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Japan Weekly Snow Roundup #292
Weekly Snow News for Japan, updated 10 December 2025: early-season bases deepen rapidly as Siberian air drives repeated snow across Hokkaido and Honshu
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Castleside at 634 m altitude
Issued by Snow-Forecast.com at: 5 am (local time) / 11 Dec 2025
Now
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | | |  | | | | | | | | | | |
some clouds | clear | cloudy | light rain | cloudy | some clouds | cloudy | light rain | light rain | light rain | light rain | light rain | light rain | light rain | light rain | cloudy | cloudy | some clouds | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 1 | — | — | — | 1 | 2 | 3 | 2 | 2 | 3 | 3 | 3 | — | — | — | |
max °C | 8 | 6 | 6 | 4 | 4 | 4 | 6 | 7 | 8 | 9 | 10 | 9 | 7 | 6 | 6 | 4 | 3 | 2 |
min °C | 7 | 6 | 4 | 4 | 4 | 3 | 4 | 6 | 8 | 9 | 9 | 7 | 6 | 6 | 3 | 3 | 3 | 1 |
2 | 1 | 0 | 1 | 0 | -3 | -2 | 0 | 2 | 4 | 4 | 2 | 2 | 2 | -2 | 0 | 0 | -3 | |
46 | 50 | 78 | 95 | 64 | 70 | 80 | 87 | 93 | 90 | 87 | 82 | 94 | 92 | 93 | 60 | 73 | 60 | |
2850 | 2550 | 1850 | 1450 | 1450 | 1400 | 1250 | 2400 | 2800 | 2700 | 3100 | 2700 | 1950 | 1650 | 1750 | 1500 | 1350 | 1300 | |
 | 8:19 | — | — | 8:21 | — | — | 8:22 | — | — | 8:22 | — | — | 8:23 | — | — | 8:25 | — | — |
 | — | 3:40 | — | — | 3:40 | — | — | 3:38 | — | — | 3:38 | — | — | 3:38 | — | — | 3:40 | — |
Next 0-3 days weather summary:
Light rain (total 4.0mm), mostly falling on Fri morning. Mild temperatures (max 8°C on Thu morning, min 3°C on Fri night). Winds increasing (light winds from the W on Fri morning, gales from the WSW by Sat afternoon).
Next 4-6 days weather summary:
Moderate rain (total 16.0mm), heaviest on Sun morning. Very mild (max 10°C on Sun afternoon, min 1°C on Tue night). Winds decreasing (gales from the SW on Sun afternoon, light winds from the WSW by Tue morning).
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Snow Radar
Latest snow reports near Castleside:
Castleside Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 5 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in United Kingdom are reporting: powder (0) / good piste (0)
Snow History
Week 2 of December has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.6 | Bluebird days Average snow, mostly sunny, light wind. |
Castleside Forecast Snowfall
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Other resorts in United Kingdom are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Castleside at the specific elevation of 634 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Castleside. 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 United Kingdom.
Click here to read further information on freezing levels and how we forecast our temperatures.
Visitor Reviews of Castleside
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