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Ski Japan - Nagano

Shiga Kogen-Sun Valley Snow Forecast

Weather Forecast for Shiga Kogen Sun Valley at 1390 m
Issued: 2 am  14 Dec 2025 (local time)

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New snow in Shiga Kogen-Sun Valley

1.0cm0.4in
Sun 14th (PM)
The snow forecast for Shiga Kogen-Sun Valley is: Mild at first with light rain (total 3.0mm) on Sun morning followed by colder weather and light fall of snow, heaviest on Sun night. Freeze-thaw conditions (max 2°C on Sun morning, min -9°C on Mon night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Mon night).

Shiga Kogen-Sun Valley Weather (Next 3 days): The snow forecast for Shiga Kogen-Sun Valley is: Mild at first with light rain (total 3.0mm) on Sun morning followed by colder weather and light fall of snow, heaviest on Sun night. Freeze-thaw conditions (max 2°C on Sun morning, min -9°C on Mon night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Mon night).

Shiga Kogen-Sun Valley Weather (Days 4-6): Mostly dry. Freeze-thaw conditions (max 3°C on Fri morning, min -7°C on Wed night). Wind will be generally light.


Shiga Kogen-Sun Valley Live Weather

ResortSnow DepthTemp. (°C)Wind (km/h)Weather
Top Lift: 
2
15
light rain
Bottom Lift: 
2
10
light rain
6 Day Forecast
Issued: 2 am 14 Dec 2025 / Updates in ::
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Last 6 daysScroll left for last 6 daysNow
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
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light rain
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light snow
light snow
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light snow
snow showers
clear
clear
clear
clear
clear
clear
light rain
snow shwrs
heavy snow
light snow
light snow
snow shwrs
some clouds
clear
snow shwrs
snow shwrs
light snow
snow shwrs
clear
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 km/h
10
S
10
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15
W
20
NW
10
NW
5
N
5
W
5
W
5
WSW
5
WSW
5
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5
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5
NNW
0
W
10
S
10
SSW
10
SSW
10
SSW
Snow map
1
12
4
1
1
3
max °C
2
0
-4
-4
-5
-7
-1
-1
-4
-1
-1
-4
-2
-1
-3
3
3
1
min °C
2
-3
-5
-4
-6
-9
-3
-4
-6
-3
-4
-7
-4
-4
-4
2
0
0
-1
-10
-11
-10
-10
-9
-3
-4
-6
-5
-4
-11
-7
-7
-8
-1
-4
-2
95
98
94
97
93
83
47
65
89
94
95
97
83
78
56
37
46
31
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0
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topbotSea lvl1000m2000m3000m4000m5000m
2-2-5-6-6-7-3-2-4-3-3-6-4-203552-2-5-4-6-8-2-3-5-2-3-6-3-3-4321
Sunrise
6:50
6:50
6:50
6:52
6:52
6:52
Sunset
4:30
4:30
4:30
4:30
4:30
4:31
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Snow Radar

Submit a report Eyeball Reporter

Latest snow reports near Shiga Kogen-Sun Valley:

  • 33 km away from Shiga Kogen-Sun Valley

    13 minutes ago
    Is it snowing?

    Snow falling in Myoko Suginohara. from Myoko Suginohara

  • 30 km away from Shiga Kogen-Sun Valley

    4 hours ago
    weather station observation

    Continuous light snow reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is probably falling as rain apart from near the top of the ski area from Iizuna Kogen

Shiga Kogen-Sun Valley Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:32cm
Last snowfall:12 Dec 2025
Snow AlertsCreate Alert
Other resorts in Japan - Nagano are reporting: powder (3) / good piste (3)


Snow History

Week 2 of December has on average:
1.3
Bluebird Powder days
Fresh snow, mostly sunny, light wind.
1.4
Powder days
Fresh snow, limited sun, any wind.
0.1
Bluebird days
Average snow, mostly sunny, light wind.




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