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snowy resort
Ski Japan - Gunma

Manza Onsen Snow Forecast

36.64° N 138.51° E

Weather Forecast for Manza Onsen at 1820m altitude

Issued:
8 pm 13 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 35.0mm), heaviest during Wed afternoon. Very mild (max 19°C on Mon morning, min 12°C on Tue night). Wind will be generally light.

Days 5-7 weather summary:

Heavy rain (total 27.0mm), heaviest during Wed night. Very mild (max 16°C on Sat morning, min 12°C on Wed night). Wind will be generally light.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
rain showers
clear
thunderstorm
mod rain
light rain
thunderstorm
light rain
light rain
mod rain
mod rain
light rain
light rain
light rain
light rain
light rain
rain showers
rain shwrs
clear
t-storm
risk
mod. rain
light rain
t-storm
risk
light rain
light rain
mod. rain
mod. rain
light rain
light rain
light rain
light rain
light rain
rain shwrs
km/h
10
SSW
20
SW
10
W
10
SSW
10
SSW
5
SW
10
SW
5
SW
0
NNW
10
SSE
5
SSE
5
SE
10
SE
10
SE
10
SE
10
SE
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
3
7
3
5
4
3
9
8
2
2
3
3
3
1
max °C
16
19
17
15
14
14
13
13
13
13
13
13
13
13
13
14
min °C
16
17
16
13
14
13
12
13
13
12
13
12
13
13
13
13
 chill °C
16
16
16
12
14
12
12
13
13
11
13
12
12
12
12
12
Humid %
88
66
75
91
94
94
94
95
99
98
96
95
91
95
97
90
Freeze m
4900
4900
4550
4550
4500
4350
4350
4350
4350
4300
4250
4450
4650
4550
4650
4900
Sea lvl1000m2000m3000m4000m5000m
1517161413131212121212121212121315201714151413141313131312131312
Sunrise
5:26
5:26
5:28
5:28
5:28
Sunset
5:55
5:53
5:52
5:51
5:50

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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