Long Island Sea Conditions and Tide Table

Long Island 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 03:52 PM.

Days 1–4 Weather Summary

A dusting of new snow. Air temperatures will be well below freezing (max -7°C on Sat night, min -15°C on Mon night). Winds increasing (light winds from the S on Sat night, strong winds from the W by Mon afternoon).

Days 5–7 Weather Summary

A light covering of new snow, mostly falling on Tue afternoon. Extremely cold air temperatures (max -11°C on Tue night, min -15°C on Wed morning). Mainly strong winds.

Days 8–10 Weather Summary

A light covering of new snow, mostly falling on Fri afternoon. Temperatures will be below freezing (max -5°C on Sun afternoon, min -15°C on Fri night). Winds decreasing (strong winds from the NW on Fri afternoon, moderate winds from the NW by Sun morning).

Days 11–13 Weather Summary

A light covering of new snow, mostly falling on Mon night. Temperatures will be below freezing (max -1°C on Thu morning, min -10°C on Mon night). Winds decreasing (near gales from the SSW on Tue morning, light winds from the S by Thu morning).

Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thu
1
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
8:59PM1.68m
9:06AM1.70m
9:36PM1.69m
9:42AM1.72m
10:13PM1.70m
10:20AM1.73m
10:50PM1.71m
10:57AM1.72m
11:25PM1.72m
11:34AM1.69m
11:59PM1.73m
12:09PM1.67m
00:33AM1.74m
12:47PM1.67m
1:11AM1.76m
1:30PM1.67m
1:55AM1.76m
2:21PM1.68m
2:48AM1.76m
3:20PM1.70m
3:49AM1.76m
4:28PM1.72m
4:52AM1.75m
Low Tide
2:48PM0.39m
3:09AM0.50m
3:25PM0.35m
3:44AM0.48m
4:01PM0.33m
4:19AM0.46m
4:36PM0.33m
4:55AM0.45m
5:11PM0.34m
5:30AM0.44m
5:44PM0.36m
6:06AM0.44m
6:19PM0.38m
6:44AM0.43m
6:57PM0.39m
7:25AM0.42m
7:42PM0.40m
8:14AM0.41m
8:35PM0.42m
9:11AM0.40m
9:38PM0.43m
10:16AM0.38m
10:42PM0.44m
11:21AM0.34m
Wave
height (m) 
direction
period (s) 
0.3
WNW
3
0.1
N
2
0.7
WNW
4
0.9
WNW
4
0.8
WNW
4
0.9
WNW
4
1
WNW
4
1
WNW
4
0.9
WNW
4
0.8
W
4
0.8
WNW
4
0.8
WNW
4
0.8
WNW
4
0.8
WNW
4
1.3
WNW
4
1.5
WNW
6
1.2
WNW
4
1.3
NW
4
1.4
NW
5
1
WNW
4
0.9
W
4
0.8
WSW
3
0.7
SSW
3
0.4
SSW
3
0.4
NW
3
0.6
NW
3
0.9
NW
4
0.8
NW
4
0.5
NW
3
0.7
SW
3
0.9
SW
4
0.4
SW
3
0.4
SE
2
0.3
ESE
2
0.3
ESE
2
0.1
E
2
cloud
light snow
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
light snow
light snow
cloud
light snow
cloud
cloud
light snow
light snow
cloud
light snow
light snow
cloud
cloud
light snow
light snow
cloud
cloud
light snow
cloud
light snow
cloud
part cloud
cloud
part cloud
cloud
light snow
light snow
cloudy
light snow
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
cloudy
light snow
light snow
cloudy
light snow
cloudy
cloudy
light snow
light snow
cloudy
light snow
light snow
cloudy
cloudy
light snow
light snow
cloudy
cloudy
light snow
cloudy
light snow
cloudy
some clouds
cloudy
some clouds
cloudy
light snow
light snow
 km/h
15
SSW
10
S
35
WNW
35
W
35
W
35
W
40
W
40
W
35
WSW
35
SW
35
WNW
35
W
35
WSW
35
WSW
50
W
50
WNW
45
WNW
50
NW
45
NW
40
W
40
SW
40
SW
35
SSW
20
S
30
NNW
25
NW
35
NW
35
NW
25
WSW
45
SSW
50
SSW
20
SW
25
ESE
25
ESE
25
ESE
10
S
 mm 
max°C
-9
-7
-8
-12
-13
-13
-13
-14
-14
-12
-11
-14
-12
-12
-14
-13
-12
-11
-11
-13
-13
-12
-10
-7
-5
-5
-6
-7
-8
-10
-8
-6
-7
-4
-2
-1
Moonrise
10:34
10:56
11:12
11:23
11:32
11:39
11:47
11:55
12:06
12:22
12:46
1:27
Moonset
3:43
4:56
6:17
7:40
9:03
10:25
11:48
1:14
2:44
4:20
5:59
7:32
Sunrise
8:40
8:41
8:41
8:41
8:41
8:41
8:41
8:41
8:41
8:41
8:41
8:41
Sunset
3:52
3:52
3:53
3:53
3:55
3:56
3:56
3:56
3:57
3:59
4:00
4:00
Today's sea temperature in Long Island is
-0.4° C
(Statistics for 20 Dec 1981-2005 – mean: -1.4 max: -0.3 min: -1.9°C)
Issued (local time): 6 pm Saturday 20 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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