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Ski Japan - Niigata

Itoigawa Seaside Valley Snow Forecast

36.94° N 137.90° E
490m altitude
Issued:
8 am 18 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Heavy rain (total 27.0mm), heaviest during Wed afternoon. Warm (max 27°C on Tue morning, min 23°C on Thu night). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 25.0mm), heaviest during Fri afternoon. Warm (max 26°C on Sun morning, min 22°C on Fri night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
cloud
thunderstorm
part cloud
rain showers
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
rain showers
thunderstorm
rain showers
cloudy
t-storm
risk
some clouds
rain shwrs
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
t-storm
risk
t-storm
risk
rain shwrs
rain shwrs
t-storm
risk
rain shwrs
km/h
5
SSE
5
N
5
S
0
WNW
5
NNW
5
SSW
5
WNW
5
NNE
5
SSW
5
WNW
5
NW
5
SSW
5
WNW
5
NW
5
S
5
WNW
5
NNW
5
S
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
4
2
8
2
5
3
3
2
4
5
4
4
1
1
3
1
max °C
27
27
25
27
27
25
25
26
24
25
24
23
25
25
23
26
26
24
min °C
26
26
24
26
25
24
25
24
23
25
24
22
24
24
23
25
25
23
 chill °C
26
26
24
26
25
24
25
24
23
25
24
22
24
24
23
25
25
23
Humid %
68
69
80
70
74
81
80
78
82
81
88
85
81
84
84
76
82
82
Freeze m
4950
5100
5100
4950
4950
4950
4850
4900
4900
4850
4950
4750
4700
4900
4850
4900
5050
5000
Sea lvl1000m2000m3000m4000m5000m
252523252523242422232222232322242423292824292825282723272523272623282623
Sunrise
5:07
5:07
5:07
5:09
5:09
5:11
Sunset
6:37
6:35
6:34
6:32
6:30
6:30

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network

Popular Itoigawa Seaside Valley Pages

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Latest snow reports near Itoigawa Seaside Valley:

No recent snow reports

No recent snow reports

Itoigawa Seaside Valley Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall: 7 Apr 2026
Snow AlertsCreate Alert
Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)

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Snow History

Week 3 of August 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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