Friday 30 | Saturday 31 | Sunday 1 | Monday 2 | Tuesday 3 | Wednesday 4 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | |  |  | | | | |  | | | | |
light rain | rain shwrs | rain shwrs | rain shwrs | clear | clear | cloudy | cloudy | mod. rain | heavy rain | light rain | rain shwrs | rain shwrs | clear | cloudy | cloudy | cloudy | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 4 | 1 | 4 | 1 | — | — | — | — | 9 | 12 | 2 | 1 | 1 | — | — | — | — | — |
max °C | 13 | 12 | 9 | 10 | 10 | 10 | 12 | 12 | 11 | 11 | 9 | 7 | 8 | 8 | 8 | 11 | 11 | 11 |
min °C | 12 | 10 | 8 | 9 | 8 | 8 | 11 | 10 | 10 | 9 | 8 | 6 | 7 | 7 | 8 | 10 | 10 | 11 |
chill °C | 9 | 7 | 4 | 6 | 4 | 5 | 10 | 8 | 8 | 6 | 4 | 2 | 4 | 5 | 7 | 8 | 10 | 9 |
Humid % | 91 | 84 | 95 | 78 | 75 | 62 | 33 | 60 | 63 | 100 | 98 | 85 | 87 | 76 | 39 | 44 | 50 | 50 |
Freeze m | 3250 | 3250 | 2750 | 2500 | 3050 | 3650 | 3650 | 3600 | 3750 | 3900 | 3700 | 3300 | 3400 | 3300 | 3500 | 3600 | 3300 | 3150 |
 | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — |
 | — | 5:19 | — | — | 5:17 | — | — | 5:16 | — | — | 5:15 | — | — | 5:15 | — | — | 5:15 | — |
Next 3 days weather summary:Moderate rain (total 19.0mm), heaviest on Sun night. Very mild (max 13°C on Fri morning, min 8°C on Fri night). Winds decreasing (fresh winds from the SW on Fri morning, light winds from the W by Sun morning). | Days 4-6 weather summary:Moderate rain (total 16.0mm), heaviest on Mon morning. Very mild (max 11°C on Mon morning, min 6°C on Mon night). Winds decreasing (fresh winds from the NW on Mon afternoon, calm by Wed 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 1030 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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