 20 |
Humid % | 61 | 59 | 62 | 73 | 67 | 85 | 86 | 87 | 92 | 58 | 59 | 82 | 87 | 85 | 62 | 72 | 72 | 72 |
Freeze m | 5100 | 5100 | 5100 | 4900 | 5000 | 5050 | 5050 | 5200 | 5300 | 5200 | 5250 | 5150 | 4800 | 4850 | 4700 | 4500 | 4400 | 4350 |
 | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — |
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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