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Ski Japan - Gunma

Manza Onsen Snow Forecast

36.64° N 138.51° E
1820m altitude
Issued:
8 pm 16 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 4 days weather summary:

Moderate rain (total 14.0mm), heaviest on Wed afternoon. Very mild (max 19°C on Tue morning, min 14°C on Sun night). Wind will be generally light.

Days 5-7 weather summary:

Heavy rain (total 48.0mm), heaviest during Thu afternoon. Very mild (max 18°C on Thu morning, min 15°C on Sat morning). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light rain
cloud
light rain
part cloud
part cloud
thunderstorm
clear
rain showers
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
mod rain
heavy rain
light rain
cloudy
light rain
some clouds
some clouds
t-storm
risk
clear
rain shwrs
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
t-storm
risk
mod. rain
heavy rain
km/h
10
SE
5
SSE
0
SE
5
SE
5
S
5
ESE
5
SE
0
NNW
5
E
5
SSE
5
N
0
E
5
S
0
WSW
5
S
5
SSE
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
2
2
2
7
1
6
13
1
3
8
11
max °C
15
17
18
15
19
17
16
18
18
17
18
18
17
18
18
16
min °C
14
16
16
15
17
17
16
18
17
16
18
17
16
17
17
16
 chill °C
14
16
16
15
17
17
16
18
17
16
18
17
16
17
17
16
Humid %
81
71
72
86
77
85
86
79
83
85
82
86
93
83
88
95
Freeze m
5150
5100
4950
5100
5050
5100
5050
5100
5050
5050
4900
4950
4950
5050
5050
5050
Sea lvl1000m2000m3000m4000m5000m
1416161517161617171617171617171615181815201816201816191816191816
Sunrise
5:03
5:05
5:05
5:05
5:07
Sunset
6:35
6:34
6:31
6:30
6:30

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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