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Japan Weekly Snow Roundup #298
Weekly Snow News for Japan, updated 21 January 2026: Japan leads global snowfall again, with 1m (40") in 72 hours on Hokkaido and heavy, cold powder spreading into Honshu.
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Sun Valley (Nagano) at 1510 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 23 Jan 2026
Now
Fri 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  |  |  | |  | |  |  |  |  | | | |  | |
light snow | light snow | light snow | heavy snow | heavy snow | mod. snow | light snow | mod. snow | light snow | cloudy | some clouds | clear | snow shwrs | mod. snow | light snow | light snow | snow shwrs | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | 1 | 2 | 12 | 28 | 8 | 4 | 8 | 1 | — | — | — | — | 8 | 3 | 2 | 1 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -8 | -9 | -8 | -8 | -10 | -12 | -12 | -12 | -10 | -9 | -9 | -4 | -3 | -6 | -9 | -9 | -12 |
min °C | -9 | -10 | -8 | -10 | -12 | -12 | -13 | -13 | -12 | -11 | -11 | -5 | -6 | -9 | -9 | -12 | -13 |
-9 | -16 | -14 | -16 | -21 | -21 | -22 | -22 | -18 | -11 | -11 | -9 | -8 | -14 | -14 | -17 | -18 | |
67 | 89 | 78 | 91 | 96 | 94 | 90 | 94 | 89 | 78 | 64 | 52 | 69 | 93 | 89 | 87 | 89 | |
400 | 0 | 350 | 400 | 0 | 0 | 0 | 0 | 0 | 200 | 0 | 600 | 1050 | 0 | 200 | 0 | 0 | |
 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — |
 | 5:00 | — | — | 5:01 | — | — | 5:02 | — | — | 5:04 | — | — | 5:05 | — | — | 5:06 | — |
Next 0-3 days weather summary:
A heavy fall of snow, heaviest during Sat night. Temperatures will be well below freezing (max -8°C on Fri afternoon, min -13°C on Sun afternoon). Wind will be generally light.
Next 4-6 days weather summary:
A moderate fall of snow, heaviest on Tue night. Temperatures will be below freezing (max -3°C on Tue afternoon, min -13°C on Wed night). Wind will be generally light.
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Latest snow reports near Sun Valley (Nagano):
33 km away from Sun Valley (Nagano)
11 hours ago
Excellent on and off piste conditions. Another glorious day. from Ikenotaira Onsen Alpenblick
40 km away from Sun Valley (Nagano)
15 hours ago
There is heavy snow falling at Ishiuchi Maruyama. from Ishiuchi Maruyama
Sun Valley (Nagano) Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 25 cm |
| Last snowfall: | 22 Jan 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
Snow History
Week 4 of January has on average:
1.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.5 | Powder days Fresh snow, limited sun, any wind. |
0.9 | Bluebird days Average snow, mostly sunny, light wind. |
Sun Valley (Nagano) Forecast Snowfall
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Photos of Sun Valley (Nagano)
Upload new photo Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
The above table gives the weather forecast for Sun Valley (Nagano) at the specific elevation of 1510 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Sun Valley (Nagano). 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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