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 07:07 PM.

Days 1–4 Weather Summary

Light rain (total 4mm) at first, then becoming colder with a dusting of snow on Thu morning. Icy conditions (max 20°C on Wed morning, min -1°C on Thu morning). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 7mm), mostly falling on Sun afternoon. Icy conditions (max 17°C on Fri night, min 0°C on Sat night). Winds increasing (light winds from the SSE on Sun morning, fresh winds from the WNW by Mon morning).

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 6°C on Mon night, min -2°C on Wed morning). Winds increasing (light winds from the N on Tue morning, strong winds from the NE by Wed morning).

Days 11–13 Weather Summary

Light rain (total 3mm), mostly falling on Sun afternoon. Freeze-thaw conditions (max 16°C on Sat afternoon, min -2°C on Fri morning). Wind will be generally light.

Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thu
16
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
AM
Wave Height Map
High Tide
11:32PM2.80m
11:55AM2.77m
00:14AM2.84m
12:38PM2.72m
00:53AM2.86m
1:19PM2.66m
1:31AM2.85m
1:58PM2.60m
2:09AM2.83m
2:38PM2.53m
2:49AM2.79m
3:20PM2.46m
3:32AM2.73m
4:04PM2.38m
4:18AM2.67m
4:53PM2.31m
5:09AM2.61m
5:45PM2.26m
6:02AM2.56m
6:40PM2.25m
6:59AM2.55m
7:36PM2.28m
7:55AM2.56m
8:30PM2.37m
8:50AM2.60m
9:21PM2.51m
9:42AM2.66m
Low Tide
5:24PM0.04m
5:48AM0.02m
6:07PM0.08m
6:32AM-0.01m
6:47PM0.13m
7:14AM-0.01m
7:27PM0.20m
7:55AM0.02m
8:05PM0.27m
8:35AM0.06m
8:45PM0.34m
9:17AM0.13m
9:26PM0.41m
10:02AM0.20m
10:11PM0.48m
10:50AM0.28m
11:00PM0.54m
11:43AM0.35m
11:54PM0.58m
12:38PM0.38m
00:51AM0.58m
1:33PM0.38m
1:48AM0.54m
2:26PM0.35m
2:44AM0.45m
3:16PM0.29m
3:37AM0.32m
4:03PM0.22m
Wave
height (m) 
direction
period (s) 
0.6
ENE
5
0.6
SE
5
0.7
NE
4
0.9
ENE
5
1.3
E
6
1.2
ENE
6
1
E
6
1
E
7
0.9
E
7
0.8
E
7
0.5
E
7
1.1
ENE
5
1
ENE
6
1.2
E
6
1.1
ESE
7
0.6
ESE
7
0.9
NW
4
0.7
NW
4
0.4
NE
4
0.4
SE
9
0.5
E
3
0.8
ENE
4
2.1
ENE
7
1.8
E
8
1.6
E
8
1.7
E
10
1.6
E
11
1.3
E
10
1.1
E
10
1.2
E
10
1.1
E
10
0.8
E
9
0.7
E
9
0.8
E
9
0.9
ESE
8
0.9
ESE
8
0.7
E
8
0.6
E
8
0.7
E
8
0.9
E
6
0.9
ESE
8
1.3
ESE
5
1.4
E
7
1.2
E
8
0.9
ESE
8
0.6
E
8
0.5
E
8
light rain
cloud
light rain
cloud
light snow
cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
light rain
light rain
rain showers
part cloud
clear
part cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
light rain
mod rain
rain showers
part cloud
part cloud
light rain
mod rain
heavy rain
rain showers
cloud
cloud
cloud
light rain
cloudy
light rain
cloudy
light snow
cloudy
cloudy
cloudy
some clouds
clear
some clouds
some clouds
some clouds
light rain
light rain
rain shwrs
some clouds
clear
some clouds
clear
some clouds
some clouds
cloudy
cloudy
some clouds
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
cloudy
cloudy
light rain
mod rain
rain shwrs
some clouds
some clouds
light rain
mod rain
heavy rain
rain shwrs
cloudy
cloudy
cloudy
 km/h
5
S
15
WSW
15
NE
20
ENE
25
ENE
20
ENE
15
ESE
15
S
20
SSW
20
WSW
15
ENE
25
E
15
SE
25
SSW
20
SSW
25
W
35
WNW
25
NW
15
NW
10
N
25
ESE
30
ENE
35
NE
20
ENE
15
N
20
NE
10
ESE
10
SSW
20
S
25
SSE
25
SSW
15
SW
5
NW
20
NNE
20
NE
15
ENE
5
SW
15
N
15
E
20
ENE
20
SE
30
SE
25
NE
10
N
10
NW
5
E
10
S
 mm 
2
2
1
5
1
2
6
1
1
8
17
1
max°C
14
20
10
4
0
0
1
2
18
17
8
2
3
12
14
11
4
8
6
3
2
2
0
0
1
0
0
-1
1
3
4
6
16
13
4
2
4
7
8
6
3
2
4
5
7
6
6
Moonrise
7:02
8:08
9:14
10:20
11:25
12:26
1:21
2:09
2:48
3:21
3:48
4:12
4:33
4:54
5:16
Moonset
6:00
6:20
6:41
7:05
7:33
8:07
8:49
9:40
10:38
11:41
12:49
1:58
3:08
4:19
5:33
Sunrise
6:26
6:24
6:22
6:20
6:18
6:16
6:15
6:13
6:11
6:09
6:09
6:07
6:05
6:03
6:01
6:00
Sunset
7:07
7:07
7:08
7:09
7:12
7:13
7:14
7:15
7:15
7:16
7:17
7:20
7:21
7:22
7:22
7:23
Today's sea temperature in Plum Island Sound (south end) is
4.1° C
(Statistics for 31 Mar 1981-2005 – mean: 4.1 max: 5.7 min: 2.8°C)
Issued (local time): 7 pm Tuesday 31 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest