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 06:07 PM.

Days 1–3 Weather Summary

Heavy rain (total 28mm), heaviest during Sat afternoon. Warm air temperatures (max 21°C on Sun night, min 16°C on Fri morning). Winds decreasing (strong winds from the NE on Fri morning, calm by Sun morning).

Days 4–6 Weather Summary

Heavy rain (total 26mm), heaviest during Mon night. Warm air temperatures (max 22°C on Mon morning, min 17°C on Tue night). Mainly gales.

Days 7–9 Weather Summary

Heavy rain (total 35mm), heaviest during Fri night. Warm (max 20°C on Fri afternoon, min 19°C on Thu morning). Mainly strong winds.

Days 10–12 Weather Summary

Heavy rain (total 47mm), heaviest during Sun afternoon. Very mild (max 19°C on Sun morning, min 15°C on Mon afternoon). Winds decreasing (near gales from the NNE on Mon morning, moderate winds from the ENE by Tue night).

Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tuesday
6
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
11:54AM1.19m
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
9:30AM1.26m
8:38PM1.54m
Low Tide
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
2:44PM0.59m
3:31AM-0.03m
Wave
height (m) 
direction
period (s) 
3.5
NNE
10
3
NNE
10
2.5
NNE
10
1.9
NNE
9
1.6
NNE
9
1.3
NNE
8
1.3
NNE
8
1.2
NNE
7
1.4
NE
7
1.4
NE
7
1.4
ENE
7
1.9
ENE
8
2.4
NE
7
4.5
NNE
9
5
NNE
10
3.5
NE
10
3
NE
10
2.5
NE
9
2.1
NE
8
2
NE
8
1.8
NE
7
1.5
NE
7
1.5
NE
7
1.6
NE
6
1.6
NE
7
2.2
NE
7
2.4
NE
8
2.4
NE
7
2.5
NE
7
2.3
NE
7
2.5
NNE
8
3
NNE
8
3
N
9
2.5
NNE
9
2.5
NNE
9
2.3
NNE
8
light rain
light rain
light rain
light rain
rain showers
rain showers
rain showers
part cloud
rain showers
part cloud
rain showers
rain showers
light rain
light rain
mod rain
light rain
cloud
light rain
light rain
light rain
light rain
light rain
rain showers
rain showers
light rain
light rain
mod rain
mod rain
heavy rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
rain shwrs
rain shwrs
rain shwrs
some clouds
rain shwrs
some clouds
rain shwrs
rain shwrs
light rain
light rain
mod rain
light rain
cloudy
light rain
light rain
light rain
light rain
light rain
rain shwrs
rain shwrs
light rain
light rain
mod rain
mod rain
heavy rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
 km/h
40
NE
40
NE
35
ENE
30
E
10
SE
10
ESE
5
SE
10
N
15
NNE
20
NE
15
NE
15
E
45
NNE
65
N
60
NNE
45
NNE
40
NNE
35
NE
35
NE
35
NE
30
NE
30
NNE
30
NNE
30
NE
30
NE
40
ENE
40
ENE
45
ENE
50
NNE
50
NNE
50
NNE
50
NNE
40
NNE
40
NNE
40
NNE
35
NE
 mm 
2
2
2
3
7
9
2
1
1
10
3
2
6
2
2
2
2
5
3
1
6
4
3
9
10
21
3
1
2
4
2
2
2
max°C
16
17
19
19
19
20
20
20
21
22
22
22
22
19
18
18
18
19
19
19
19
19
20
20
19
19
20
19
18
18
17
15
15
15
15
17
Moonrise
11:40
12:12
12:45
1:21
2:02
2:50
3:45
4:49
5:58
7:08
8:16
9:19
Moonset
11:43
12:40
1:40
2:43
3:50
5:00
6:11
7:18
8:17
9:07
9:50
Sunrise
7:28
7:28
7:30
7:30
7:30
7:31
7:31
7:31
7:31
7:31
7:31
7:31
Sunset
6:07
6:07
6:07
6:07
6:08
6:08
6:09
6:10
6:12
6:12
6:13
6:14
Today's sea temperature in Hikawa (Yonakuni Sima) is
25.4° C
(Statistics for 26 Dec 1981-2005 – mean: 23.6 max: 24.7 min: 22.5°C)
Issued (local time): 2 am Friday 26 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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