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Sun Valley (Nagano) Weather (Next 3 days): The snow forecast for Sun Valley (Nagano) is: A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -1°C on Tue morning, min -13°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun night, light winds from the SW by Mon afternoon).
Sun Valley (Nagano) Weather (Days 4-6): A light covering of new snow, mostly falling on Wed afternoon. Temperatures will be below freezing (max 0°C on Thu afternoon, min -11°C on Wed night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -12 |  | ||||
| Bottom Lift: | -11 | |
Latest snow reports near Sun Valley (Nagano):
Snowing in Karuizawa Snow Park. from Karuizawa Snow Park
There is heavy snow falling in Lotte Arai Resort. from Lotte Arai Resort
Great snow conditions throughout area. Cloudy and snowy today. from Ikenotaira Onsen Alpenblick
Snow is falling on the slopes above Maiko Snow Resort. from Maiko Snow Resort
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
Sun 11 | Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  |  |  |  | |  |  | | | | |  | |
heavy snow | heavy snow | snow shwrs | clear | clear | some clouds | light snow | light snow | mod. snow | snow shwrs | some clouds | cloudy | light snow | light snow | snow shwrs | snow shwrs | snow shwrs | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
16 | 26 | — | — | — | — | 2 | 2 | 9 | 2 | — | — | — | 2 | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -9 | -12 | -9 | -7 | -5 | -1 | -2 | -5 | -8 | -8 | -7 | -1 | 0 | -2 | -3 | -4 | -6 |
min °C | -11 | -13 | -11 | -8 | -7 | -3 | -4 | -9 | -9 | -10 | -11 | -3 | -3 | -3 | -3 | -7 | -7 |
-21 | -24 | -17 | -12 | -12 | -9 | -12 | -14 | -16 | -13 | -14 | -7 | -8 | -9 | -8 | -10 | -10 | |
93 | 95 | 76 | 71 | 66 | 79 | 93 | 92 | 93 | 81 | 72 | 56 | 58 | 98 | 90 | 82 | 73 | |
200 | 0 | 0 | 450 | 0 | 1100 | 1250 | 400 | 250 | 400 | 0 | 900 | 1500 | 1200 | 1000 | 950 | 0 | |
 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — |
 | 4:49 | — | — | 4:49 | — | — | 4:50 | — | — | 4:51 | — | — | 4:52 | — | — | 4:52 | — |
A heavy fall of snow, heaviest during Sun night. Temperatures will be below freezing (max -1°C on Tue morning, min -13°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun night, light winds from the SW by Mon afternoon).
A light covering of new snow, mostly falling on Wed afternoon. Temperatures will be below freezing (max 0°C on Thu afternoon, min -11°C on Wed night). Wind will be generally light.
Latest snow reports near Sun Valley (Nagano):
Snowing in Karuizawa Snow Park. from Karuizawa Snow Park
There is heavy snow falling in Lotte Arai Resort. from Lotte Arai Resort
Great snow conditions throughout area. Cloudy and snowy today. from Ikenotaira Onsen Alpenblick
Snow is falling on the slopes above Maiko Snow Resort. from Maiko Snow Resort
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 2 cm |
| Last snowfall: | 10 Jan 2026 |
| Snow Alerts | Create Alert |
2.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.0 | Powder days Fresh snow, limited sun, any wind. |
1.8 | Bluebird days Average snow, mostly sunny, light wind. |
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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