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Ski Japan - Gunma

Katashina Kogen Snow Forecast

36.81° N 139.23° E

Weather Forecast for Katashina Kogen at 950m altitude

Issued:
8 am 18 Sep 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Heavy rain (total 41.0mm), heaviest during Sun night. Warm (max 23°C on Sat morning, min 13°C on Fri night). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 22.0mm), heaviest during Mon morning. Warm (max 23°C on Tue morning, min 12°C on Mon night). Wind will be generally light.

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
part cloud
part cloud
part cloud
part cloud
light rain
mod rain
mod rain
light rain
heavy rain
mod rain
rain showers
rain showers
clear
clear
part cloud
cloud
light rain
mod rain
some clouds
some clouds
some clouds
some clouds
light rain
mod. rain
mod. rain
light rain
heavy rain
mod. rain
rain shwrs
rain shwrs
clear
clear
some clouds
cloudy
light rain
mod. rain
km/h
5
SSE
5
S
5
SE
5
SSE
5
SSW
5
SSE
5
ENE
5
ESE
5
E
15
NNE
15
NNW
15
NNW
10
NNW
5
WNW
5
S
10
S
5
SW
5
WSW
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
2
6
6
4
23
7
2
2
2
9
max °C
21
19
15
23
21
18
17
18
17
18
18
18
23
22
15
17
17
15
min °C
17
16
13
21
18
17
17
17
17
17
17
12
19
15
14
16
15
15
 chill °C
17
16
13
21
18
17
17
17
17
17
16
11
19
15
14
16
15
15
Humid %
82
82
87
77
85
98
89
94
96
94
92
94
56
56
96
95
94
100
Freeze m
4500
4550
4700
4750
4800
4700
4650
5000
5100
5300
5250
5250
5000
4950
4900
4500
4450
4300
Sea lvl1000m2000m3000m4000m5000m
161515191817161617171615181715151514191814222018171817181815211915171615
Sunrise
5:26
5:26
5:28
5:28
5:30
5:31
Sunset
5:46
5:45
5:44
5:42
5:40
5:38

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Katashina Kogen:

No recent snow reports

No recent snow reports

Katashina Kogen Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall: 4 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 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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