Port Jefferson Sea Conditions and Tide Table

Port Jefferson 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 07:56 AM and sunset is at 04:21 PM.

Days 1–3 Weather Summary

Moderate rain (total 11mm), heaviest on Wed morning. Cool air temperatures (max 10°C on Wed afternoon, min 4°C on Tue night). Mainly fresh winds.

Days 4–6 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Low air temperatures (max 6°C on Fri morning, min 1°C on Sun night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Mild temperatures (max 8°C on Wed afternoon, min 2°C on Mon morning). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 25mm), heaviest during Thu night. Very mild (max 10°C on Thu night, min 4°C on Fri afternoon). Winds increasing (light winds from the SSW on Thu morning, fresh winds from the S by Sat night).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
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
High Tide
7:57AM3.65m
5:40PM2.73m
8:27AM3.66m
6:36PM2.58m
8:58AM3.66m
7:45PM2.41m
9:29AM3.63m
9:07PM2.28m
10:02AM3.60m
10:41PM2.28m
10:36AM3.56m
00:22AM2.44m
11:12AM3.52m
1:56AM2.76m
11:53AM3.49m
3:11AM3.11m
12:38PM3.47m
4:11AM3.42m
1:25PM3.41m
5:00AM3.64m
2:20PM3.39m
5:44AM3.78m
3:15PM3.34m
6:25AM3.85m
Low Tide
1:31PM2.23m
00:54AM-0.21m
2:19PM2.04m
1:34AM0.05m
3:11PM1.76m
2:16AM0.41m
4:04PM1.41m
3:03AM0.85m
4:57PM0.99m
3:57AM1.34m
5:49PM0.53m
5:02AM1.82m
6:40PM0.07m
6:16AM2.21m
7:31PM-0.35m
7:33AM2.46m
8:19PM-0.67m
8:45AM2.60m
9:08PM-0.91m
9:48AM2.58m
9:57PM-1.02m
10:44AM2.47m
10:44PM-0.99m
Wave
height (m) 
direction
period (s) 
cloud
cloud
cloud
light rain
light rain
light rain
cloud
light rain
light rain
cloud
cloud
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
light rain
light rain
rain showers
clear
cloud
light rain
light rain
mod rain
rain showers
cloudy
cloudy
cloudy
light rain
light rain
light rain
cloudy
light rain
light rain
cloudy
cloudy
light rain
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
clear
some clouds
some clouds
some clouds
light rain
light rain
rain shwrs
clear
cloudy
light rain
light rain
mod rain
rain shwrs
 km/h
10
S
5
SSE
15
N
15
N
35
S
0
NNW
20
NNW
15
NNW
5
ENE
5
NNW
10
N
5
ENE
0
NW
5
NE
5
N
5
N
5
N
5
N
5
N
10
N
5
N
5
NNE
5
N
5
SSE
10
SSE
10
SSE
10
SSE
10
SSW
10
SSE
25
S
15
SSW
15
SSW
20
S
15
SSE
20
SSE
25
S
 mm 
2
3
1
1
4
2
2
1
4
1
4
8
5
max°C
7
6
5
5
10
7
7
6
5
6
6
4
4
4
4
3
2
2
3
3
3
6
6
4
7
8
8
7
7
10
7
6
5
5
6
6
Moonrise
10:37
10:56
11:13
11:29
11:44
12:02
12:23
12:50
1:27
2:19
3:27
4:49
Moonset
8:06
9:19
10:33
11:48
1:05
2:25
3:51
5:18
6:40
7:51
8:44
Sunrise
7:56
7:56
7:56
7:56
7:58
7:58
7:58
7:58
7:58
7:58
7:58
7:58
Sunset
4:21
4:22
4:22
4:22
4:23
4:23
4:24
4:25
4:27
4:28
4:29
4:30
Today's sea temperature in Port Jefferson is
9.6° C
(Statistics for 23 Dec 1981-2005 – mean: 8.4 max: 9.6 min: 7.2°C)
Issued (local time): 9 am Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest