Great St Lawrence Harbour (2) Sea Conditions and Tide Table

Great St Lawrence Harbour (2) 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 09:08 PM.

Days 1–4 Weather Summary

Mostly dry. Cool air temperatures (max 14°C on Sun afternoon, min 8°C on Sat night). Winds decreasing (strong winds from the WSW on Sat afternoon, light winds from the SW by Sun night).

Days 5–7 Weather Summary

Mostly dry. Cool air temperatures (max 16°C on Wed morning, min 6°C on Wed night). Winds decreasing (strong winds from the WNW on Wed morning, calm by Thu morning).

Days 8–10 Weather Summary

Mostly dry. Very mild (max 18°C on Sat morning, min 8°C on Thu night). Winds decreasing (fresh winds from the W on Fri morning, light winds from the WNW by Fri night).

Days 11–13 Weather Summary

Moderate rain (total 13mm), heaviest on Sun night. Warm (max 20°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light.

Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
1
Wed
2
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
5:27AM1.66m
6:03PM1.88m
6:37AM1.66m
7:10PM1.98m
7:43AM1.70m
8:12PM2.09m
8:43AM1.75m
9:08PM2.18m
9:37AM1.77m
10:01PM2.23m
10:30AM1.78m
10:54PM2.22m
11:22AM1.77m
11:46PM2.17m
12:13PM1.75m
00:36AM2.08m
1:02PM1.72m
1:23AM1.95m
1:47PM1.68m
2:08AM1.81m
2:31PM1.64m
2:50AM1.66m
3:13PM1.60m
Low Tide
11:25PM0.77m
11:43AM0.64m
00:41AM0.70m
12:45PM0.58m
1:48AM0.63m
1:43PM0.53m
2:48AM0.56m
2:38PM0.49m
3:43AM0.52m
3:30PM0.47m
4:33AM0.52m
4:20PM0.46m
5:19AM0.54m
5:08PM0.48m
6:00AM0.59m
5:53PM0.53m
6:37AM0.67m
6:37PM0.60m
7:14AM0.74m
7:22PM0.69m
7:50AM0.82m
8:10PM0.79m
8:31AM0.89m
Wave
height (m) 
direction
period (s) 
1.6
SSE
7.0
2.4
SSW
7.0
2.5
SSW
8.0
2
SSW
8.0
1.5
SSW
8.0
1.3
SSW
8.0
1
S
8.0
1
S
7.0
1.1
S
7.0
1.3
SSW
7.0
1.1
SSW
7.0
1.1
SSW
7.0
1.2
SSW
7.0
1.5
SSW
7.0
1.8
SW
7.0
1.1
SW
8.0
0.8
S
7.0
0.8
S
7.0
0.7
S
6.0
0.8
S
6.0
0.9
WSW
4.0
0.8
SSW
5.0
0.6
S
8.0
0.7
S
8.0
0.7
SSE
7.0
0.8
S
7.0
0.9
SSW
4.0
1.6
S
6.0
1.5
S
7.0
1.5
S
8.0
1.2
S
8.0
1.5
S
6.0
1.5
S
7.0
1.4
SSW
7.0
1.1
S
7.0
1
S
7.0
cloud
cloud
clear
clear
clear
clear
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
heavy rain
part cloud
clear
part cloud
cloud
light rain
clear
clear
clear
cloudy
cloudy
clear
clear
clear
clear
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
heavy rain
some clouds
clear
some clouds
cloudy
light rain
clear
clear
clear
 km/h
25
SSW
35
SW
40
WSW
30
WSW
25
WNW
15
W
10
SSW
10
SSE
15
SSE
5
SSW
15
SW
20
SW
25
SW
30
W
40
WNW
15
NE
5
SSE
10
SW
15
WSW
25
W
30
W
15
WNW
15
W
20
WSW
15
SW
25
SSW
25
SSW
25
S
10
WNW
20
W
15
SSW
20
SW
25
WSW
20
W
15
W
20
WSW
 mm 
12
1
max°C
13
13
13
10
11
14
12
12
12
12
15
15
12
16
16
12
10
11
10
14
16
15
18
17
13
15
15
13
17
18
13
14
15
13
19
20
Moonrise
1:39
2:00
2:25
2:59
3:45
4:46
6:00
7:20
8:40
9:55
11:07
12:15
1:22
Moonset
3:37
5:01
6:28
7:52
9:06
10:04
10:47
11:17
11:40
11:59
12:14
12:29
Sunrise
5:16
5:16
5:16
5:16
5:16
5:18
5:18
5:18
5:18
5:18
5:20
5:20
Sunset
9:08
9:08
9:08
9:09
9:09
9:09
9:09
9:09
9:09
9:09
9:08
9:08
9:08
Today's sea temperature in Great St Lawrence Harbour (2) is 7.9 °C (Statistics for 20 Jun 1981-2005 – mean: 8.5 max: 11.0 min: 6.9°C)
Issued (local time): 8 pm Friday 20 Jun 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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