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 07:16 AM and sunset is at 05:17 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Mon morning. Warm air temperatures (max 20°C on Sun afternoon, min 15°C on Mon night). Winds increasing (calm on Sun morning, near gales from the NNW by Mon afternoon).

Days 4–6 Weather Summary

Light rain (total 4mm), mostly falling on Wed afternoon. Warm air temperatures (max 21°C on Fri night, min 16°C on Wed night). Winds decreasing (near gales from the WSW on Wed morning, light winds from the SE by Thu night).

Days 7–9 Weather Summary

Light rain (total 7mm), mostly falling on Sat afternoon. Warm (max 20°C on Sat morning, min 14°C on Sat night). Winds decreasing (strong winds from the N on Sat afternoon, calm by Mon morning).

Days 10–12 Weather Summary

Moderate rain (total 16mm), heaviest on Thu night. Warm (max 20°C on Thu morning, min 15°C on Tue morning). Winds increasing (light winds from the ESE on Wed afternoon, strong winds from the S by Thu afternoon).

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
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
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
3:40PM0.65m
4:24AM0.85m
4:45PM0.65m
5:27AM0.90m
5:48PM0.66m
6:28AM0.93m
6:49PM0.68m
Low Tide
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
9:51AM0.03m
9:48PM-0.06m
10:59AM-0.00m
10:49PM-0.09m
12:02PM-0.04m
11:50PM-0.12m
1:02PM-0.08m
00:49AM-0.16m
Wave
height (m) 
direction
period (s) 
1.8
N
9
1.6
NNE
9
1.4
NE
8
1.5
ENE
8
2.5
NNW
8
3
NNW
10
3
NNW
10
2.2
N
10
1.7
N
10
2.3
W
7
2.4
WNW
9
2.5
NW
9
2.5
NNW
10
2.3
N
10
1.8
N
9
1.5
NE
10
1.4
NE
11
1.7
W
6
2.2
W
8
2.3
WNW
10
2.5
NW
9
2.5
NNW
10
2.2
N
10
1.7
N
9
1.4
NNE
9
1.3
NNE
8
2.1
N
8
2.5
N
8
2.4
N
9
2.1
NNE
9
1.8
NNE
9
1.7
NNE
10
1.7
NNE
10
2
S
6
2.5
SSW
7
3
WSW
9
clear
cloud
part cloud
rain showers
part cloud
part cloud
cloud
part cloud
part cloud
cloud
thunderstorm
clear
part cloud
clear
clear
clear
clear
rain showers
rain showers
thunderstorm
cloud
cloud
cloud
cloud
cloud
part cloud
rain showers
rain showers
cloud
cloud
part cloud
part cloud
cloud
light rain
thunderstorm
thunderstorm
clear
cloudy
some clouds
rain shwrs
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
risk tstorm
clear
some clouds
clear
clear
clear
clear
rain shwrs
rain shwrs
risk tstorm
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
rain shwrs
rain shwrs
cloudy
cloudy
some clouds
some clouds
cloudy
light rain
risk tstorm
risk tstorm
 km/h
10
WNW
10
WNW
25
WNW
40
NNW
50
N
40
N
20
NNE
10
N
30
SSW
50
WSW
40
NW
45
NNW
35
N
30
NNE
10
E
20
S
30
SW
40
SW
45
WSW
50
N
40
NE
35
NE
25
ENE
10
ENE
5
W
20
WNW
40
N
45
NNE
35
NNE
20
NE
15
E
20
SE
35
S
45
SSW
50
S
50
SW
 mm 
1
3
1
1
4
2
1
1
2
11
max°C
19
20
20
19
17
15
15
15
17
19
19
19
17
17
17
17
19
21
20
20
17
15
16
16
17
17
17
16
16
16
16
17
19
20
20
19
Moonrise
8:44
9:25
10:01
10:33
11:02
11:30
11:58
12:28
1:01
1:40
2:28
3:25
Moonset
6:39
7:40
8:41
9:42
10:43
11:45
12:48
1:54
3:04
4:18
5:32
Sunrise
7:16
7:16
7:16
7:16
7:18
7:18
7:18
7:18
7:18
7:20
7:20
7:20
Sunset
5:17
5:17
5:19
5:19
5:20
5:21
5:21
5:22
5:22
5:22
5:23
5:24
Today's sea temperature in Great Sound Island is
21.9° C
(Statistics for 21 Dec 1981-2005 – mean: 21.2 max: 22.5 min: 20.1°C)
Issued (local time): 1 am Sunday 21 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest