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Japan Weekly Snow Roundup #300
Weekly Snow News for Japan, updated 4th February 2026: Snowpack passes six metres at Seki Onsen as storms continue.
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Sun Valley (Nagano) at 1600 m altitude
Issued by Snow-Forecast.com at: 8 pm (local time) / 05 Feb 2026
Now
Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | | |  |  | | |  |  |  | | |
some clouds | snow shwrs | light snow | light snow | light snow | light snow | light snow | light snow | mod. snow | heavy snow | light snow | light snow | snow shwrs | some clouds | cloudy | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | 1 | 2 | 1 | 1 | 2 | 2 | 5 | 14 | 1 | 1 | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -2 | -5 | -9 | -10 | -10 | -12 | -12 | -13 | -14 | -9 | -8 | -4 | -1 | 0 | -3 |
min °C | -3 | -3 | -8 | -11 | -11 | -12 | -13 | -13 | -14 | -14 | -12 | -9 | -9 | -2 | -2 | -6 |
-8 | -8 | -14 | -17 | -16 | -16 | -16 | -20 | -23 | -25 | -22 | -16 | -14 | -6 | -5 | -10 | |
61 | 70 | 85 | 83 | 87 | 86 | 93 | 79 | 88 | 96 | 88 | 83 | 60 | 34 | 49 | 61 | |
1150 | 1250 | 750 | 0 | 0 | 150 | 0 | 0 | 0 | 0 | 0 | 400 | 0 | 1150 | 1500 | 700 | |
 | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — |
 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — |
Next 0-3 days weather summary:
A moderate fall of snow, heaviest on Sun afternoon. Temperatures will be below freezing (max -2°C on Thu night, min -14°C on Sun afternoon). Wind will be generally light.
Next 4-6 days weather summary:
A moderate fall of snow, heaviest on Sun night. Temperatures will be below freezing (max 0°C on Tue afternoon, min -14°C on Sun night). Winds decreasing (fresh winds from the NW on Sun night, calm by Mon night).
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Latest snow reports near Sun Valley (Nagano):
34 km away from Sun Valley (Nagano)
9 hours ago
No clouds over Akakura Kanko today. Calm. Freeze-thaw conditions. No new snow. Every lift is open. The pistes have good snow. Variable snow conditions off-piste from Akakura Kanko
Sun Valley (Nagano) Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 3 Feb 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
Snow History
Week 1 of February has on average:
2.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
2.2 | 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 1600 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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