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Ski Japan - Nagano

Koumi Riekkusu Ski Valley Snow Forecast

Weather Forecast for Koumi Riekkusu Ski Valley at 1590 m
Issued: 2 pm  12 Sep 2025 (local time)

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The snow forecast for Koumi Riekkusu Ski Valley is: Heavy rain (total 29.0mm), heaviest during Fri afternoon. Warm (max 21°C on Sun morning, min 15°C on Fri afternoon). Wind will be generally light.

Koumi Riekkusu Ski Valley Weather (Next 3 days): The snow forecast for Koumi Riekkusu Ski Valley is: Heavy rain (total 29.0mm), heaviest during Fri afternoon. Warm (max 21°C on Sun morning, min 15°C on Fri afternoon). Wind will be generally light.

Koumi Riekkusu Ski Valley Weather (Days 4-6): Moderate rain (total 11.0mm), heaviest on Mon afternoon. Warm (max 22°C on Tue morning, min 17°C on Mon night). Wind will be generally light.


Koumi Riekkusu Ski Valley Live Weather

ResortSnow DepthTemp. (°C)Wind (km/h)Weather
Top Lift: 
14
5
heavy rain
Bottom Lift: 
15
5
heavy rain
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6 Day Forecast
Issued: 2 pm 12 Sep 2025 / Updates in ::
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Last 6 daysScroll left for last 6 daysNow
Fri
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
thunderstorm
mod rain
light rain
light rain
part cloud
part cloud
thunderstorm
part cloud
light rain
thunderstorm
thunderstorm
clear
thunderstorm
part cloud
part cloud
thunderstorm
clear
part cloud
thunderstorm
light rain
risk thun- der
mod. rain
light rain
light rain
some clouds
some clouds
risk thun- der
some clouds
light rain
risk thun- der
risk thun- der
clear
risk thun- der
some clouds
some clouds
risk thun- der
clear
some clouds
risk thun- der
light rain
 km/h
10
SE
10
SSE
10
SSW
15
SSW
15
SW
15
WSW
10
WSW
5
SW
5
WSW
0
NW
5
W
0
SSE
5
SSE
5
SSW
5
WSW
5
SSW
10
WSW
10
WSW
15
WNW
5
NW
Snow map
 cm 
 mm 
14
8
1
2
2
2
5
2
1
3
2
4
max°C
16
15
19
19
18
21
21
18
20
19
18
22
22
18
22
22
19
22
20
15
min°C
15
15
16
17
17
19
20
17
19
19
17
18
20
17
19
20
18
19
17
14
chill°C 
15
15
16
16
16
19
20
17
19
19
17
18
20
17
19
20
18
19
17
14
Humid% 
92
98
93
77
90
77
70
85
84
93
92
85
60
91
70
66
82
75
73
98
Freezing level (m
4550
4650
4850
5000
5150
5150
5100
5150
5000
5050
5200
5200
4950
5200
5100
4950
5000
4900
4800
4650
topliftbotliftSea lvl1000m2000m3000m4000m5000m
15141718171920171918171919172020181917141615191917222117211918222217232117231915
Sunrise
5:26
5:26
5:28
5:28
5:28
5:30
Sunset
5:59
5:57
5:55
5:53
5:52
5:51
5:50
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Snow Radar

Latest snow reports near Koumi Riekkusu Ski Valley:

No recent snow reports

No recent snow reports

Koumi Riekkusu Ski Valley Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall:15 Apr 2025
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Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)

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Snow History

Week 2 of September has on average:
0.0
Bluebird Powder days
Fresh snow, mostly sunny, light wind.
0.0
Powder days
Fresh snow, limited sun, any wind.
0.0
Bluebird days
Average snow, mostly sunny, light wind.



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