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 —.

Days 1–4 Weather Summary

A dusting of new snow. Air temperatures will be below freezing (max -1°C on Mon night, min -7°C on Tue night). Winds increasing (light winds from the N on Wed morning, near gales from the N by Thu morning).

Days 5–7 Weather Summary

A moderate fall of snow, heaviest on Fri night. Icy conditions (max 1°C on Sat morning, min -4°C on Fri morning). Winds increasing (light winds from the NNW on Fri morning, gales from the WNW by Sat afternoon).

Days 8–10 Weather Summary

Heavy rain (total 20mm), heaviest during Mon morning. Later becoming colder with a dusting of snow on Mon night. Freeze-thaw conditions (max 6°C on Mon morning, min -1°C on Sun night). Mainly gales.

Days 11–13 Weather Summary

Heavy rain (total 36mm), heaviest during Fri morning. Later becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 6°C on Thu night, min -4°C on Sat afternoon). Winds increasing (light winds from the ESE on Fri afternoon, near gales from the SW by Sat afternoon).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Sat
3
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
10:12PM1.68m
10:44AM2.04m
10:58PM1.70m
11:29AM1.99m
11:46PM1.72m
12:16PM1.93m
00:37AM1.74m
1:04PM1.85m
1:29AM1.77m
1:54PM1.78m
2:24AM1.80m
2:49PM1.72m
3:23AM1.85m
3:50PM1.68m
4:28AM1.91m
4:57PM1.68m
5:36AM2.01m
6:06PM1.72m
6:40AM2.13m
7:10PM1.77m
7:39AM2.25m
8:08PM1.83m
8:34AM2.33m
Low Tide
4:20AM0.69m
5:07PM0.75m
4:59AM0.70m
5:43PM0.75m
5:42AM0.72m
6:21PM0.74m
6:28AM0.76m
7:05PM0.74m
7:22AM0.82m
7:57PM0.74m
8:27AM0.86m
8:59PM0.73m
9:45AM0.87m
10:06PM0.70m
11:06AM0.82m
11:12PM0.65m
12:16PM0.74m
00:11AM0.61m
1:21PM0.67m
1:09AM0.55m
2:18PM0.60m
2:04AM0.51m
3:11PM0.56m
Wave
height (m) 
direction
period (s) 
1.7
S
8
1.3
SSW
9
1.2
SSW
8
1.1
SW
8
0.8
SSW
8
0.7
SE
9
2.2
E
6
3
E
9
3
SSE
12
2.5
SE
11
1.8
SE
11
2.5
ESE
9
4
SE
11
3
SE
11
3.5
WNW
7
3
W
8
2.4
WSW
7
2
WSW
7
1.4
SW
7
4.5
SE
9
3
SE
10
4.5
S
10
4.5
SSW
11
4
SSW
11
3
SSW
10
3
SSW
10
2.5
SSW
10
2.3
SSW
9
1.8
SSW
9
1.5
S
9
3.5
SSE
8
3.5
SSE
9
3
SSE
9
3
SSE
10
5
SW
11
7
SW
13
cloud
cloud
cloud
cloud
part cloud
part cloud
light snow
light snow
light snow
part cloud
part cloud
light snow
heavy snow
light snow
cloud
part cloud
part cloud
part cloud
rain showers
heavy rain
cloud
snow showers
cloud
cloud
part cloud
clear
cloud
cloud
cloud
part cloud
heavy rain
heavy rain
mod rain
light snow
cloud
cloud
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
light snow
light snow
light snow
some clouds
some clouds
light snow
heavy snow
light snow
cloudy
some clouds
some clouds
some clouds
rain shwrs
heavy rain
cloudy
snow shwrs
cloudy
cloudy
some clouds
clear
cloudy
cloudy
cloudy
some clouds
heavy rain
heavy rain
mod rain
light snow
cloudy
cloudy
 km/h
25
NNE
20
NNW
25
NW
25
NW
10
N
20
ENE
40
NE
55
N
45
NW
30
W
20
NNE
50
N
55
N
55
NNW
65
WNW
50
W
35
WSW
25
SW
30
SE
45
S
20
ESE
45
SW
40
SW
30
SSW
35
SW
30
SW
25
SW
25
WSW
25
SW
15
SE
55
SSE
40
SSE
5
ESE
45
WSW
50
SW
60
SW
 mm 
2
11
7
12
17
7
max°C
-1
-4
-4
-5
-7
-6
-3
-2
-2
-2
-2
-3
0
1
0
-1
-2
-1
3
6
4
4
1
2
1
2
2
1
2
2
6
6
3
4
-3
-4
Moonrise
10:31
10:52
11:10
11:27
11:43
12:01
12:22
12:49
1:25
2:14
3:20
4:39
Moonset
7:56
9:09
10:22
11:35
12:51
2:10
3:33
4:59
6:22
7:35
8:32
Sunrise
7:54
7:54
7:54
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
Sunset
4:25
4:25
4:27
4:28
4:28
4:29
4:30
4:30
4:31
4:32
4:34
4:35
Today's sea temperature in Great St Lawrence Harbour (2) is
3.2° C
(Statistics for 22 Dec 1981-2005 – mean: 3.0 max: 5.1 min: 1.4°C)
Issued (local time): 7 pm Monday 22 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest