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 06:01 AM and sunset is at 07:27 PM.

Days 1–3 Weather Summary

Heavy rain (total 34mm), heaviest during Sat morning. Warm air temperatures (max 28°C on Fri morning, min 21°C on Sun night). Mainly strong winds.

Days 4–6 Weather Summary

Heavy rain (total 32mm), heaviest during Wed morning. Warm air temperatures (max 27°C on Wed night, min 22°C on Mon morning). Mainly fresh winds.

Days 7–9 Weather Summary

Moderate rain (total 17mm), heaviest on Thu afternoon. Warm (max 27°C on Thu morning, min 24°C on Fri night). Winds decreasing (near gales from the SSW on Thu afternoon, light winds from the NE by Sat night).

Days 10–12 Weather Summary

Mostly dry. Warm (max 26°C on Sun afternoon, min 25°C on Sun morning). Winds decreasing (fresh winds from the NNE on Mon morning, light winds from the N by Tue afternoon).

Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
1
Monday
2
Tuesday
3
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
4:56PM1.35m
4:52AM1.50m
5:50PM1.41m
5:25AM1.59m
6:37PM1.46m
7:19PM1.48m
6:29AM1.73m
8:00PM1.48m
7:01AM1.77m
8:40PM1.46m
7:35AM1.78m
9:20PM1.42m
8:10AM1.76m
10:02PM1.38m
8:48AM1.71m
10:47PM1.34m
9:30AM1.63m
11:36PM1.31m
10:19AM1.52m
00:31AM1.29m
11:23AM1.40m
1:31AM1.31m
Low Tide
10:44AM0.60m
10:45PM0.70m
11:28AM0.44m
11:27PM0.73m
12:08PM0.29m
00:03AM0.76m
12:46PM0.18m
00:37AM0.79m
1:23PM0.11m
1:10AM0.82m
2:01PM0.07m
1:43AM0.86m
2:39PM0.08m
2:17AM0.89m
3:19PM0.13m
2:53AM0.92m
4:00PM0.21m
3:35AM0.95m
4:45PM0.32m
4:27AM0.97m
5:35PM0.44m
5:38AM0.98m
6:33PM0.56m
Wave
height (m) 
direction
period (s) 
1.1
S
5.0
1.3
S
6.0
1.2
S
6.0
1.1
S
6.0
2.1
N
7.0
2.4
N
8.0
2.3
NNE
8.0
1.9
NNE
8.0
1.6
NNE
8.0
1.4
NNE
8.0
1.3
NNE
8.0
0.9
NNE
7.0
0.8
NNE
6.0
0.8
NE
6.0
1
NE
6.0
1
NE
5.0
1.1
ENE
5.0
0.9
ENE
6.0
1.1
SSE
4.0
2
S
6.0
1.9
SSW
7.0
2.5
NNW
7.0
2.5
N
8.0
2.5
NNE
8.0
2.1
NNE
9.0
1.8
NE
9.0
1.5
NE
10.0
1.2
NE
9.0
1
ENE
8.0
1.1
ENE
8.0
1.5
SSE
7.0
1.7
S
8.0
1.4
S
8.0
1.2
S
9.0
1.1
S
9.0
1
S
8.0
thunderstorm
thunderstorm
thunderstorm
mod rain
light rain
light rain
cloud
light rain
light rain
light rain
light rain
rain showers
part cloud
part cloud
rain showers
mod rain
thunderstorm
thunderstorm
thunderstorm
mod rain
light rain
rain showers
cloud
rain showers
part cloud
part cloud
cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
risk tstorm
risk tstorm
risk tstorm
mod rain
light rain
light rain
cloudy
light rain
light rain
light rain
light rain
rain shwrs
some clouds
some clouds
rain shwrs
mod rain
risk tstorm
risk tstorm
risk tstorm
mod rain
light rain
rain shwrs
cloudy
rain shwrs
some clouds
some clouds
cloudy
clear
some clouds
some clouds
clear
some clouds
clear
clear
clear
clear
 km/h
30
S
30
SSW
30
S
25
N
40
NNE
40
NNE
40
NNE
35
NNE
25
NNE
25
NE
30
NE
15
ENE
20
NE
20
NE
25
ENE
25
E
30
ESE
20
S
35
S
50
SSW
30
NW
40
NNW
45
NNW
35
N
30
N
20
NNE
10
NE
15
NE
15
NE
25
NE
30
NNE
25
NNE
15
N
15
N
5
N
5
ENE
 mm 
3
3
10
10
2
4
1
1
1
2
1
7
7
5
9
4
7
4
1
1
max°C
28
28
28
25
24
24
23
23
23
23
22
24
25
26
26
25
26
27
27
27
26
26
26
25
24
25
25
25
26
26
26
26
26
25
26
26
Moonrise
2:47
3:22
4:01
4:45
5:36
6:35
7:39
8:45
9:51
10:53
11:51
12:45
Moonset
3:19
4:23
5:31
6:42
7:54
9:03
10:06
11:00
11:45
12:23
12:57
Sunrise
6:01
6:01
6:01
6:00
6:00
6:00
6:00
5:58
5:58
5:58
5:58
5:58
Sunset
7:27
7:28
7:28
7:29
7:29
7:30
7:30
7:30
7:30
7:31
7:31
7:31
Today's sea temperature in Hikawa (Yonakuni Sima) is 28.5 °C (Statistics for 23 May 1981-2005 – mean: 27.2 max: 28.3 min: 25.9°C)
Issued (local time): 2 am Friday 23 May 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest