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Ski Japan - Niigata

Itoigawa Seaside Valley Snow Forecast

36.94° N 137.90° E

Weather Forecast for Itoigawa Seaside Valley at 490m altitude

Issued:
8 am 15 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 47.0mm), heaviest during Wed afternoon. Warm (max 21°C on Thu morning, min 17°C on Wed night). Wind will be generally light.

Days 4-6 weather summary:

Light rain (total 6.0mm), mostly falling on Sun night. Warm (max 23°C on Sat morning, min 18°C on Fri night). Wind will be generally light.

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
mod rain
mod rain
mod rain
light rain
mod rain
heavy rain
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
light rain
cloud
rain showers
light rain
mod. rain
mod. rain
mod. rain
light rain
mod. rain
heavy rain
some clouds
some clouds
some clouds
some clouds
clear
some clouds
some clouds
cloudy
light rain
cloudy
rain shwrs
light rain
km/h
0
ENE
5
NE
5
NE
10
E
10
ENE
10
ENE
5
ENE
10
NE
5
SSE
0
E
5
ENE
5
S
0
NW
5
ENE
0
SE
0
ESE
5
ENE
0
S
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
6
9
9
2
10
11
1
1
4
max °C
20
20
20
19
19
17
21
21
18
22
22
18
23
22
20
22
21
20
min °C
20
20
19
19
18
17
19
19
17
20
19
18
21
21
19
21
21
20
 chill °C
20
20
19
19
18
17
19
19
17
20
19
18
21
21
19
21
21
20
Humid %
97
98
98
95
91
96
76
78
85
69
70
74
62
71
88
87
92
89
Freeze m
4400
4350
4300
4200
4250
3950
4000
4150
4400
4450
4550
4600
4550
4400
4500
4750
4850
4850
Sea lvl1000m2000m3000m4000m5000m
191918181816181917201917212119202019212120201918222218242217242321232220
Sunrise
5:28
5:30
5:31
5:31
5:33
5:33
Sunset
5:57
5:54
5:53
5:52
5:51
5:49

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network

Popular Itoigawa Seaside Valley Pages

Snow Radar

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 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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