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Marunuma Kogen resort snow
Ski Japan - Gunma

Marunuma Kogen Snow Forecast

36.81° N 139.34° E

Weather Forecast for Marunuma Kogen at 1695m altitude

Issued:
8 am 06 Sep 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Heavy rain (total 148.0mm), heaviest during Mon morning. Very mild (max 18°C on Tue morning, min 12°C on Sun morning). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 78.0mm), heaviest during Thu night. Very mild (max 17°C on Wed morning, min 12°C on Wed night). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light rain
light rain
heavy rain
heavy rain
heavy rain
rain showers
part cloud
mod rain
light rain
light rain
heavy rain
heavy rain
light rain
light rain
heavy rain
mod rain
light rain
part cloud
light rain
light rain
heavy rain
heavy rain
heavy rain
rain shwrs
some clouds
mod. rain
light rain
light rain
heavy rain
heavy rain
light rain
light rain
heavy rain
mod. rain
light rain
some clouds
km/h
10
SE
15
SE
20
ESE
20
ESE
15
WSW
10
NW
5
S
10
SW
10
SSW
10
SW
5
W
10
S
10
SW
10
SSW
10
SSW
5
WSW
5
NW
5
SSW
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
2
4
62
53
15
1
6
5
4
12
19
2
3
26
9
3
max °C
12
12
15
16
17
16
18
16
16
17
14
12
13
13
13
14
14
14
min °C
12
12
12
15
17
16
17
16
16
16
13
12
12
13
13
14
14
14
 chill °C
11
10
10
14
17
16
17
16
16
16
13
12
11
12
13
14
14
14
Humid %
89
93
96
99
97
79
79
96
99
97
99
99
97
99
99
96
94
96
Freeze m
4850
4650
4950
5300
5350
5250
5050
5200
5200
5250
5250
5200
5100
5000
5000
4850
4900
5000
Sea lvl1000m2000m3000m4000m5000m
111113151615161515151312131212131313131314161716201717181413141413141514
Sunrise
5:16
5:16
5:18
5:18
5:20
5:20
Sunset
6:04
6:02
6:00
6:00
5:58
5:57

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Marunuma Kogen:

No recent snow reports

No recent snow reports

Marunuma Kogen Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall: 9 May 2026
Snow AlertsCreate Alert
Other resorts in Japan - Gunma are reporting: powder (0) / good piste (0)

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Snow History

Week 1 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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