Kosai-shi Sea Conditions and Tide Table

Kosai-shi 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 05:56 AM and sunset is at 05:59 PM.

Days 1–3 Weather Summary

Moderate rain (total 15mm), heaviest on Wed night. Cool air temperatures (max 17°C on Thu afternoon, min 3°C on Fri night). Mainly fresh winds.

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 17°C on Mon afternoon, min 7°C on Sat morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Very mild (max 16°C on Thu morning, min 10°C on Tue morning). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 30mm), heaviest during Fri afternoon. Very mild (max 16°C on Sat morning, min 8°C on Sat night). Winds increasing (calm on Fri afternoon, fresh winds from the WNW by Sat afternoon).

Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
1
Thu
2
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
High Tide
5:16PM1.71m
5:49AM1.73m
5:56PM1.77m
6:12AM1.75m
6:37PM1.79m
6:36AM1.75m
7:20PM1.75m
7:00AM1.73m
8:06PM1.66m
7:25AM1.69m
9:00PM1.53m
7:52AM1.63m
10:12PM1.38m
8:21AM1.54m
00:16AM1.30m
8:58AM1.42m
2:44AM1.36m
10:52AM1.29m
3:33AM1.44m
1:41PM1.31m
4:02AM1.51m
3:04PM1.42m
4:27AM1.57m
4:00PM1.54m
4:49AM1.62m
4:44PM1.63m
5:10AM1.65m
Low Tide
11:22AM0.55m
11:34PM0.25m
11:51AM0.40m
00:07AM0.32m
12:23PM0.27m
00:39AM0.44m
12:57PM0.18m
1:12AM0.59m
1:33PM0.14m
1:44AM0.76m
2:14PM0.17m
2:16AM0.94m
3:03PM0.25m
2:51AM1.10m
4:06PM0.37m
3:44AM1.23m
5:42PM0.46m
7:38AM1.26m
7:37PM0.47m
9:14AM1.10m
8:55PM0.41m
9:50AM0.93m
9:46PM0.37m
10:20AM0.75m
10:26PM0.36m
10:49AM0.58m
11:00PM0.39m
Wave
height (m) 
direction
period (s) 
0.7
E
13
0.7
E
13
0.7
E
13
2.2
SSW
8
2.1
SSW
8
1.6
WNW
5
1.2
NW
4
1
WNW
4
1.7
WNW
5
1.3
NW
5
0.6
E
14
0.5
E
13
0.4
E
13
0.4
E
12
0.5
SSW
4
0.5
SW
4
0.6
SE
6
1.2
WNW
4
0.9
NW
4
0.8
E
5
1.3
ESE
6
1.3
ESE
6
1.3
ESE
6
1.1
SE
7
1
SE
8
0.9
SE
8
0.9
SE
8
1.3
SSE
6
1.7
SSE
6
2.1
S
8
1.6
S
7
1.7
WNW
5
1.5
WNW
5
1
NW
4
1
WNW
4
1.3
WNW
4
0.8
WNW
4
0.7
WNW
4
1
WNW
4
1.2
WNW
4
1.2
WNW
4
0.5
WNW
4
0.3
ESE
10
0.4
ESE
9
0.7
S
4
1.5
S
6
2.4
S
8
part cloud
light rain
heavy rain
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
mod rain
heavy rain
light rain
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
part cloud
cloud
part cloud
rain showers
heavy rain
rain showers
some clouds
light rain
heavy rain
some clouds
clear
clear
some clouds
some clouds
clear
some clouds
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
mod rain
heavy rain
light rain
some clouds
clear
clear
clear
clear
some clouds
clear
some clouds
clear
clear
clear
some clouds
cloudy
some clouds
rain shwrs
heavy rain
rain shwrs
 km/h
10
E
10
SSE
10
ENE
25
WNW
35
WNW
20
NW
15
NW
25
WNW
35
NW
15
NW
10
W
5
NNW
10
W
15
SW
5
NW
15
W
20
W
25
NW
10
NNW
10
S
10
ENE
10
E
20
SE
10
E
15
E
15
SSE
10
ENE
15
SE
15
ESE
15
WNW
30
NW
35
WNW
25
NW
20
NW
25
WNW
25
NW
20
WNW
25
W
20
NW
30
NW
25
WNW
5
N
5
E
15
SSE
5
E
20
SE
30
NW
 mm 
2
13
7
20
3
1
20
7
max°C
14
14
12
16
17
10
14
15
10
12
15
12
14
15
13
16
17
13
13
13
12
15
14
14
16
16
15
14
14
14
16
15
10
14
16
12
14
16
12
14
16
13
15
15
14
15
17
Moonrise
5:20
5:47
6:15
6:45
7:19
8:00
8:48
9:46
10:51
12:01
1:11
2:19
3:24
4:26
5:27
6:27
Moonset
5:11
6:18
7:26
8:38
9:51
11:05
12:15
1:19
2:12
2:56
3:33
4:04
4:31
4:56
5:21
Sunrise
5:56
5:56
5:54
5:52
5:52
5:50
5:48
5:48
5:46
5:45
5:43
5:41
5:41
5:39
5:37
5:37
Sunset
5:59
5:59
6:00
6:00
6:01
6:02
6:02
6:04
6:05
6:06
6:07
6:07
6:07
6:08
6:09
6:09
Today's sea temperature in Kosai-shi is
14.5° C
(Statistics for 18 Mar 1981-2005 – mean: 17.3 max: 18.7 min: 15.3°C)
Issued (local time): 8 am Wednesday 18 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
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