Great St Lawrence Sea Conditions and Tide Table

Great St Lawrence 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 05:43 AM and sunset is at 08:51 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Tue night. Cool air temperatures (max 19°C on Sun morning, min 13°C on Mon night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 20°C on Wed afternoon, min 12°C on Fri night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Very mild (max 16°C on Mon morning, min 12°C on Sat night). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Very mild (max 19°C on Thu afternoon, min 12°C on Tue night). Wind will be generally light.

Days 13–16 Weather Summary

Mostly dry. Very mild (max 18°C on Fri afternoon, min 13°C on Fri night). Wind will be generally light.

Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Mon
10
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
High Tide
6:54AM1.46m
7:43PM1.90m
7:54AM1.50m
8:33PM1.94m
8:42AM1.56m
9:15PM1.98m
9:21AM1.63m
9:52PM2.00m
9:55AM1.70m
10:26PM2.00m
10:29AM1.77m
10:57PM1.98m
11:03AM1.83m
11:29PM1.94m
11:41AM1.87m
00:04AM1.88m
12:24PM1.90m
00:42AM1.81m
1:16PM1.92m
1:26AM1.74m
2:15PM1.94m
2:17AM1.67m
3:18PM1.97m
3:14AM1.62m
4:20PM2.00m
4:15AM1.59m
5:24PM2.04m
5:24AM1.59m
6:31PM2.08m
Low Tide
12:48PM0.77m
1:44AM0.86m
1:28PM0.72m
2:21AM0.79m
2:05PM0.67m
2:57AM0.73m
2:41PM0.64m
3:33AM0.67m
3:19PM0.61m
4:09AM0.61m
3:58PM0.61m
4:44AM0.57m
4:40PM0.62m
5:19AM0.53m
5:25PM0.64m
5:55AM0.51m
6:12PM0.67m
6:32AM0.51m
7:02PM0.73m
7:12AM0.53m
7:57PM0.79m
7:58AM0.57m
9:04PM0.85m
8:56AM0.62m
10:28PM0.88m
10:19AM0.64m
11:47PM0.83m
11:42AM0.60m
Wave
Height (m)
Direction
Period (s)
0.7
SSW
8
0.6
SSW
7
0.6
SSW
7
0.8
SSE
8
1.1
S
8
1.2
S
8
1.2
S
8
1.4
SSW
9
1.6
SSW
9
1.2
SSW
9
1.1
SSW
8
1
S
8
1.1
S
8
1.1
SSW
9
1.1
SSW
9
1.1
SSW
9
1.1
SSW
10
1
SSW
9
1.1
SSW
10
1.2
SSW
10
1.1
SSW
9
1
SSW
9
0.9
SSW
9
1.2
SSW
10
1
SSW
9
0.9
SSW
9
0.8
SSW
8
0.7
SSW
8
0.7
SSW
8
0.8
SSW
8
0.8
S
7
0.9
S
8
1.1
SSE
8
1.3
ESE
9
1.4
ESE
10
1.5
ESE
10
1.4
ESE
10
1.1
ESE
9
1.1
ESE
9
1
ESE
9
1
ESE
9
1
SE
8
0.9
ESE
8
1
ESE
9
0.9
ESE
9
1
ESE
10
0.9
ESE
9
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
light rain
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
light rain
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
cloudy
some clouds
some clouds
clear
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
clear
some clouds
km/h
5
SE
10
ESE
10
E
20
ENE
15
E
10
ENE
25
ENE
20
ENE
15
NE
15
NNW
10
NW
5
NNW
5
NNE
5
W
5
NE
15
ESE
15
SSE
5
SSE
10
SE
10
SE
10
SE
15
ESE
10
SE
0
SSW
5
S
10
SSW
10
SSE
15
ESE
20
SE
15
ESE
15
ENE
15
E
10
NNE
15
NE
20
NE
15
ENE
20
ENE
15
E
15
E
15
E
15
ESE
15
ESE
20
E
10
ESE
5
NE
10
ENE
5
SSE
 mm
1
max °C
19
19
15
16
17
15
16
17
14
18
20
17
19
20
18
15
15
13
15
15
13
15
15
14
16
16
14
13
14
12
15
18
15
17
19
17
17
18
16
16
18
15
15
17
16
17
18
Moonrise
7:28
8:08
8:39
9:04
9:24
9:42
9:58
10:14
10:31
10:51
11:16
11:48
12:33
1:32
2:47
Moonset
2:16
3:12
4:17
5:25
6:36
7:47
8:57
10:08
11:20
12:35
1:54
3:15
4:35
5:47
6:47
7:32
Sunrise
5:43
5:43
5:45
5:46
5:48
5:48
5:50
5:50
5:52
5:54
5:54
5:56
5:56
5:58
6:00
6:01
Sunset
8:51
8:50
8:49
8:47
8:46
8:45
8:44
8:43
8:40
8:39
8:37
8:37
8:35
8:34
8:31
8:30
Today's sea temperature in Great St Lawrence is
10.5° C
(Statistics for 26 Jul 1981-2005 – mean: 14.2 max: 16.0 min: 12.0°C)
Issued (local time): 8 am Sunday 26 Jul 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest