Next 3 days weather summary:Moderate rain (total 13.0mm), heaviest on Mon morning. Warm (max 25°C on Sat afternoon, min 21°C on Sat night). Wind will be generally light. | Days 4-6 weather summary:Heavy rain (total 53.0mm), heaviest during Thu night. Warm (max 26°C on Tue afternoon, min 20°C on Thu morning). Wind will be generally light. | |||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||
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 | t-storm risk | t-storm risk | clear | t-storm risk | t-storm risk | clear | clear | t-storm risk | clear | rain shwrs | t-storm risk | mod. rain | light rain | heavy rain | heavy rain | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 2 | 2 | — | 1 | 1 | — | 3 | 4 | — | — | 2 | — | 1 | 6 | 10 | 2 | 11 | 21 |
max °C | 24 | 25 | 22 | 23 | 24 | 23 | 25 | 24 | 22 | 25 | 26 | 22 | 25 | 25 | 22 | 21 | 20 | 21 |
min °C | 23 | 23 | 21 | 23 | 24 | 22 | 23 | 23 | 21 | 23 | 24 | 21 | 24 | 23 | 21 | 20 | 20 | 20 |
chill °C | 23 | 23 | 21 | 23 | 24 | 22 | 23 | 23 | 21 | 23 | 24 | 21 | 24 | 23 | 21 | 20 | 20 | 20 |
Humid % | 84 | 77 | 90 | 87 | 82 | 85 | 79 | 77 | 87 | 62 | 58 | 68 | 68 | 68 | 82 | 88 | 95 | 97 |
Freeze m | 5250 | 5350 | 5450 | 5350 | 5300 | 5250 | 5200 | 5200 | 5150 | 5000 | 5050 | 5050 | 5000 | 5000 | 4800 | 5050 | 5100 | 5200 |
 | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — |
 | — | 6:42 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — |
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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