Next 3 days weather summary:Light rain (total 9.0mm), mostly falling on Sun afternoon. Warm (max 23°C on Sat afternoon, min 18°C on Sat night). Winds decreasing (fresh winds from the E on Sun night, light winds from the ENE by Mon night). | Days 4-6 weather summary:Heavy rain (total 26.0mm), heaviest during Wed night. Warm (max 24°C on Tue afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the NE on Wed afternoon, calm by Thu night). | |||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | | | | | | | |  |  |  | | |
clear | some clouds | some clouds | cloudy | light rain | rain shwrs | light rain | light rain | rain shwrs | clear | some clouds | rain shwrs | light rain | light rain | heavy rain | mod. rain | rain shwrs | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | 2 | 2 | 2 | 2 | 1 | — | — | 1 | 1 | 4 | 12 | 6 | 2 | — |
max °C | 21 | 23 | 18 | 21 | 20 | 19 | 19 | 18 | 19 | 23 | 24 | 21 | 20 | 18 | 17 | 17 | 17 | 17 |
min °C | 19 | 20 | 18 | 20 | 20 | 18 | 19 | 18 | 19 | 21 | 22 | 20 | 19 | 17 | 16 | 16 | 17 | 16 |
chill °C | 19 | 20 | 18 | 20 | 20 | 18 | 18 | 17 | 19 | 21 | 22 | 20 | 18 | 16 | 14 | 15 | 16 | 16 |
Humid % | 75 | 60 | 86 | 88 | 93 | 90 | 93 | 89 | 85 | 65 | 66 | 83 | 81 | 98 | 98 | 97 | 93 | 86 |
Freeze m | 5100 | 5000 | 5050 | 4950 | 4950 | 5050 | 5000 | 5150 | 5150 | 5150 | 5250 | 5400 | 5250 | 5300 | 5150 | 5150 | 5250 | 5200 |
 | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — |
 | — | 6:32 | — | — | 6:30 | — | — | 6:30 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — |
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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