Next 3 days weather summary:Moderate rain (total 19.0mm), heaviest on Sat afternoon. Warm (max 26°C on Sat morning, min 21°C on Mon night). Wind will be generally light. | Days 4-6 weather summary:Light rain (total 6.0mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 22°C on Tue night). Wind will be generally light. | |||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | | | | | |  |  | | | | | | |
t-storm risk | t-storm risk | some clouds | some clouds | t-storm risk | rain shwrs | t-storm risk | t-storm risk | rain shwrs | some clouds | t-storm risk | clear | clear | t-storm risk | clear | some clouds | t-storm risk | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 2 | 5 | — | — | 3 | 1 | 3 | 4 | 1 | — | 2 | — | — | 2 | — | — | 2 | — |
max °C | 26 | 25 | 23 | 25 | 26 | 23 | 24 | 24 | 23 | 27 | 26 | 23 | 26 | 25 | 24 | 27 | 25 | 23 |
min °C | 24 | 25 | 22 | 24 | 24 | 22 | 23 | 24 | 21 | 24 | 24 | 22 | 24 | 25 | 22 | 24 | 25 | 23 |
chill °C | 24 | 25 | 22 | 24 | 24 | 22 | 23 | 24 | 21 | 24 | 24 | 22 | 24 | 25 | 22 | 24 | 25 | 23 |
Humid % | 84 | 82 | 86 | 81 | 81 | 87 | 87 | 92 | 85 | 69 | 76 | 82 | 77 | 81 | 83 | 81 | 83 | 73 |
Freeze m | 5500 | 5500 | 5550 | 5400 | 5550 | 5450 | 5350 | 5500 | 5450 | 5350 | 5300 | 5400 | 5250 | 5250 | 5450 | 5350 | 5350 | 5350 |
 | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:21 | — | — | 7:20 | — |
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.
Sign up or Login to access
Nearest