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Ski Japan - Gunma

Karuizawa Snow Park Snow Forecast

36.42° N 138.63° E

Weather Forecast for Karuizawa Snow Park at 1270 m altitude

Issued:
2 pm 29 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 Tue afternoon. Warm (max 20°C on Thu morning, min 9°C on Tue night). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 26.0mm), heaviest during Mon morning. Very mild (max 14°C on Fri afternoon, min 5°C on Fri night). Wind will be generally light.

Tue
29
Wednesday
30
Thursday
1
Friday
2
Saturday
3
Sunday
4
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light rain
rain showers
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
mod rain
light rain
rain shwrs
some clouds
cloudy
some clouds
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
mod. rain
km/h
10
WNW
5
WSW
5
SSE
5
ESE
5
SSW
5
WNW
5
NNW
15
NW
10
NW
10
NNW
10
NW
5
WNW
0
NNW
5
SSE
5
SE
10
ESE
20
ESE
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
 mm
5
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8
max °C
12
10
15
15
12
20
19
13
15
14
7
13
14
8
13
12
9
min °C
11
9
13
12
12
17
14
9
12
9
5
10
9
7
11
10
9
 chill °C
11
9
13
11
12
17
14
7
11
7
2
9
9
7
11
8
7
Humid %
80
81
89
91
94
73
64
72
78
60
77
58
45
77
82
85
99
Freeze m
4000
4400
4400
4500
4750
4650
4600
4150
3850
3400
3400
3600
3350
3700
3850
3700
3500
Sea lvl1000m2000m3000m4000m5000m
12111313141717121211710119101091210141412191711141261212812119
Sunrise
—
—
5:39
—
—
5:39
—
—
5:39
—
—
5:41
—
—
5:41
—
—
Sunset
5:32
—
—
5:30
—
—
5:30
—
—
5:28
—
—
5:27
—
—
5:24
—

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Karuizawa Snow Park:

No recent snow reports

No recent snow reports

Karuizawa Snow Park Snow Conditions

Top snow depth:—
Bottom snow depth:—
Fresh snowfall depth:—
Last snowfall: 7 Apr 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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