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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 pm 12 Sep 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 4 days weather summary:

Heavy rain (total 23.0mm), heaviest during Mon afternoon. Very mild (max 19°C on Mon morning, min 13°C on Mon night). Wind will be generally light.

Days 5-7 weather summary:

Heavy rain (total 43.0mm), heaviest during Thu afternoon. Very mild (max 13°C on Tue night, min 11°C on Thu night). Wind will be generally light.

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
part cloud
rain showers
thunderstorm
part cloud
part cloud
thunderstorm
mod rain
light rain
light rain
light rain
mod rain
thunderstorm
light rain
mod rain
mod rain
part cloud
some clouds
rain shwrs
t-storm
risk
some clouds
some clouds
t-storm
risk
mod. rain
light rain
light rain
light rain
mod. rain
t-storm
risk
light rain
mod. rain
mod. rain
some clouds
km/h
10
SSW
10
SSW
10
SW
10
SSW
15
SW
5
SSW
10
SSW
10
SW
10
W
10
SSW
10
SSW
5
SW
5
S
5
SE
0
SE
10
SE
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
3
5
7
4
3
5
10
3
4
9
9
max °C
15
16
16
16
19
18
15
14
14
13
13
13
13
12
12
12
min °C
14
15
16
15
17
16
13
13
13
13
13
13
12
12
12
11
 chill °C
14
15
16
15
16
16
13
12
13
13
12
13
12
12
12
10
Humid %
93
92
92
87
66
79
86
96
91
95
96
94
98
97
97
90
Freeze m
4900
4800
4850
4900
4850
4650
4500
4450
4450
4450
4300
4350
4350
4300
4150
4500
Sea lvl1000m2000m3000m4000m5000m
1415151517161313131312121212111114171715201714141413141413131211
Sunrise
5:24
5:26
5:26
5:28
5:28
Sunset
5:57
5:55
5:53
5:52
5:51

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 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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