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Ski Japan - Gunma

Manza Onsen Snow Forecast

36.64° N 138.51° E

Weather Forecast for Manza Onsen at 1820m altitude

Issued:
8 am 31 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Heavy rain (total 29.0mm), heaviest during Mon afternoon. Very mild (max 19°C on Wed morning, min 15°C on Mon night). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 38.0mm), heaviest during Fri afternoon. Very mild (max 16°C on Thu morning, min 11°C on Fri night). Wind will be generally light.

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
rain showers
thunderstorm
rain showers
rain showers
thunderstorm
rain showers
rain showers
thunderstorm
mod rain
light rain
light rain
heavy rain
mod rain
heavy rain
rain showers
part cloud
rain showers
part cloud
rain shwrs
t-storm
risk
rain shwrs
rain shwrs
t-storm
risk
rain shwrs
rain shwrs
t-storm
risk
mod. rain
light rain
light rain
heavy rain
mod. rain
heavy rain
rain shwrs
some clouds
rain shwrs
some clouds
km/h
5
S
0
SW
5
S
5
SSW
0
WNW
5
SSW
5
W
5
W
10
S
15
SW
15
WSW
10
W
5
WNW
5
WSW
5
N
5
NNE
5
E
5
ESE
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
2
5
1
1
3
1
1
5
10
2
2
12
9
11
1
1
max °C
17
17
15
18
18
16
19
18
17
16
16
14
13
12
12
15
14
13
min °C
17
16
15
16
16
15
17
17
16
16
15
13
13
12
11
13
13
11
 chill °C
17
16
15
16
16
15
17
17
16
15
14
12
13
12
11
13
13
11
Humid %
88
87
92
86
83
86
77
76
81
80
80
92
95
93
86
62
74
76
Freeze m
5100
5150
5200
5100
5100
5100
4900
4800
4850
4800
4800
4800
4650
4550
4500
4500
4350
4750
Sea lvl1000m2000m3000m4000m5000m
161615161615171716151513121111141312181715191815201916171614131311171411
Sunrise
5:15
5:16
5:16
5:18
5:18
5:18
Sunset
6:15
6:15
6:13
6:12
6:09
6:08

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Manza Onsen:

No recent snow reports

No recent snow reports

Manza Onsen 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 4 of August 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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