Plum Island Sound (south end) Sea Conditions and Tide Table

Plum Island Sound (south end) 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 07:38 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Tue night. Warm air temperatures (max 23°C on Tue afternoon, min 8°C on Wed night). Winds decreasing (fresh winds from the W on Tue night, calm by Thu morning).

Days 5–7 Weather Summary

Moderate rain (total 13mm), heaviest on Sat afternoon. Cool air temperatures (max 19°C on Fri afternoon, min 6°C on Sat night). Winds increasing (light winds from the W on Sat night, fresh winds from the WNW by Sun afternoon).

Days 8–10 Weather Summary

Some drizzle, heaviest during Wed afternoon. Warm (max 26°C on Tue afternoon, min 8°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Light rain (total 3mm), mostly falling on Wed night. Warm (max 22°C on Fri morning, min 9°C on Fri night). Wind will be generally light.

Tuesday
29
Wednesday
30
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tuesday
6
Wednesday
7
Thursday
8
Friday
9
Sat
10
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
00:53AM3.40m
1:29PM2.91m
1:44AM3.39m
2:21PM2.85m
2:36AM3.32m
3:15PM2.76m
3:31AM3.20m
4:10PM2.67m
4:28AM3.05m
5:08PM2.59m
5:27AM2.90m
6:08PM2.54m
6:28AM2.77m
7:09PM2.52m
7:30AM2.66m
8:07PM2.55m
8:29AM2.59m
9:00PM2.59m
9:24AM2.54m
9:48PM2.64m
10:13AM2.51m
10:31PM2.69m
10:58AM2.48m
Low Tide
6:44PM-0.08m
7:23AM-0.43m
7:34PM-0.05m
8:15AM-0.40m
8:25PM0.01m
9:09AM-0.31m
9:20PM0.09m
10:04AM-0.18m
10:17PM0.19m
11:01AM-0.05m
11:17PM0.28m
12:00PM0.07m
00:18AM0.35m
12:58PM0.17m
1:21AM0.37m
1:55PM0.23m
2:21AM0.37m
2:49PM0.28m
3:17AM0.33m
3:38PM0.32m
4:08AM0.28m
4:23PM0.36m
4:54AM0.23m
Wave
height (m) 
direction
period (s) 
0.4
ESE
10
0.5
ESE
9
0.7
SE
6
0.8
SE
6
0.9
NW
4
0.5
E
9
0.4
ESE
9
0.3
ESE
9
0.6
SSE
3
0.5
SE
5
0.5
SE
4
0.7
SE
5
0.6
SE
6
0.4
SE
6
0.4
SE
6
0.4
NW
2
0.5
NE
4
0.4
SSW
4
0.3
ESE
8
0.4
NNW
3
0.3
ESE
9
0.5
SE
4
0.4
SW
3
0.3
ESE
10
0.3
ENE
3
0.2
ESE
9
0.3
SE
4
0.2
ESE
8
0.2
ESE
8
0.5
NE
4
0.3
ESE
8
0.2
ESE
8
0.5
ENE
4
0.3
E
9
0.4
NW
3
0.3
E
9
clear
clear
clear
rain showers
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
rain showers
part cloud
mod rain
rain showers
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
cloud
clear
clear
clear
light rain
rain showers
clear
clear
clear
clear
clear
rain shwrs
clear
clear
clear
some clouds
clear
some clouds
cloudy
some clouds
rain shwrs
some clouds
mod rain
rain shwrs
clear
clear
some clouds
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
rain shwrs
rain shwrs
cloudy
clear
clear
clear
light rain
rain shwrs
clear
clear
 km/h
10
W
20
SW
25
SSW
25
SW
35
NW
20
NW
10
NW
10
SSE
20
SSE
15
S
20
S
25
SSE
15
W
15
WNW
10
NNW
20
WNW
15
WNW
30
WNW
15
WSW
20
NW
5
S
20
WSW
20
WNW
15
WNW
0
E
5
ESE
5
SW
15
WNW
15
ENE
15
SE
10
SW
10
WSW
15
ENE
5
WNW
20
NW
15
N
 mm 
1
1
7
5
1
1
1
1
max°C
20
20
23
18
12
16
13
11
14
13
13
19
19
16
13
11
12
16
12
11
16
16
22
26
20
17
21
21
17
15
13
22
11
12
16
19
Moonrise
5:49
6:27
7:17
8:18
9:27
10:40
11:52
1:00
2:06
3:09
4:10
5:12
6:15
Moonset
9:21
10:43
11:55
12:54
1:38
2:12
2:38
2:59
3:18
3:36
3:53
4:11
Sunrise
5:41
5:39
5:37
5:35
5:35
5:33
5:31
5:31
5:30
5:28
5:26
5:26
Sunset
7:38
7:39
7:40
7:43
7:44
7:45
7:45
7:46
7:47
7:49
7:50
7:51
7:52
Today's sea temperature in Plum Island Sound (south end) is 8.0 °C (Statistics for 28 Apr 1981-2005 – mean: 6.7 max: 8.4 min: 5.1°C)
Issued (local time): 7 pm Monday 28 Apr 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest