Hikawa (Yonakuni Sima) Sea Conditions and Tide Table

Hikawa (Yonakuni Sima) 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 07:28 AM and sunset is at 06:06 PM.

Days 1–3 Weather Summary

Heavy rain (total 48mm), heaviest during Thu morning. Warm air temperatures (max 20°C on Thu morning, min 16°C on Thu afternoon). Winds decreasing (gales from the N on Thu morning, calm by Sat night).

Days 4–6 Weather Summary

Moderate rain (total 13mm), heaviest on Mon night. Warm air temperatures (max 22°C on Mon morning, min 20°C on Sun morning). Winds increasing (calm on Sun night, strong winds from the NNE by Tue afternoon).

Days 7–9 Weather Summary

Moderate rain (total 16mm), heaviest on Fri night. Warm (max 21°C on Wed night, min 17°C on Fri night). Winds increasing (light winds from the NE on Thu afternoon, near gales from the NNE by Fri afternoon).

Days 10–12 Weather Summary

Heavy rain (total 30mm), heaviest during Sat afternoon. Very mild (max 17°C on Sat morning, min 11°C on Tue morning). Winds increasing (fresh winds from the NE on Sat night, near gales from the NNE by Sun afternoon).

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
11:14AM1.20m
10:30PM1.33m
11:54AM1.19m
11:27PM1.20m
12:38PM1.19m
00:40AM1.09m
1:27PM1.20m
2:15AM1.00m
2:21PM1.23m
4:00AM0.99m
3:17PM1.27m
5:25AM1.04m
4:12PM1.34m
6:27AM1.10m
5:01PM1.40m
7:15AM1.16m
5:49PM1.47m
7:53AM1.20m
6:33PM1.52m
8:27AM1.23m
7:16PM1.56m
8:59AM1.25m
7:57PM1.56m
Low Tide
4:38PM0.64m
5:19AM0.25m
5:36PM0.62m
6:02AM0.39m
6:46PM0.59m
6:52AM0.52m
8:08PM0.52m
7:51AM0.63m
9:29PM0.42m
9:00AM0.72m
10:37PM0.29m
10:09AM0.77m
11:33PM0.15m
11:09AM0.79m
00:21AM0.04m
12:01PM0.77m
1:04AM-0.05m
12:45PM0.74m
1:43AM-0.10m
1:26PM0.69m
2:20AM-0.12m
2:05PM0.64m
2:56AM-0.09m
Wave
height (m) 
direction
period (s) 
1.7
NNE
6
4
N
10
4
NNE
10
3.5
NNE
10
3
NNE
10
2.3
NNE
9
1.9
NNE
9
1.7
NNE
9
1.5
NNE
8
1.7
NNE
8
1.5
NE
7
1.4
NE
7
1.4
NE
6
2
NE
7
2.2
NE
7
2.2
NE
7
2.5
NE
8
2.5
NE
8
2.5
NE
8
2.2
NE
8
1.8
NE
8
1.4
NE
8
1.3
NE
8
1.1
NE
8
2
NNE
6
3
N
8
3.5
NNE
9
2.5
NNE
9
3
NNE
8
2.4
NNE
8
2.5
NNE
8
3
NNE
8
3
NNE
8
3
NNE
9
3
N
9
3
NNE
8
heavy rain
light rain
light rain
light rain
light rain
light rain
mod rain
rain showers
rain showers
clear
clear
part cloud
rain showers
rain showers
rain showers
light rain
rain showers
light rain
rain showers
part cloud
part cloud
clear
clear
rain showers
rain showers
light rain
mod rain
light rain
mod rain
heavy rain
light rain
light rain
light rain
cloud
cloud
part cloud
heavy rain
light rain
light rain
light rain
light rain
light rain
mod rain
rain shwrs
rain shwrs
clear
clear
some clouds
rain shwrs
rain shwrs
rain shwrs
light rain
rain shwrs
light rain
rain shwrs
some clouds
some clouds
clear
clear
rain shwrs
rain shwrs
light rain
mod rain
light rain
mod rain
heavy rain
light rain
light rain
light rain
cloudy
cloudy
some clouds
 km/h
35
NNE
55
N
50
NNE
40
NE
35
NE
35
ENE
20
ESE
10
SE
5
SE
5
SSE
5
SW
5
WNW
30
NNE
40
NNE
40
NE
40
NNE
45
NNE
45
NNE
35
N
35
NNE
25
NNE
15
NNE
5
NE
15
N
40
N
50
NNE
50
NNE
40
NE
40
NE
35
NE
45
NNE
50
NNE
45
N
45
N
50
N
45
N
 mm 
15
4
5
2
2
2
7
8
3
1
2
2
3
2
3
2
2
2
2
8
3
6
12
3
2
4
max°C
20
17
17
16
17
19
19
19
20
21
21
21
22
21
22
21
21
21
20
20
21
21
21
21
19
18
18
17
17
17
16
16
14
13
13
13
Moonrise
11:07
11:40
12:12
12:45
1:21
2:02
2:50
3:45
4:49
5:58
7:08
8:16
Moonset
10:47
11:43
12:40
1:40
2:43
3:50
5:00
6:11
7:18
8:17
9:07
Sunrise
7:28
7:28
7:28
7:30
7:30
7:30
7:31
7:31
7:31
7:31
7:31
7:31
Sunset
6:06
6:07
6:07
6:07
6:07
6:08
6:08
6:09
6:10
6:12
6:12
6:13
Today's sea temperature in Hikawa (Yonakuni Sima) is
25.5° C
(Statistics for 25 Dec 1981-2005 – mean: 23.6 max: 25.1 min: 22.5°C)
Issued (local time): 2 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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