Niigata Sea Conditions and Tide Table

Niigata Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 06:56 AM and sunset is at 04:29 PM.

Days 1–3 Weather Summary

Heavy rain (total 45mm), mainly falling on Thu night. Becoming colder with a light covering of snow, mostly falling on Sat night. Icy conditions (max 10°C on Thu morning, min -1°C on Fri night). Winds decreasing (gales from the NNW on Thu night, calm by Sat night).

Days 4–6 Weather Summary

Moderate rain (total 15mm), heaviest on Mon night. Cool air temperatures (max 10°C on Mon night, min 3°C on Tue night). Winds decreasing (strong winds from the W on Mon night, light winds from the WNW by Tue night).

Days 7–9 Weather Summary

Moderate rain (total 16mm), heaviest on Fri night. Mild temperatures (max 8°C on Thu morning, min 3°C on Wed morning). Winds increasing (calm on Thu afternoon, fresh winds from the NNE by Thu night).

Days 10–12 Weather Summary

Heavy rain (total 25mm), heaviest during Sat night. Later becoming colder with a dusting of snow on Mon night. Freeze-thaw conditions (max 7°C on Sat morning, min 0°C on Mon night). Winds decreasing (near gales from the WSW on Sat night, light winds from the SW by Sun night).

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
Wave Height Map
High Tide
8:07PM0.22m
8:21PM0.19m
6:10AM0.23m
8:26PM0.18m
7:28AM0.18m
8:33PM0.19m
9:36AM0.16m
8:54PM0.21m
12:21PM0.17m
9:28PM0.25m
10:15PM0.30m
11:13PM0.35m
00:19AM0.39m
4:54PM0.30m
1:23AM0.41m
5:16PM0.29m
2:23AM0.41m
5:45PM0.28m
3:19AM0.39m
Low Tide
12:30PM0.04m
11:49PM0.20m
1:04PM0.04m
00:45AM0.15m
1:33PM0.05m
1:50AM0.11m
1:58PM0.07m
3:24AM0.07m
2:16PM0.11m
5:06AM0.04m
2:30PM0.16m
6:10AM0.01m
7:06AM-0.00m
8:02AM0.00m
8:58AM0.00m
6:45PM0.29m
9:53AM0.01m
8:15PM0.28m
10:43AM0.01m
9:40PM0.25m
Wave
height (m) 
direction
period (s) 
1.7
N
6
1.8
N
6
1.1
NNW
7
4.5
NNW
10
4
NW
10
4
NW
11
2.2
NW
10
1.8
NW
9
1.6
NW
9
1.2
NW
8
1.2
NW
8
0.9
NW
8
0.6
NW
7
0.6
WNW
8
2
WSW
6
2.5
WNW
10
2.1
WNW
9
1.8
NW
10
1.3
NW
9
1.2
NW
8
0.9
NNW
7
0.9
NW
7
0.8
NW
6
1.6
NNW
6
1.7
NNW
6
1.3
NNW
7
1
NNW
7
1.1
NNW
6
2.2
WSW
6
3
WNW
6
2.4
NNW
8
2.1
NW
7
1.5
NNW
7
0.9
NW
7
2
W
7
3
NW
9
mod rain
heavy rain
heavy rain
light snow
cloud
light snow
rain showers
light rain
snow showers
cloud
part cloud
clear
cloud
clear
heavy rain
rain showers
cloud
cloud
part cloud
light rain
light rain
cloud
rain showers
light rain
cloud
cloud
mod rain
light rain
light rain
rain showers
cloud
rain showers
part cloud
light rain
mod rain
light snow
mod rain
heavy rain
heavy rain
light snow
cloudy
light snow
rain shwrs
light rain
snow shwrs
cloudy
some clouds
clear
cloudy
clear
heavy rain
rain shwrs
cloudy
cloudy
some clouds
light rain
light rain
cloudy
rain shwrs
light rain
cloudy
cloudy
mod rain
light rain
light rain
rain shwrs
cloudy
rain shwrs
some clouds
light rain
mod rain
light snow
 km/h
35
NNE
35
NNE
25
SSW
50
NNW
55
WNW
45
WNW
25
W
20
WSW
15
NW
15
SSW
15
S
15
SSE
15
SSE
15
S
30
SW
35
WNW
30
NW
10
S
20
S
25
SW
10
S
20
S
0
W
30
NNE
25
NE
20
NNE
20
S
15
SSE
50
WSW
55
NW
40
W
40
WNW
20
WNW
25
S
30
WSW
45
WNW
 mm 
7
12
16
1
1
2
6
14
1
1
3
2
3
7
2
4
6
2
1
9
1
max°C
10
7
7
3
0
1
2
4
4
5
6
6
6
7
10
6
5
5
5
7
6
8
8
5
4
4
5
7
6
5
4
4
4
4
4
2
Moonrise
10:18
10:43
11:07
11:31
11:58
12:30
1:08
1:57
2:57
4:08
5:24
6:40
Moonset
9:27
10:32
11:38
12:47
1:59
3:15
4:33
5:48
6:54
7:49
8:32
Sunrise
6:56
6:56
6:58
6:58
6:58
6:58
6:58
6:58
6:58
6:58
6:58
6:58
Sunset
4:29
4:30
4:30
4:30
4:31
4:31
4:32
4:34
4:35
4:36
4:36
4:37
Today's sea temperature in Niigata is
14.5° C
(Statistics for 25 Dec 1981-2005 – mean: 13.4 max: 15.1 min: 11.2°C)
Issued (local time): 8 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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