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 — and sunset is at 06:00 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Wed night. Warm air temperatures (max 22°C on Tue morning, min 20°C on Mon night). Mainly fresh winds.

Days 5–7 Weather Summary

Light rain (total 9mm), mostly falling on Sun afternoon. Warm air temperatures (max 24°C on Fri night, min 20°C on Sun afternoon). Winds increasing (light winds from the SSE on Fri night, gales from the NNE by Sun afternoon).

Days 8–10 Weather Summary

Light rain (total 9mm), mostly falling on Sun night. Warm (max 22°C on Wed morning, min 18°C on Sun night). Winds decreasing (near gales from the NNE on Sun night, light winds from the ENE by Wed morning).

Days 11–13 Weather Summary

Heavy rain (total 27mm), heaviest during Thu night. Warm (max 22°C on Wed night, min 15°C on Fri night). Winds increasing (calm on Thu afternoon, near gales from the N by Fri afternoon).

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
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
4:52AM1.10m
4:13PM1.34m
5:55AM1.15m
4:57PM1.42m
6:46AM1.20m
5:38PM1.48m
7:31AM1.23m
6:17PM1.54m
8:11AM1.25m
6:56PM1.58m
8:49AM1.25m
7:36PM1.59m
9:25AM1.24m
8:16PM1.57m
10:01AM1.23m
8:57PM1.52m
10:37AM1.21m
9:42PM1.43m
11:14AM1.20m
10:30PM1.33m
11:54AM1.19m
11:27PM1.20m
12:38PM1.19m
Low Tide
10:24PM0.38m
10:08AM0.69m
11:17PM0.23m
11:00AM0.72m
00:03AM0.10m
11:46AM0.74m
00:46AM-0.00m
12:28PM0.74m
1:26AM-0.07m
1:07PM0.73m
2:05AM-0.11m
1:45PM0.72m
2:43AM-0.10m
2:24PM0.70m
3:21AM-0.05m
3:05PM0.68m
3:59AM0.02m
3:49PM0.66m
4:38AM0.13m
4:38PM0.64m
5:19AM0.25m
5:36PM0.62m
6:02AM0.39m
Wave
height (m) 
direction
period (s) 
1.3
NNE
8
1.1
NE
7
0.9
NNE
7
1
NE
7
0.9
ENE
6
0.8
E
6
1
E
4
1.5
N
7
1.6
NNE
7
1.6
NE
6
1.3
ENE
6
1.3
E
5
1.3
ESE
5
1.1
ESE
8
1.2
ESE
8
1.2
ESE
9
1.1
ESE
9
2.5
N
7
4.5
NNE
10
4
NNE
10
3.5
NNE
10
2.5
NNE
10
2
NNE
9
1.7
NNE
9
1.4
NNE
8
1.2
NE
8
1.1
NE
8
1.1
NE
8
1.1
NE
7
1.1
NE
7
1.3
NNE
6
3.5
N
8
4
N
10
4
N
10
3
NNE
10
2.5
NNE
9
cloud
clear
part cloud
clear
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
cloud
light rain
cloud
cloud
part cloud
rain showers
rain showers
light rain
light rain
light rain
light rain
rain showers
cloud
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
clear
mod rain
light rain
light rain
light rain
cloud
cloud
cloudy
clear
some clouds
clear
some clouds
some clouds
rain shwrs
some clouds
some clouds
some clouds
cloudy
light rain
cloudy
cloudy
some clouds
rain shwrs
rain shwrs
light rain
light rain
light rain
light rain
rain shwrs
cloudy
some clouds
some clouds
some clouds
some clouds
rain shwrs
rain shwrs
clear
mod rain
light rain
light rain
light rain
cloudy
cloudy
 km/h
20
E
25
ESE
20
ESE
25
E
25
E
20
ENE
30
E
30
E
25
E
30
ESE
30
ESE
30
SE
30
SSE
25
SE
20
ESE
20
E
30
NNE
55
NNE
60
NNE
45
NNE
40
NNE
30
NE
25
NE
20
ENE
15
ENE
10
ENE
15
ENE
25
E
10
SSE
5
SSW
30
NNE
55
NNE
55
N
50
NNE
40
NNE
35
NNE
 mm 
1
2
1
2
4
4
2
2
1
3
3
10
3
3
5
max°C
21
22
22
22
22
22
22
22
22
23
23
23
24
24
23
23
22
22
20
18
18
19
20
21
21
22
22
22
22
22
22
18
16
16
16
16
Moonrise
3:58
4:51
5:46
6:41
7:35
8:26
9:12
9:54
10:32
11:07
11:40
12:12
Moonset
3:05
3:43
4:25
5:12
6:04
6:59
7:56
8:54
9:51
10:47
11:43
Sunrise
7:24
7:24
7:24
7:24
7:26
7:26
7:26
7:26
7:28
7:28
7:28
7:28
Sunset
6:00
6:01
6:01
6:02
6:02
6:02
6:04
6:04
6:05
6:05
6:06
6:07
6:07
Today's sea temperature in Hikawa (Yonakuni Sima) is
26.1° C
(Statistics for 15 Dec 1981-2005 – mean: 24.1 max: 25.3 min: 23.1°C)
Issued (local time): 8 pm Monday 15 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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