Great Diamond Island Sea Conditions and Tide Table

Great Diamond 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 07:01 AM and sunset is at 06:40 PM.

Days 1–3 Weather Summary

A dusting of snow turning to light rain (total 4mm) on Fri night. Icy conditions (max 14°C on Thu morning, min -3°C on Thu night). Wind will be generally light.

Days 4–6 Weather Summary

A dusting of snow. Milder later with heavy rain (total 41mm) on Mon morning. Icy conditions (max 11°C on Mon night, min -4°C on Sun morning). Winds increasing (calm on Sun morning, fresh winds from the S by Mon night).

Days 7–9 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 3°C on Tue afternoon, min -6°C on Wed morning). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 10°C on Sat afternoon, min -1°C on Fri morning). Wind will be generally light.

Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thu
26
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
High Tide
5:13AM2.53m
6:01PM2.19m
6:12AM2.48m
7:04PM2.15m
7:14AM2.49m
8:05PM2.20m
8:14AM2.55m
8:59PM2.30m
9:07AM2.66m
9:45PM2.45m
9:54AM2.79m
10:25PM2.63m
10:37AM2.91m
11:03PM2.81m
11:19AM3.01m
11:40PM2.98m
12:00PM3.08m
00:18AM3.13m
12:43PM3.09m
00:59AM3.22m
1:28PM3.05m
1:42AM3.26m
2:16PM2.95m
2:30AM3.24m
3:09PM2.82m
3:22AM3.15m
4:08PM2.67m
4:22AM3.03m
5:15PM2.54m
Low Tide
11:47AM0.46m
11:53PM0.68m
12:50PM0.50m
00:54AM0.70m
1:52PM0.48m
1:56AM0.65m
2:47PM0.39m
2:51AM0.53m
3:34PM0.27m
3:40AM0.37m
4:14PM0.14m
4:24AM0.19m
4:53PM0.01m
5:06AM0.01m
5:30PM-0.09m
5:48AM-0.16m
6:08PM-0.16m
6:31AM-0.28m
6:48PM-0.18m
7:16AM-0.35m
7:31PM-0.14m
8:04AM-0.34m
8:17PM-0.06m
8:55AM-0.27m
9:08PM0.07m
9:53AM-0.15m
10:05PM0.21m
10:57AM-0.02m
Wave
height (m) 
direction
period (s) 
1.1
E
5
1.1
E
6
1.4
SE
6
1.6
SSE
7
1.1
SSE
8
0.9
SSE
8
0.8
SSE
9
1.2
SSE
9
2.1
S
7
1.8
SSE
8
1.4
SSE
8
0.7
SSE
10
0.3
SSE
8
0.3
SSE
8
1.3
SSE
5
3.5
SSE
9
4
SSE
9
3.5
SSE
10
2.1
SSE
10
1.9
SSE
11
1.6
SE
10
1.4
SE
10
1.1
SE
10
1.1
SE
10
0.9
SE
9
1
SE
9
0.8
SE
9
0.9
SE
8
1.1
SE
8
1.6
S
6
1.9
S
7
1.4
S
7
0.7
SE
9
0.5
SE
9
0.7
SE
9
0.4
SE
8
0.6
SSE
3
0.8
SSE
4
0.9
SSE
5
0.7
SSE
5
1.2
S
5
2.3
SSE
7
2.3
SSE
8
1.7
SSE
8
1.7
SSE
9
1.2
SSE
9
1
SSE
9
cloud
cloud
cloud
cloud
light rain
snow showers
clear
cloud
light snow
cloud
clear
part cloud
cloud
cloud
light snow
heavy rain
heavy rain
rain showers
part cloud
part cloud
clear
part cloud
cloud
part cloud
light snow
cloud
clear
part cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
cloud
cloud
part cloud
part cloud
clear
clear
part cloud
light rain
part cloud
clear
part cloud
cloud
cloudy
cloudy
cloudy
cloudy
light rain
snow shwrs
clear
cloudy
light snow
cloudy
clear
some clouds
cloudy
cloudy
light snow
heavy rain
heavy rain
rain shwrs
some clouds
some clouds
clear
some clouds
cloudy
some clouds
light snow
cloudy
clear
some clouds
cloudy
some clouds
cloudy
some clouds
clear
clear
clear
cloudy
cloudy
some clouds
some clouds
clear
clear
some clouds
light rain
some clouds
clear
some clouds
cloudy
 km/h
15
ENE
10
ENE
10
S
20
WSW
5
NNE
10
WNW
10
SW
20
S
20
SSW
30
WSW
30
W
20
WNW
0
SSW
15
SSE
20
SE
30
S
35
S
30
WSW
20
W
25
W
20
W
20
WNW
15
WNW
15
ENE
10
S
15
SSE
5
SSW
15
SSW
20
S
20
SW
25
SW
15
WNW
5
WNW
15
NNW
15
NNW
10
E
15
SSE
10
SSE
5
SW
15
SSW
20
S
25
S
20
WSW
30
W
25
W
30
W
20
W
 mm 
2
2
4
19
11
7
5
max°C
2
2
9
14
4
0
0
3
3
2
4
0
-2
0
2
8
10
11
-1
3
-1
-3
-1
-2
-1
0
0
2
3
2
5
10
5
3
6
3
0
6
9
18
20
14
8
8
1
-1
1
Moonrise
2:40
3:32
4:17
4:53
5:23
5:48
6:10
6:30
6:50
7:12
7:37
8:07
8:45
9:35
10:37
11:48
Moonset
10:49
11:43
12:45
1:52
3:03
4:14
5:27
6:41
7:56
9:14
10:34
11:55
1:13
2:21
3:16
Sunrise
7:01
6:58
6:56
6:54
6:52
6:52
6:50
6:48
6:46
6:43
6:43
6:41
6:39
6:37
6:35
6:33
Sunset
6:40
6:42
6:44
6:45
6:45
6:46
6:47
6:50
6:51
6:52
6:52
6:54
6:55
6:57
6:58
6:59
Today's sea temperature in Great Diamond Island is
2.1° C
(Statistics for 11 Mar 1981-2005 – mean: 2.8 max: 4.1 min: 1.4°C)
Issued (local time): 7 am Wednesday 11 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest