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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:
2 pm 22 Sep 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Light rain (total 6.0mm), mostly falling on Wed afternoon. Very mild (max 14°C on Tue afternoon, min 12°C on Tue night). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 43.0mm), heaviest during Sun night. Very mild (max 14°C on Fri afternoon, min 8°C on Sat morning). Wind will be generally light.

Tue
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
clear
clear
part cloud
light rain
light rain
light rain
rain showers
cloud
clear
part cloud
light rain
mod rain
mod rain
rain showers
cloud
mod rain
heavy rain
clear
clear
some clouds
light rain
light rain
light rain
rain shwrs
cloudy
clear
some clouds
light rain
mod. rain
mod. rain
rain shwrs
cloudy
mod. rain
heavy rain
km/h
10
NNW
5
S
5
SSE
5
SSE
10
SSW
5
NW
10
NNW
5
WNW
5
NW
0
W
5
S
5
WSW
5
SW
5
SW
5
SW
5
SSW
5
SW
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
2
2
1
5
8
6
1
10
12
max °C
14
13
13
13
12
13
14
12
14
14
11
9
9
10
12
11
11
min °C
13
12
12
12
12
12
12
12
13
12
9
8
9
9
11
11
11
 chill °C
13
12
12
12
12
12
12
12
13
12
9
8
8
8
11
11
11
Humid %
55
73
88
88
95
92
69
46
32
57
87
98
98
96
90
99
89
Freeze m
4950
4800
4550
4450
4300
4350
4450
4000
4000
3900
3950
3550
3750
3850
4050
4100
4100
Sea lvl1000m2000m3000m4000m5000m
131212121112131112129899111010131114131214131115141191010121111
Sunrise
5:33
5:33
5:35
5:35
5:37
Sunset
5:44
5:42
5:40
5:38
5:37
5:36

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 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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