Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  |  | | | |  |  |  | | | |
clear | clear | cloudy | some clouds | cloudy | light rain | light rain | rain shwrs | light rain | some clouds | light rain | mod. rain | rain shwrs | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | 2 | 1 | 1 | 1 | — | 1 | 7 | 1 | — | — | — |
max °C | 16 | 19 | 18 | 18 | 19 | 19 | 17 | 19 | 19 | 18 | 19 | 16 | 12 | 9 | 8 | 10 |
min °C | 14 | 18 | 18 | 17 | 18 | 18 | 17 | 18 | 18 | 17 | 19 | 13 | 6 | 7 | 7 | 7 |
chill °C | 12 | 17 | 17 | 16 | 17 | 18 | 16 | 18 | 17 | 16 | 18 | 10 | 3 | 4 | 4 | 4 |
Humid % | 58 | 64 | 85 | 79 | 86 | 83 | 94 | 86 | 84 | 79 | 83 | 97 | 86 | 78 | 78 | 75 |
Freeze m | 4250 | 4400 | 4350 | 4450 | 4300 | 4250 | 4300 | 4200 | 4200 | 4300 | 4300 | 4150 | 4200 | 3850 | 4100 | 3900 |
 | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — |
 | — | — | 5:32 | — | — | 5:31 | — | — | 5:30 | — | — | 5:30 | — | — | 5:28 | — |
Next 4 days weather summary:Light rain (total 5.0mm), mostly falling on Mon afternoon. Very mild (max 19°C on Sun morning, min 14°C on Sat night). Mainly strong winds. | Days 5-7 weather summary:Light rain (total 9.0mm), mostly falling on Wed afternoon. Very mild (max 19°C on Wed morning, min 6°C on Wed night). Winds decreasing (fresh winds from the WSW on Wed morning, light winds from the SE by Fri afternoon). | |||||||||||||||
SnowPro
Hourly & 16-day forecastsView past weatherFast, ad-free browsingSnow hindcasts & HistoryAvalanche 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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