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 05:58 AM and sunset is at 05:04 PM.

Days 1–3 Weather Summary

Moderate rain (total 11mm), heaviest on Thu afternoon. Warm air temperatures (max 27°C on Thu morning, min 26°C on Thu afternoon). Mainly fresh winds.

Days 4–6 Weather Summary

Moderate rain (total 17mm), heaviest on Sun afternoon. Warm air temperatures (max 27°C on Sun morning, min 26°C on Sun afternoon). Winds increasing (light winds from the ENE on Sun morning, fresh winds from the ENE by Mon night).

Days 7–9 Weather Summary

Moderate rain (total 18mm), heaviest on Wed night. Warm (max 27°C on Thu night, min 26°C on Wed morning). Mainly strong winds.

Days 10–12 Weather Summary

Heavy rain (total 24mm), heaviest during Sun morning. Warm (max 27°C on Sat morning, min 25°C on Sat night). Mainly fresh winds.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
8:14AM0.18m
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
Wave
height (m) 
direction
period (s) 
1.1
NE
6
1
ENE
6
0.9
ENE
5
1
E
6
1
E
7
1.1
E
6
1.2
E
6
1.2
E
6
1.3
E
6
1.3
ENE
6
1.2
ENE
6
1.3
NE
5
1.4
NE
6
1.5
NE
6
2
ENE
7
1.8
ENE
7
1.9
ENE
7
2
ENE
7
2
ENE
7
2.1
ENE
7
2.5
NE
8
2.5
ENE
8
2.5
ENE
8
3
ENE
8
2.2
ENE
8
2.1
ENE
8
2
ENE
7
1.6
ENE
7
1.6
ENE
7
1.7
ENE
7
2.3
ENE
7
2.3
ENE
7
2.1
ENE
7
1.8
ENE
7
1.7
ENE
7
1.8
ENE
7
thunderstorm
rain showers
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
clear
clear
part cloud
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
part cloud
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
risk tstorm
rain shwrs
risk tstorm
clear
risk tstorm
risk tstorm
risk tstorm
clear
clear
some clouds
rain shwrs
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
some clouds
clear
some clouds
clear
clear
risk tstorm
risk tstorm
risk tstorm
risk tstorm
rain shwrs
risk tstorm
risk tstorm
 km/h
20
ESE
15
ESE
25
E
25
E
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
20
NE
30
NE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
40
ENE
35
ENE
35
ENE
25
E
25
ENE
30
E
 mm 
1
2
2
1
4
1
2
2
1
1
2
2
2
5
2
2
8
3
2
1
4
5
3
1
1
5
5
max°C
27
27
27
27
27
26
27
27
27
27
27
26
27
27
27
27
26
26
26
26
26
26
26
27
26
27
27
27
26
26
26
26
27
26
26
26
Moonrise
4:48
5:42
6:34
7:24
8:10
8:52
9:31
10:08
10:45
11:21
12:00
12:42
Moonset
3:57
4:47
5:41
6:36
7:31
8:25
9:18
10:11
11:03
11:58
12:55
Sunrise
5:58
5:58
6:00
6:00
6:01
6:01
6:01
6:01
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 am Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest