Harbor Bay, Great Swan Island Sea Conditions and Tide Table

Harbor Bay, Great Swan 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 05:04 PM.

Days 1–4 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Warm air temperatures (max 27°C on Thu afternoon, min 26°C on Thu afternoon). Mainly fresh winds.

Days 5–7 Weather Summary

Moderate rain (total 19mm), heaviest on Tue night. Warm air temperatures (max 27°C on Sun afternoon, min 26°C on Sun night). Mainly fresh winds.

Days 8–10 Weather Summary

Moderate rain (total 16mm), heaviest on Wed night. Warm (max 27°C on Wed afternoon, min 26°C on Wed afternoon). Mainly strong winds.

Days 11–13 Weather Summary

Light rain (total 4mm), mostly falling on Sun morning. Warm (max 26°C on Sat afternoon, min 25°C on Sun morning). Mainly fresh winds.

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
AM
Wave Height Map
High Tide
7:03PM0.30m
8:47AM0.18m
7:42PM0.31m
9:21AM0.17m
8:20PM0.31m
9:57AM0.17m
8:59PM0.31m
10:34AM0.17m
9:37PM0.30m
11:13AM0.17m
10:18PM0.29m
11:51AM0.18m
11:04PM0.27m
12:29PM0.19m
11:57PM0.24m
1:07PM0.20m
1:04AM0.20m
1:47PM0.23m
2:28AM0.17m
2:32PM0.25m
4:06AM0.16m
3:23PM0.28m
5:35AM0.15m
Low Tide
1:14PM0.10m
2:52AM-0.02m
1:49PM0.09m
3:29AM-0.02m
2:23PM0.09m
4:06AM-0.02m
2:59PM0.09m
4:42AM-0.02m
3:37PM0.09m
5:19AM-0.02m
4:20PM0.08m
5:55AM-0.01m
5:12PM0.08m
6:33AM0.01m
6:14PM0.08m
7:11AM0.02m
7:30PM0.06m
7:52AM0.04m
8:52PM0.04m
8:37AM0.06m
10:11PM0.01m
9:27AM0.08m
11:22PM-0.03m
10:20AM0.09m
Wave
height (m) 
direction
period (s) 
1
ENE
6
0.9
E
7
1
E
6
0.9
ESE
7
1
E
7
1.1
E
7
1.1
E
5
1.4
E
6
1.3
ENE
6
1.1
ENE
6
1.2
NE
5
1.4
NE
6
1.4
NE
6
1.7
ENE
6
1.6
NE
7
1.4
ENE
6
1.5
ENE
6
1.7
ENE
6
1.5
ENE
6
1.8
NE
7
2
NE
7
2.4
NE
8
2.5
ENE
8
2.3
ENE
8
2.4
ENE
8
2.4
ENE
8
1.9
ENE
7
1.6
ENE
7
1.8
ENE
7
1.6
ENE
7
1.3
ENE
6
1.4
ENE
6
1.3
ENE
6
1
ENE
6
1
ENE
6
1
ENE
6
rain showers
clear
clear
thunderstorm
rain showers
clear
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
rain showers
rain showers
thunderstorm
clear
clear
clear
clear
rain shwrs
clear
clear
risk tstorm
rain shwrs
clear
risk tstorm
risk tstorm
clear
risk tstorm
risk tstorm
clear
risk tstorm
clear
clear
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
clear
clear
clear
rain shwrs
rain shwrs
risk tstorm
clear
clear
clear
clear
 km/h
15
ESE
25
E
20
E
20
ENE
20
NE
25
ENE
25
ENE
30
ENE
25
ENE
20
NE
25
ENE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
25
ENE
30
ENE
25
ENE
30
ENE
35
ENE
40
ENE
40
ENE
40
ENE
35
ENE
40
ENE
25
NE
25
ENE
30
ENE
25
ENE
20
ESE
30
E
20
E
15
ESE
20
ESE
25
ESE
 mm 
2
1
1
1
1
1
4
1
1
9
3
2
4
3
2
1
1
2
1
1
1
2
max°C
27
27
27
27
27
27
27
27
27
27
26
27
27
27
27
26
26
27
27
26
26
26
27
26
26
27
26
26
26
25
26
26
26
26
26
26
Moonrise
5:42
6:34
7:24
8:10
8:52
9:31
10:08
10:45
11:21
12:00
12:42
1:30
Moonset
3:57
4:47
5:41
6:36
7:31
8:25
9:18
10:11
11:03
11:58
12:55
1:57
Sunrise
5:58
6:00
6:00
6:01
6:01
6:01
6:01
6:03
6:03
6:03
6:03
6:03
Sunset
5:04
5:05
5:05
5:06
5:06
5:07
5:07
5:07
5:07
5:08
5:09
5:09
Today's sea temperature in Harbor Bay, Great Swan Island is
28.6° C
(Statistics for 18 Dec 1981-2005 – mean: 27.2 max: 27.9 min: 26.7°C)
Issued (local time): 5 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest