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 — and sunset is at 05:15 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Fri morning. Warm air temperatures (max 21°C on Thu night, min 18°C on Sat night). Winds decreasing (fresh winds from the N on Sat afternoon, light winds from the WNW by Sun morning).

Days 5–7 Weather Summary

Mostly dry. Cool air temperatures (max 18°C on Sun night, min 14°C on Mon night). Winds decreasing (strong winds from the NNW on Mon afternoon, calm by Tue night).

Days 8–10 Weather Summary

Moderate rain (total 11mm), heaviest on Wed night. Warm (max 20°C on Fri afternoon, min 17°C on Wed night). Winds decreasing (strong winds from the NNE on Wed night, light winds from the SSW by Fri afternoon).

Days 11–13 Weather Summary

Moderate rain (total 18mm), heaviest on Tue morning. Warm (max 20°C on Sat night, min 15°C on Sun night). Winds increasing (light winds from the WNW on Mon afternoon, strong winds from the NNE by Tue morning).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
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
3:40PM0.65m
4:24AM0.85m
4:45PM0.65m
Low Tide
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
9:51AM0.03m
9:48PM-0.06m
10:59AM-0.00m
Wave
height (m) 
direction
period (s) 
1.4
E
8
1.8
E
8
1.8
ESE
8
1.9
E
10
1.8
E
10
1.8
E
10
1.9
NE
10
1.8
NNE
9
1.6
NNE
9
1.3
NE
8
1.4
ENE
8
2.5
NNW
8
3
NNW
10
3
NNW
11
2.4
NNW
10
1.9
N
10
1.4
NNE
9
1.5
NNE
9
1.9
NW
9
1.9
NNW
8
1.7
NNW
8
1.4
N
8
1.3
NE
8
1.2
NE
8
1.2
ENE
8
1.3
E
7
1.8
ENE
8
2
NW
8
1.9
WNW
8
1.9
NW
8
1.8
NNW
8
1.7
NNE
8
1.5
NNE
9
1.4
NNE
9
2.3
NW
6
2
NNW
8
part cloud
rain showers
part cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
mod rain
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
cloud
clear
part cloud
light rain
heavy rain
part cloud
some clouds
rain shwrs
some clouds
cloudy
some clouds
some clouds
cloudy
cloudy
some clouds
clear
some clouds
some clouds
some clouds
clear
clear
some clouds
clear
some clouds
mod rain
clear
clear
some clouds
cloudy
some clouds
some clouds
some clouds
rain shwrs
rain shwrs
some clouds
some clouds
cloudy
clear
some clouds
light rain
heavy rain
some clouds
 km/h
30
ESE
35
SE
30
SSE
25
SSW
25
WSW
35
N
15
NNE
10
WNW
15
NW
15
WNW
40
NNW
50
NNW
45
NNE
35
NNE
20
NE
0
SSE
20
WSW
40
W
40
NNE
35
NE
30
ENE
20
ESE
15
SE
15
SSW
25
SW
30
WSW
35
W
35
NW
35
NNW
35
N
30
N
10
N
10
WSW
35
SW
45
NNE
30
NNE
 mm 
1
10
1
2
3
13
max°C
21
21
21
21
21
20
18
18
18
18
18
17
15
15
15
16
17
18
18
17
17
18
19
20
20
20
20
20
19
18
17
16
16
18
17
17
Moonrise
7:05
7:57
8:44
9:25
10:01
10:33
11:02
11:30
11:58
12:28
1:01
1:40
Moonset
4:46
5:40
6:39
7:40
8:41
9:42
10:43
11:45
12:48
1:54
3:04
Sunrise
7:15
7:16
7:16
7:16
7:16
7:16
7:18
7:18
7:18
7:18
7:18
7:20
Sunset
5:15
5:16
5:16
5:17
5:17
5:19
5:19
5:20
5:21
5:21
5:22
5:22
5:22
Today's sea temperature in Great Sound Island is
22.1° C
(Statistics for 18 Dec 1981-2005 – mean: 21.4 max: 22.5 min: 20.3°C)
Issued (local time): 7 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest