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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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Tangram Ski Circus at 1320 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 18 Dec 2025
Now
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | | | |  |  |  | | | | |  | | |
snow shwrs | clear | clear | clear | some clouds | clear | clear | some clouds | cloudy | mod. rain | mod. snow | snow shwrs | snow shwrs | clear | clear | some clouds | some clouds | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | 5 | 3 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — | — | — | |
max °C | -4 | 0 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 7 | 0 | -5 | -6 | -1 | 4 | 4 | 4 |
min °C | -5 | -2 | 3 | 5 | 5 | 6 | 8 | 8 | 8 | 4 | -4 | -6 | -6 | -4 | 2 | 4 | 3 |
-9 | -2 | 0 | 2 | 2 | 3 | 5 | 5 | 5 | 0 | -11 | -12 | -12 | -4 | -2 | 0 | -1 | |
90 | 42 | 36 | 33 | 41 | 77 | 66 | 68 | 75 | 97 | 98 | 95 | 95 | 44 | 35 | 32 | 46 | |
700 | 0 | 2050 | 2550 | 2550 | 2550 | 2700 | 2900 | 2900 | 2600 | 1150 | 600 | 600 | 0 | 1800 | 2150 | 2300 | |
 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — |
 | 4:31 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — | — | 4:34 | — |
Next 0-3 days weather summary:
Mostly dry. Freeze-thaw conditions (max 9°C on Sun morning, min -5°C on Thu afternoon). Winds increasing (calm on Thu night, fresh winds from the SSW by Sun morning).
Next 4-6 days weather summary:
Mild with light rain (total 8.0mm) on Sun afternoon Becoming colder with a light covering of snow, mostly falling on Sun night. Freeze-thaw conditions (max 7°C on Sun afternoon, min -6°C on Mon morning). Winds increasing (calm on Mon night, strong winds from the SSW by Wed morning).
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Latest snow reports near Tangram Ski Circus:
19 km away from Tangram Ski Circus
6 hours ago
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
28 km away from Tangram Ski Circus
6 hours agoRain and snow or hail reported from Takada at 18 metres elevation only 2 kms E of Kanayasan Ski Resort from Kanayasan
19 km away from Tangram Ski Circus
8 hours agoModerate to heavy freezing rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
34 km away from Tangram Ski Circus
8 hours ago
There is heavy snow falling at Hakuba Cortina Kokusai. from Hakuba Cortina Kokusai
Tangram Ski Circus Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 8 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
Snow History
Week 3 of December has on average:
2.1 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.9 | Powder days Fresh snow, limited sun, any wind. |
0.7 | Bluebird days Average snow, mostly sunny, light wind. |
Tangram Ski Circus Forecast Snowfall
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Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
The above table gives the weather forecast for Tangram Ski Circus at the specific elevation of 1320 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Tangram Ski Circus. 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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