Castle Island Sea Conditions and Tide Table

Castle 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 — and sunset is at 05:27 PM.

Days 1–4 Weather Summary

A light covering of new snow, mostly falling on Mon night. Icy conditions (max 2°C on Tue morning, min -4°C on Sun morning). Mainly strong winds.

Days 5–7 Weather Summary

A dusting of new snow. Icy conditions (max 1°C on Tue night, min -13°C on Thu morning). Winds decreasing (near gales from the NNW on Tue night, light winds from the NW by Thu night).

Days 8–10 Weather Summary

Mostly dry. Temperatures will be well below freezing (max -7°C on Sun afternoon, min -18°C on Sat night). Wind will be generally light.

Days 11–13 Weather Summary

A dusting of snow turning to light rain (total 6mm) on Wed morning. Freeze-thaw conditions (max 3°C on Wed morning, min -16°C on Thu night). Winds increasing (calm on Mon night, strong winds from the SW by Wed night).

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thu
27
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
9:34PM0.99m
9:32AM1.08m
9:59PM0.99m
9:57AM1.01m
10:24PM0.99m
10:24AM0.94m
10:53PM0.96m
10:53AM0.86m
11:29PM0.93m
11:31AM0.77m
00:24AM0.88m
8:00AM0.66m
12:29PM0.68m
2:52AM0.87m
3:21PM0.62m
4:39AM0.95m
5:04PM0.66m
5:26AM1.05m
5:55PM0.74m
6:01AM1.14m
6:34PM0.83m
6:34AM1.23m
7:10PM0.92m
7:08AM1.29m
Low Tide
3:12AM0.19m
3:38PM0.16m
3:42AM0.26m
4:01PM0.21m
4:12AM0.34m
4:26PM0.27m
4:44AM0.44m
4:53PM0.34m
5:21AM0.55m
5:24PM0.41m
6:29AM0.66m
6:04PM0.48m
11:13AM0.55m
7:31PM0.53m
11:55AM0.44m
10:38PM0.47m
12:27PM0.33m
11:30PM0.37m
12:55PM0.23m
00:12AM0.26m
1:22PM0.13m
00:51AM0.16m
1:49PM0.06m
Wave
height (m) 
direction
period (s) 
0.4
NNW
3
0.6
NW
3
0.5
NW
3
0.2
NNW
2
0.2
NNE
2
0.3
NE
2
0.4
NE
2
0.3
NNE
2
0.5
N
3
0.5
N
3
0.4
NNW
3
0.1
NW
2
0.1
W
2
0.1
W
2
0.1
SW
2
0
W
2
0.1
N
1
0.1
N
2
0.1
W
1
0
W
1
0.1
W
1
0.1
W
1
0.1
W
1
0.2
WSW
2
0.1
W
2
0
W
1
0.1
SW
2
0
W
2
0.1
S
1
0.3
SW
2
0.3
SSW
2
0.4
S
3
0.3
SSW
3
0.3
SW
3
0.2
NNW
2
0.1
NW
2
part cloud
part cloud
part cloud
cloud
cloud
cloud
light snow
light snow
light snow
light snow
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
cloud
clear
clear
cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
light snow
light rain
cloud
cloud
part cloud
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
light snow
light snow
light snow
light snow
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
clear
clear
some clouds
cloudy
clear
clear
cloudy
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
light snow
light rain
cloudy
cloudy
some clouds
 km/h
40
NW
50
NW
40
NNW
25
N
30
NE
40
NE
40
NE
40
NNE
50
N
40
NNW
40
NNW
15
NW
15
W
15
WSW
15
WSW
10
NW
20
N
10
NNW
15
WNW
15
WNW
15
WNW
15
W
20
W
25
WSW
20
WNW
15
WSW
10
SSW
5
SW
25
SSW
30
SSW
30
S
40
S
30
SW
25
WSW
25
NNW
10
NW
 mm 
3
3
max°C
1
-2
0
-1
1
1
1
2
1
1
-3
-2
-8
-8
-5
-9
-10
-8
-13
-11
-8
-10
-11
-7
-9
-10
-8
-5
-1
0
1
3
3
1
-10
-10
Moonrise
9:08
10:19
11:31
12:45
2:00
3:14
4:22
5:20
6:02
6:33
6:54
7:10
Moonset
8:28
8:37
8:47
8:58
9:13
9:32
10:01
10:43
11:42
12:57
2:23
3:53
5:24
Sunrise
7:26
7:24
7:22
7:20
7:18
7:16
7:13
7:11
7:09
7:07
7:05
7:03
Sunset
5:27
5:29
5:30
5:32
5:35
5:36
5:37
5:39
5:42
5:44
5:45
5:46
5:49
Today's sea temperature in Castle Island is -1.8 °C (Statistics for 15 Feb 1981-2005 – mean: -0.9 max: 0.0 min: -1.9°C)
Issued (local time): 7 pm Saturday 15 Feb 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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