Great Sound Island Sea Conditions and Tide Table

Great Sound Island 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 07:13 AM and sunset is at 05:15 PM.

Days 1–3 Weather Summary

Mostly dry. Warm air temperatures (max 21°C on Fri afternoon, min 17°C on Wed morning). Winds increasing (calm on Wed night, fresh winds from the SW by Fri night).

Days 4–6 Weather Summary

Some drizzle, heaviest during Sat morning. Warm air temperatures (max 21°C on Sat morning, min 15°C on Mon night). Winds increasing (light winds from the NE on Sun afternoon, strong winds from the NNW by Mon night).

Days 7–9 Weather Summary

Light rain (total 6mm), mostly falling on Wed night. Warm (max 21°C on Thu night, min 13°C on Tue afternoon). Winds increasing (calm on Tue night, near gales from the WSW by Wed night).

Days 10–12 Weather Summary

Heavy rain (total 25mm), heaviest during Sat night. Warm (max 21°C on Fri morning, min 11°C on Sun afternoon). Mainly severe gales.

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
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
6:43AM0.81m
6:55PM0.63m
7:24AM0.83m
7:37PM0.65m
8:03AM0.84m
8:18PM0.65m
8:40AM0.85m
8:57PM0.66m
9:17AM0.85m
9:36PM0.66m
9:53AM0.85m
10:16PM0.66m
10:31AM0.84m
10:57PM0.67m
11:11AM0.81m
11:41PM0.68m
11:54AM0.78m
00:28AM0.71m
12:43PM0.74m
1:21AM0.73m
1:37PM0.70m
2:19AM0.77m
2:37PM0.67m
3:21AM0.81m
Low Tide
1:11PM0.07m
00:51AM0.02m
1:52PM0.05m
1:32AM0.02m
2:33PM0.04m
2:11AM0.01m
3:11PM0.04m
2:50AM0.02m
3:49PM0.03m
3:29AM0.02m
4:25PM0.03m
4:10AM0.03m
5:02PM0.02m
5:40PM0.02m
5:41AM0.05m
6:21PM0.01m
6:35AM0.06m
7:05PM-0.00m
7:36AM0.06m
7:55PM-0.02m
8:42AM0.05m
8:50PM-0.04m
Wave
height (m) 
direction
period (s) 
1.5
NNE
9
1.4
NE
8
1.3
ENE
8
1.3
E
8
1.3
ESE
9
1.5
E
8
1.6
E
8
1.6
E
9
1.9
E
10
2
E
11
2
ENE
10
1.9
N
9
1.8
NNW
9
1.6
N
9
1.3
NNE
8
1.3
ENE
8
1.7
NE
7
2.1
NNW
8
3
NNW
9
3
NNW
10
2.5
NNW
10
1.9
N
10
2.3
WNW
6
3
WNW
9
2.5
NW
10
2.1
NW
10
2
NW
8
2.5
WNW
8
3
WNW
9
3
WNW
9
2.3
W
9
2
WNW
9
5
WSW
9
4.5
WNW
10
4.5
WNW
11
4.5
WNW
12
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
thunderstorm
cloud
cloud
part cloud
cloud
clear
clear
cloud
part cloud
part cloud
clear
clear
part cloud
cloud
rain showers
part cloud
part cloud
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
light rain
thunderstorm
light rain
light rain
light rain
some clouds
some clouds
some clouds
some clouds
clear
some clouds
cloudy
cloudy
some clouds
risk tstorm
cloudy
cloudy
some clouds
cloudy
clear
clear
cloudy
some clouds
some clouds
clear
clear
some clouds
cloudy
rain shwrs
some clouds
some clouds
clear
some clouds
risk tstorm
risk tstorm
risk tstorm
light rain
risk tstorm
light rain
light rain
light rain
 km/h
20
E
15
SE
20
NE
25
NE
25
NE
30
ESE
25
SE
25
SSE
35
SSW
35
N
25
N
15
NE
15
E
10
NE
10
WNW
30
NW
45
NNW
40
NNW
50
N
40
N
10
NNE
35
SW
55
WSW
50
W
15
WNW
25
WSW
40
WSW
45
WSW
50
WSW
50
WSW
20
WNW
25
SSW
75
SW
65
WNW
60
WNW
55
WNW
 mm 
1
6
1
5
3
1
7
4
2
2
max°C
18
18
19
19
19
20
20
21
21
21
19
18
18
18
19
18
19
17
14
14
14
16
18
19
20
20
21
21
21
20
20
20
21
14
12
11
Moonrise
5:11
6:09
7:05
7:57
8:44
9:25
10:01
10:33
11:02
11:30
11:58
12:28
Moonset
3:15
3:57
4:46
5:40
6:39
7:40
8:41
9:42
10:43
11:45
12:48
Sunrise
7:13
7:13
7:15
7:16
7:16
7:16
7:16
7:16
7:18
7:18
7:18
7:18
Sunset
5:15
5:15
5:16
5:16
5:17
5:17
5:19
5:19
5:20
5:21
5:21
5:22
Today's sea temperature in Great Sound Island is
22.3° C
(Statistics for 17 Dec 1981-2005 – mean: 21.5 max: 22.6 min: 20.3°C)
Issued (local time): 7 am Wednesday 17 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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