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Scotland’s ski season has gotten underway during Christmas week with the four centres that have all-weather snowmaking each offering limited snowsports in one form or another.
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Sun Valley (Nagano) at 1510 m altitude
Issued by Snow-Forecast.com at: 8 pm (local time) / 29 Dec 2025
Now
Tuesday 30 | Wednesday 31 | Thursday 1 | Friday 2 | Saturday 3 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | |  | | | |  | | | |  | |  | |
snow shwrs | snow shwrs | snow shwrs | snow shwrs | snow shwrs | light snow | snow shwrs | snow shwrs | snow shwrs | mod. snow | snow shwrs | snow shwrs | snow shwrs | some clouds | snow shwrs | clear | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | 1 | — | — | — | 3 | 2 | 1 | 1 | 8 | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -2 | -1 | -1 | -4 | -4 | -5 | -9 | -7 | -6 | -9 | -8 | -8 | -10 | -7 | -7 | -7 |
min °C | -3 | -1 | -4 | -6 | -5 | -8 | -10 | -9 | -8 | -10 | -9 | -11 | -11 | -9 | -8 | -9 |
-6 | -4 | -4 | -10 | -10 | -14 | -14 | -14 | -11 | -13 | -12 | -16 | -14 | -14 | -12 | -9 | |
87 | 90 | 78 | 94 | 79 | 87 | 84 | 77 | 68 | 90 | 78 | 73 | 92 | 69 | 81 | 71 | |
900 | 1300 | 1400 | 850 | 800 | 700 | 0 | 250 | 600 | 0 | 150 | 350 | 0 | 250 | 500 | 0 | |
 | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | — | 4:37 | — | — | 4:38 | — | — | 4:39 | — | — | 4:40 | — | — | 4:40 | — |
Next 0-3 days weather summary:
A light covering of new snow, mostly falling on Wed afternoon. Temperatures will be below freezing (max -1°C on Tue morning, min -10°C on Wed night). Wind will be generally light.
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Thu night. Temperatures will be below freezing (max -2°C on Sun morning, min -11°C on Fri afternoon). Wind will be generally light.
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Latest snow reports near Sun Valley (Nagano):
31 km away from Sun Valley (Nagano)
1 hour ago
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
31 km away from Sun Valley (Nagano)
2 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
Sun Valley (Nagano) Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 26 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)
Snow History
Week 4 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. |
1.7 | Bluebird days Average snow, mostly sunny, light wind. |
Sun Valley (Nagano) Forecast Snowfall
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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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