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 07:59 PM.

Days 1–4 Weather Summary

Mostly dry. Warm air temperatures (max 28°C on Tue morning, min 13°C on Mon morning). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 9mm), mostly falling on Wed night. Very warm air temperatures (max 33°C on Tue afternoon, min 10°C on Thu morning). Wind will be generally light.

Days 8–10 Weather Summary

Heavy rain (total 22mm), heaviest during Sun morning. Very mild (max 16°C on Fri afternoon, min 7°C on Sun afternoon). Winds increasing (light winds from the SSW on Sat morning, fresh winds from the ENE by Sun morning).

Days 11–13 Weather Summary

Heavy rain (total 20mm), heaviest during Tue night. Warm (max 22°C on Wed afternoon, min 8°C on Mon night). Wind will be generally light.

Days 14–17 Weather Summary

Mostly dry. Warm (max 24°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light.

Sat
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
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
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High Tide
11:44AM2.78m
11:58PM3.30m
12:35PM2.81m
00:49AM3.37m
1:27PM2.82m
1:41AM3.38m
2:20PM2.80m
2:35AM3.33m
3:14PM2.78m
3:31AM3.23m
4:11PM2.75m
4:29AM3.10m
5:10PM2.73m
5:30AM2.96m
6:10PM2.73m
6:31AM2.82m
7:09PM2.75m
7:33AM2.70m
8:06PM2.78m
8:32AM2.61m
8:59PM2.81m
9:28AM2.54m
9:48PM2.82m
10:20AM2.49m
10:33PM2.83m
11:06AM2.45m
11:14PM2.82m
11:48AM2.42m
Low Tide
5:48PM0.08m
6:30AM-0.32m
6:38PM0.04m
7:22AM-0.36m
7:30PM0.03m
8:14AM-0.35m
8:24PM0.04m
9:09AM-0.30m
9:20PM0.08m
10:04AM-0.21m
10:19PM0.13m
11:01AM-0.12m
11:21PM0.18m
11:59AM-0.02m
00:24AM0.21m
12:56PM0.07m
1:26AM0.22m
1:52PM0.15m
2:27AM0.20m
2:45PM0.23m
3:23AM0.18m
3:36PM0.30m
4:14AM0.15m
4:23PM0.36m
5:01AM0.14m
5:07PM0.41m
5:44AM0.14m
5:48PM0.45m
Wave
Height (m)
Direction
Period (s)
0.8
E
9
0.8
ESE
9
0.5
ESE
8
0.4
ESE
8
0.3
ESE
8
0.4
SE
8
0.4
SE
8
0.4
SE
4
0.4
SE
9
0.4
SE
9
0.4
SSE
6
0.4
SSE
5
0.5
SW
3
0.4
SE
9
0.4
SE
9
0.4
NE
5
0.4
SE
9
0.2
ESE
14
0.4
S
3
0.3
SE
5
0.2
ESE
10
0.2
ESE
4
1.2
ESE
5
1.8
ESE
7
1.7
ESE
8
1.6
ESE
8
1.2
ESE
8
1.1
ESE
8
1.1
E
9
1.1
E
9
1
E
9
1.1
E
9
1
ESE
9
1.1
E
9
1.2
ESE
9
1.1
ESE
9
1
ESE
9
0.8
ESE
9
0.7
ESE
9
0.6
ESE
8
0.5
ESE
8
0.4
ESE
8
0.4
ESE
8
0.3
ESE
8
0.3
ESE
8
0.4
ESE
7
0.4
E
10
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
light rain
rain showers
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
light rain
heavy rain
mod rain
light rain
cloud
cloud
part cloud
cloud
cloud
light rain
heavy rain
cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
some clouds
clear
some clouds
clear
some clouds
some clouds
clear
clear
clear
clear
clear
light rain
rain shwrs
some clouds
some clouds
some clouds
clear
some clouds
some clouds
cloudy
light rain
heavy rain
mod rain
light rain
cloudy
cloudy
some clouds
cloudy
cloudy
light rain
heavy rain
cloudy
some clouds
some clouds
some clouds
cloudy
some clouds
clear
some clouds
clear
clear
clear
clear
clear
clear
some clouds
km/h
15
SW
20
SW
15
W
15
W
10
ENE
15
E
15
SE
10
SSW
15
WSW
20
WSW
20
SW
20
WSW
25
WNW
20
NW
10
NNE
0
S
10
NNW
10
S
25
S
10
SW
15
SSE
15
E
30
E
25
ENE
25
NE
20
ENE
15
ENE
15
ENE
10
ESE
20
ESE
15
ESE
0
E
10
SW
10
SSW
15
W
10
W
10
WNW
15
W
5
NW
5
NW
10
NNW
10
E
15
SSE
10
SW
10
SSE
20
SSE
10
SW
1
8
2
11
7
2
1
19
max °C
25
21
24
27
24
14
15
17
28
33
30
31
32
22
12
16
16
15
16
15
13
12
8
8
7
8
8
9
9
10
11
12
16
22
21
17
18
15
20
24
23
18
19
20
21
23
22
Moonrise
5:23
6:18
7:27
8:44
10:03
11:19
12:31
1:39
2:45
3:50
4:55
6:00
7:05
8:08
9:07
Moonset
8:24
9:45
10:55
11:50
12:33
1:05
1:31
1:52
2:12
2:31
2:51
3:13
3:38
4:08
4:45
Sunrise
5:18
5:18
5:16
5:16
5:15
5:13
5:13
5:13
5:11
5:11
5:09
5:09
5:09
5:09
5:07
Sunset
7:59
8:00
8:00
8:01
8:02
8:04
8:05
8:06
8:07
8:07
8:08
8:09
8:09
8:10
8:12
8:13
Today's sea temperature in Plum Island Sound (south end) is
9.7° C
(Statistics for 16 May 1981-2005 – mean: 9.3 max: 11.4 min: 7.6°C)
Issued (local time): 1 pm Saturday 16 May 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest