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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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Nanao Korosa at 320 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 | |
 |  |  | | |  | | | |  |  |  |  | | | | |  | |
some clouds | clear | clear | clear | clear | some clouds | clear | clear | some clouds | light rain | mod. rain | mod. rain | cloudy | cloudy | some clouds | some clouds | cloudy | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | 2 | 10 | 6 | — | — | — | — | — | — | |
max °C | 5 | 5 | 4 | 9 | 10 | 9 | 15 | 15 | 12 | 13 | 9 | 5 | 5 | 4 | 5 | 7 | 8 | 8 |
min °C | 3 | 4 | 4 | 6 | 8 | 8 | 11 | 13 | 11 | 12 | 6 | 3 | 3 | 4 | 4 | 6 | 7 | 7 |
0 | 1 | 2 | 5 | 7 | 6 | 9 | 11 | 9 | 10 | 2 | -2 | -2 | -1 | -1 | 2 | 6 | 6 | |
62 | 55 | 63 | 47 | 45 | 56 | 66 | 58 | 59 | 78 | 91 | 72 | 70 | 64 | 63 | 63 | 59 | 66 | |
700 | 950 | 1350 | 2300 | 2650 | 2500 | 2550 | 2600 | 2700 | 2700 | 2250 | 1000 | 750 | 800 | 1000 | 1850 | 2600 | 2500 | |
 | 6:58 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — |
 | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:37 | — | — | 4:38 | — | — | 4:38 | — |
Next 0-3 days weather summary:
Mostly dry. Very mild (max 15°C on Sat morning, min 3°C on Thu morning). Wind will be generally light.
Next 4-6 days weather summary:
Moderate rain (total 18.0mm), heaviest on Sun afternoon. Very mild (max 13°C on Sun morning, min 3°C on Sun night). Wind will be generally light.
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Latest snow reports near Nanao Korosa:
44 km away from Nanao Korosa
12 hours ago
Light rain reported from Nanto-shi wx at 65 metres elevation 8 kms WSW of Tonami Yumenotaira but it is forecast cold enough for snow at higher elevations in the ski area from Tonami Yumenotaira
Nanao Korosa Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 12 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Ishikawa are reporting: powder (0) / good piste (0)
Snow History
Week 3 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. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Nanao Korosa Forecast Snowfall
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Other resorts in Japan - Ishikawa are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Nanao Korosa at the specific elevation of 320 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Nanao Korosa. 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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