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snowy resort
Ski Japan - Gunma

Manza Onsen Snow Forecast

36.64° N 138.51° E
1820m altitude
Issued:
2 am 18 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 38.0mm), heaviest during Wed afternoon. Very mild (max 19°C on Tue morning, min 16°C on Tue morning). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 37.0mm), heaviest during Fri afternoon. Very mild (max 18°C on Sun morning, min 16°C on Fri afternoon). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
part cloud
rain showers
part cloud
rain showers
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
light rain
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
some clouds
rain shwrs
some clouds
rain shwrs
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
light rain
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
km/h
5
S
5
ESE
5
SE
0
SW
5
ESE
5
SSE
0
NNE
0
NNE
5
SSW
5
NNW
5
NNW
5
SW
0
NW
0
N
5
WSW
5
WNW
5
NNW
5
W
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
2
2
8
2
6
9
9
5
7
3
3
5
1
3
6
4
max °C
19
18
16
18
18
17
17
17
16
17
17
16
16
17
16
18
17
16
min °C
16
17
16
17
17
16
17
17
16
17
16
16
16
16
16
17
17
16
 chill °C
16
17
16
17
17
16
17
17
16
17
16
16
16
16
16
17
17
16
Humid %
79
75
91
85
82
84
85
91
91
81
86
82
81
82
89
84
87
84
Freeze m
4950
5000
5050
4950
4900
4950
4800
4900
4900
4850
4850
4800
4750
4850
4800
4850
4950
4900
Sea lvl1000m2000m3000m4000m5000m
171715171716161615161615151615171615201815201816181816181715181715191815
Sunrise
5:05
5:05
5:05
5:07
5:07
5:09
Sunset
6:34
6:31
6:30
6:30
6:29
6:27

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 3 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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