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Japan Weekly Snow Roundup #293
Weekly Snow News for Japan, updated 17 December 2025: Siberian cold fuels relentless powder storms, with Hokkaido leading Japan’s mid-winter surge.
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Cerro Castor at 966 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 18 Dec 2025
Now
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | | |  | | | | | | |
light snow | snow shwrs | snow shwrs | cloudy | light rain | light snow | light snow | light snow | cloudy | light snow | snow shwrs | cloudy | some clouds | some clouds | snow shwrs | light snow | light snow | snow shwrs | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
1 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | — | — | 1 | |
— | — | — | — | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | |
max °C | -3 | -2 | -2 | 0 | 2 | 1 | 1 | 2 | 0 | 0 | 2 | 1 | 2 | 5 | -1 | 1 | 1 | 1 |
min °C | -4 | -2 | -3 | 0 | 1 | 0 | 0 | 2 | 0 | -1 | 2 | -1 | 2 | 4 | -2 | -1 | 1 | -2 |
-12 | -10 | -6 | -5 | -3 | -2 | -2 | -2 | -6 | -4 | -2 | -5 | -4 | 1 | -5 | -4 | -5 | -9 | |
93 | 79 | 92 | 78 | 93 | 93 | 93 | 81 | 91 | 90 | 70 | 87 | 80 | 70 | 71 | 86 | 77 | 86 | |
450 | 750 | 350 | 900 | 1050 | 1100 | 1000 | 1200 | 950 | 950 | 1150 | 900 | 1200 | 1600 | 800 | 800 | 1100 | 850 | |
 | 4:48 | — | — | 4:50 | — | — | 4:50 | — | — | 4:50 | — | — | 4:50 | — | — | 4:50 | — | — |
 | — | — | 10:07 | — | — | 10:07 | — | — | 10:07 | — | — | 10:08 | — | — | 10:08 | — | — | 10:09 |
Next 0-3 days weather summary:
A dusting of snow on Thu morning. Freezing level rising with drizzle on Fri afternoon. Freeze-thaw conditions (max 2°C on Fri afternoon, min -4°C on Thu morning). Winds decreasing (strong winds from the SW on Thu morning, light winds from the W by Fri night).
Next 4-6 days weather summary:
A dusting of snow on Sun morning. Freezing level rising with drizzle on Sun afternoon. Freeze-thaw conditions (max 5°C on Mon afternoon, min -2°C on Mon night). Winds increasing (calm on Sun night, strong winds from the NW by Tue afternoon).
Popular Cerro Castor Pages
Snow Radar
Latest snow reports near Cerro Castor:
Cerro Castor Snow Conditions
| Top snow depth: | 0 cm |
|---|---|
| Bottom snow depth: | 0 cm |
| Fresh snowfall depth: | 4 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Argentina are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
0.4 | Bluebird days Average snow, mostly sunny, light wind. |
Cerro Castor Forecast Snowfall
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Photos of Cerro Castor
La Brecha, a las 10:00 am by Marcos TDF
lonquimay volcano, Chile by dunclogie
Cerro Castor by Jorge E Lopez
Upload new photo Other resorts in Argentina are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Cerro Castor at the specific elevation of 966 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Cerro Castor. 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 Argentina.
Click here to read further information on freezing levels and how we forecast our temperatures.
Visitor Reviews of Cerro Castor
Overall 3.9 Based on 37 votes and 22 reviews
- Snowsure
- Variety of pistes
- Vote
- franco from Argentina writes:
Cerro Castor se presenta nieve segura incluso en las temporadas más pobres. Poca cantidad de gente. Prolongada temporada con nieve primavera hasta fines de septiembre donde se disfruta buena temperatura y sol.
Visitor Reviews of Cerro Castor
franco from Argentina writes:
Cerro Castor se presenta nieve segura incluso en las temporadas más pobres. Poca cantidad de gente. Prolongada temporada con nieve primavera hasta fines de septiembre donde se disfruta buena temperatura y sol.
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