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 07:54 AM and sunset is at 04:19 PM.

Days 1–3 Weather Summary

Moderate rain (total 13mm), heaviest on Sun afternoon. Low air temperatures (max 8°C on Sun morning, min 4°C on Fri afternoon). Wind will be generally light.

Days 4–6 Weather Summary

Heavy rain (total 30mm), heaviest during Mon afternoon. Low air temperatures (max 8°C on Mon morning, min 3°C on Wed night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 7mm) at first, then becoming colder with a dusting of snow on Fri night. Mild temperatures (max 5°C on Thu morning, min 1°C on Thu night). Wind will be generally light.

Days 10–12 Weather Summary

Moderate rain (total 12mm), heaviest on Mon night. Mild temperatures (max 8°C on Tue morning, min 2°C on Sun night). Winds increasing (calm on Sun afternoon, fresh winds from the SSW by Tue night).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
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
2:57PM2.95m
6:24AM3.54m
3:33PM2.94m
6:56AM3.59m
4:11PM2.91m
7:26AM3.62m
4:53PM2.85m
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
Low Tide
10:48AM2.47m
10:31PM-0.42m
11:26AM2.47m
11:05PM-0.46m
12:05PM2.43m
11:41PM-0.45m
12:46PM2.36m
00:17AM-0.37m
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
Wave
height (m) 
direction
period (s) 
part cloud
clear
part cloud
rain showers
light rain
rain showers
rain showers
light rain
rain showers
light rain
rain showers
light rain
rain showers
light rain
light rain
mod rain
light rain
part cloud
cloud
light rain
part cloud
part cloud
cloud
light snow
cloud
part cloud
part cloud
clear
part cloud
clear
cloud
cloud
mod rain
rain showers
light rain
rain showers
some clouds
clear
some clouds
rain shwrs
light rain
rain shwrs
rain shwrs
light rain
rain shwrs
light rain
rain shwrs
light rain
rain shwrs
light rain
light rain
mod rain
light rain
some clouds
cloudy
light rain
some clouds
some clouds
cloudy
light snow
cloudy
some clouds
some clouds
clear
some clouds
clear
cloudy
cloudy
mod rain
rain shwrs
light rain
rain shwrs
 km/h
15
SSW
20
SSW
25
SSW
25
S
25
S
20
S
20
S
25
SSW
20
S
25
S
30
S
20
S
15
SSE
5
S
10
N
15
NNW
5
S
0
N
15
N
0
NNE
15
N
15
N
15
N
5
NNW
10
NNW
10
N
5
NNW
0
ENE
5
NNE
5
SE
10
SSE
10
SSE
10
S
15
SSE
20
S
15
SW
 mm 
1
3
3
1
4
1
1
11
1
1
2
2
8
4
4
3
8
1
1
2
max°C
7
6
5
6
7
7
8
6
6
8
6
5
6
6
5
4
4
5
5
4
4
3
2
3
4
4
4
5
6
4
5
6
5
8
8
7
Moonrise
8:12
9:02
9:42
10:12
10:37
10:56
11:13
11:29
11:44
12:02
12:23
12:50
Moonset
3:37
4:35
5:41
6:52
8:06
9:19
10:33
11:48
1:05
2:25
3:51
Sunrise
7:54
7:54
7:54
7:56
7:56
7:56
7:56
7:56
7:58
7:58
7:58
7:58
Sunset
4:19
4:19
4:20
4:20
4:21
4:22
4:22
4:22
4:23
4:23
4:24
4:25
Today's sea temperature in Port Jefferson is
9.9° C
(Statistics for 19 Dec 1981-2005 – mean: 8.5 max: 9.7 min: 7.3°C)
Issued (local time): 9 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest