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 06:54 PM.

Days 1–4 Weather Summary

Mostly dry. Warm air temperatures (max 25°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light.

Days 5–7 Weather Summary

Heavy rain (total 32mm), heaviest during Sun morning. Warm air temperatures (max 23°C on Fri morning, min 13°C on Sat morning). Winds increasing (calm on Thu afternoon, fresh winds from the SSE by Sat night).

Days 8–10 Weather Summary

Light rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 16°C on Mon afternoon, min 11°C on Wed morning). Winds decreasing (fresh winds from the N on Sun afternoon, calm by Mon morning).

Days 11–13 Weather Summary

Light rain (total 9mm), mostly falling on Sat morning. Very mild (max 18°C on Fri night, min 12°C on Wed afternoon). Mainly fresh winds.

Days 14–17 Weather Summary

Light rain (total 4mm), mostly falling on Sat afternoon. Very mild (max 16°C on Sat afternoon, min 12°C on Mon morning). Mainly fresh winds.

Mon
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
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
night
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
2:23PM2.95m
2:50AM2.69m
3:06PM2.89m
3:35AM2.58m
3:51PM2.80m
4:22AM2.46m
4:38PM2.71m
5:12AM2.35m
5:30PM2.63m
6:06AM2.27m
6:25PM2.58m
7:03AM2.23m
7:22PM2.55m
8:00AM2.23m
8:19PM2.57m
8:54AM2.29m
9:12PM2.61m
9:43AM2.39m
10:01PM2.66m
10:28AM2.51m
10:46PM2.72m
11:10AM2.65m
11:30PM2.77m
11:50AM2.79m
00:13AM2.81m
12:30PM2.93m
00:56AM2.83m
1:12PM3.04m
Low Tide
8:46PM-0.01m
9:00AM0.21m
9:32PM0.07m
9:44AM0.32m
10:19PM0.17m
10:31AM0.42m
11:10PM0.27m
11:21AM0.52m
00:04AM0.36m
12:16PM0.58m
1:01AM0.41m
1:13PM0.60m
1:57AM0.42m
2:09PM0.58m
2:51AM0.39m
3:03PM0.52m
3:41AM0.34m
3:54PM0.43m
4:26AM0.27m
4:41PM0.31m
5:08AM0.21m
5:25PM0.19m
5:47AM0.16m
6:08PM0.07m
6:26AM0.12m
6:52PM-0.04m
7:06AM0.10m
7:36PM-0.13m
Wave
Height (m)
Direction
Period (s)
0.6
NE
5
0.9
NE
5
0.6
NE
4
0.5
E
6
0.4
ENE
5
0.4
SE
4
0.4
SSE
3
0.4
ESE
7
0.5
E
7
0.4
E
7
0.4
E
7
0.4
ESE
6
0.3
ESE
8
0.8
NE
4
0.6
ENE
5
0.6
E
6
1
SSE
4
1
SE
6
1.3
NE
5
1
ENE
6
0.7
ENE
6
0.6
ENE
6
0.4
E
6
0.4
ESE
8
0.5
NE
4
0.4
ESE
8
0.8
ENE
4
0.9
ENE
5
0.8
E
6
0.8
E
5
0.6
E
5
0.7
E
7
0.9
ESE
5
1.1
ESE
6
1.3
ESE
6
1.6
ESE
7
1.9
ESE
7
1.8
ESE
8
1.9
ESE
9
1.9
ESE
10
2
ESE
11
2.3
ESE
11
2.4
ESE
11
2.1
ESE
11
2.3
ESE
11
2.2
ESE
12
1.9
ESE
12
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
light rain
clear
clear
clear
clear
part cloud
mod rain
heavy rain
light rain
part cloud
clear
clear
part cloud
cloud
rain showers
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
light rain
clear
clear
clear
clear
some clouds
mod rain
heavy rain
light rain
some clouds
clear
clear
some clouds
cloudy
rain shwrs
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
light rain
light rain
light rain
light rain
cloudy
cloudy
some clouds
clear
clear
clear
clear
clear
clear
km/h
25
NNW
20
NNE
15
NE
15
SE
10
SW
15
SSW
15
S
10
W
10
NNE
5
NNE
15
SW
15
N
10
E
20
NE
10
ENE
20
SE
30
SSE
25
NNW
25
NNE
10
N
5
NNE
15
SE
5
NW
15
N
15
NNE
15
NNE
25
ENE
20
ENE
15
ENE
15
ESE
20
SSE
15
SSE
20
SE
25
ESE
25
SE
30
ESE
30
E
30
NE
35
NE
25
NE
25
NE
30
NE
25
NE
20
NNE
25
NE
20
NE
15
NNE
 mm
3
8
21
1
1
3
4
5
1
max °C
21
18
13
14
14
18
25
24
18
19
19
23
23
20
14
16
17
19
14
14
15
16
16
14
13
13
13
12
13
13
13
14
16
17
18
17
17
16
14
14
14
13
13
14
13
13
13
Moonrise
11:24
12:30
1:32
2:27
3:14
3:54
4:27
4:53
5:17
5:38
5:59
6:20
6:42
7:09
7:41
Moonset
8:12
8:41
9:15
9:58
10:48
11:45
12:48
1:54
3:01
4:08
5:16
6:26
7:38
8:52
10:09
Sunrise
6:22
6:22
6:24
6:24
6:26
6:26
6:28
6:28
6:30
6:31
6:33
6:33
6:35
6:35
6:37
Sunset
6:54
6:52
6:52
6:50
6:47
6:45
6:44
6:43
6:40
6:38
6:37
6:36
6:34
6:31
6:30
6:28
Today's sea temperature in Plum Island Sound (south end) is
18.0°C
(Statistics for 14 Sep 1981-2005 – mean: 17.6 max: 19.9 min: 15.5°C)
Issued (local time): 1 pm Monday 14 Sep 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest