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 05:24 AM and sunset is at 09:13 PM.

Days 1–3 Weather Summary

Mostly dry. Warm air temperatures (max 22°C on Sun afternoon, min 9°C on Tue night). Winds decreasing (fresh winds from the SW on Sun afternoon, calm by Tue night).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 13°C on Wed afternoon, min 11°C on Wed morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Very mild (max 18°C on Sat afternoon, min 12°C on Mon morning). Winds decreasing (fresh winds from the SW on Sat afternoon, calm by Mon morning).

Days 10–12 Weather Summary

Mostly dry. Warm (max 20°C on Tue afternoon, min 12°C on Wed night). Winds decreasing (fresh winds from the SW on Tue morning, light winds from the SSE by Thu night).

Days 13–16 Weather Summary

Moderate rain (total 12mm), heaviest on Sat morning. Very mild (max 16°C on Mon morning, min 9°C on Sat night). Winds decreasing (strong winds from the SW on Sat afternoon, calm by Sun morning).

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
6:43AM0.68m
7:16PM1.07m
7:29AM0.72m
7:47PM1.12m
8:08AM0.75m
8:16PM1.17m
8:44AM0.80m
8:43PM1.20m
9:18AM0.84m
9:11PM1.21m
9:51AM0.89m
9:41PM1.21m
10:25AM0.94m
10:13PM1.19m
11:00AM0.97m
10:49PM1.14m
11:37AM0.99m
11:29PM1.07m
12:20PM0.99m
00:15AM0.98m
1:11PM0.98m
1:09AM0.89m
2:22PM0.97m
2:21AM0.79m
3:58PM0.99m
4:04AM0.73m
5:20PM1.07m
5:35AM0.74m
6:19PM1.17m
Low Tide
12:12PM0.38m
2:02AM0.33m
12:57PM0.31m
2:32AM0.26m
1:36PM0.25m
3:01AM0.20m
2:13PM0.20m
3:27AM0.16m
2:49PM0.18m
3:52AM0.14m
3:24PM0.18m
4:17AM0.14m
3:58PM0.20m
4:42AM0.16m
4:33PM0.25m
5:08AM0.20m
5:10PM0.32m
5:36AM0.26m
5:51PM0.41m
6:07AM0.32m
6:42PM0.51m
6:45AM0.39m
9:13PM0.59m
7:36AM0.44m
11:27PM0.51m
9:14AM0.47m
00:27AM0.40m
11:33AM0.41m
Wave
Height (m)
Direction
Period (s)
0.6
SSW
4
0.8
SW
4
0.5
SW
3
0.3
E
9
0.3
ESE
9
0.3
ESE
7
0.3
ESE
8
0.4
SE
8
0.2
ESE
8
0.2
ESE
7
0.4
SE
7
0.3
ESE
6
0.5
SE
7
0.5
ESE
7
0.5
ESE
7
0.5
E
7
0.5
E
7
0.5
E
7
0.7
E
6
1
SW
4
0.9
SW
4
0.5
E
8
0.4
E
8
0.4
E
8
0.5
E
7
0.4
E
9
0.5
E
8
0.6
SSW
4
0.8
SW
4
0.4
ENE
8
0.4
ENE
7
0.7
SE
4
0.6
SE
5
0.5
SE
5
0.6
SE
6
0.6
SE
7
0.6
SE
7
0.6
SE
8
0.6
SE
8
0.8
SE
8
0.9
SE
8
1
SE
8
0.6
SE
8
0.6
ESE
8
0.6
ESE
8
0.6
SE
8
0.7
SE
8
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
light rain
part cloud
part cloud
light rain
part cloud
part cloud
cloud
light rain
clear
some clouds
clear
some clouds
clear
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
clear
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
light rain
light rain
some clouds
some clouds
light rain
some clouds
some clouds
cloudy
light rain
km/h
20
SW
30
SW
20
SW
15
SSW
15
SSE
10
S
10
SE
15
SE
5
SE
5
SE
15
ESE
5
S
10
SSE
15
SE
5
SSE
5
SSE
10
SE
15
SSW
30
SW
40
SW
35
SW
10
WSW
10
E
20
SSW
10
WSW
10
SSW
15
SW
25
SW
30
SW
15
SSW
15
S
25
SSE
10
SSE
10
SSE
20
SE
5
SSE
10
SSE
10
SE
10
SSE
15
SW
35
SW
30
SW
10
NE
10
S
15
SW
20
SW
20
SSW
 mm
1
3
4
3
max °C
20
22
20
19
19
15
13
13
11
12
13
11
13
13
11
13
13
13
16
18
17
17
14
15
15
14
15
18
20
17
17
17
14
15
16
14
14
14
14
15
15
13
9
11
13
16
13
Moonrise
8:03
8:39
9:05
9:24
9:39
9:51
10:02
10:13
10:25
10:39
10:57
11:23
12:02
1:00
2:18
Moonset
1:43
2:41
3:50
5:05
6:21
7:38
8:54
10:10
11:28
12:49
2:14
3:42
5:08
6:24
7:21
8:01
Sunrise
5:24
5:26
5:28
5:30
5:31
5:33
5:33
5:35
5:37
5:39
5:39
5:41
5:43
5:45
5:47
5:48
Sunset
9:13
9:10
9:09
9:07
9:07
9:05
9:02
9:01
9:00
8:58
8:57
8:54
8:52
8:51
8:49
8:46
Today's sea temperature in Castle Island is
5.9° C
(Statistics for 26 Jul 1981-2005 – mean: 10.0 max: 11.8 min: 6.2°C)
Issued (local time): 2 am Sunday 26 Jul 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest