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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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Shiga Kogen-Takamagahara Mammoth at 1862 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 19 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  |  |  | |  | | | | | | |  | |
clear | clear | clear | some clouds | some clouds | some clouds | cloudy | light snow | light snow | light snow | snow shwrs | clear | some clouds | some clouds | some clouds | light snow | light snow | mod. snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 1 | 4 | 1 | — | — | — | — | — | — | 1 | 6 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | 1 | 4 | 3 | 4 | 4 | 5 | 5 | 4 | -2 | -6 | -7 | -2 | -1 | -1 | -1 | 1 | 1 | -1 |
min °C | 0 | 2 | 3 | 3 | 4 | 4 | 5 | 2 | -6 | -7 | -7 | -6 | -1 | -1 | -2 | 1 | 1 | -7 |
-4 | -1 | 0 | -2 | 0 | 0 | 1 | -1 | -14 | -15 | -14 | -10 | -3 | -5 | -6 | -5 | -6 | -15 | |
34 | 43 | 25 | 84 | 73 | 72 | 85 | 98 | 94 | 73 | 71 | 37 | 35 | 44 | 62 | 75 | 88 | 92 | |
1800 | 2350 | 2550 | 2450 | 2600 | 2850 | 2750 | 2650 | 1150 | 550 | 600 | 400 | 1550 | 1650 | 1400 | 2650 | 2350 | 1100 | |
 | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 4:31 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — | — | 4:34 | — |
Next 0-3 days weather summary:
A light covering of new snow, mostly falling on Sun afternoon. Freeze-thaw conditions (max 5°C on Sat night, min -6°C on Sun night). Wind will be generally light.
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Wed night. Freeze-thaw conditions (max 1°C on Wed morning, min -7°C on Mon morning). Winds increasing (light winds from the W on Mon night, fresh winds from the SSW by Wed afternoon).
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Latest snow reports near Shiga Kogen-Takamagahara Mammoth:
24 km away from Shiga Kogen-Takamagahara Mammoth
4 hours ago
Partly cloudy at Madarao Kogen. Just a light breeze today. Feeling cold here today. There is a dusting of fresh snow. Packed snow on piste. The off-piste has an icy crust. from Madarao Kogen
33 km away from Shiga Kogen-Takamagahara Mammoth
22 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
49 km away from Shiga Kogen-Takamagahara Mammoth
22 hours agoRain and snow or hail reported from Takada at 18 metres elevation only 2 kms E of Kanayasan Ski Resort from Kanayasan
33 km away from Shiga Kogen-Takamagahara Mammoth
24 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
Shiga Kogen-Takamagahara Mammoth Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 14 cm |
| Last snowfall: | 18 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:
2.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.4 | Powder days Fresh snow, limited sun, any wind. |
1.1 | Bluebird days Average snow, mostly sunny, light wind. |
Shiga Kogen-Takamagahara Mammoth Forecast Snowfall
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Photos of Shiga Kogen-Takamagahara Mammoth
Shiga Kogen-Takamagahara Mammoth
Upload new photo Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
The above table gives the weather forecast for Shiga Kogen-Takamagahara Mammoth at the specific elevation of 1862 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Shiga Kogen-Takamagahara Mammoth. 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.
Resort name is also written as Takamagahara Mammoth.
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