Southold, Long Island Sound Sea Conditions and Tide Table

Southold, Long Island Sound 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 07:09 AM and sunset is at 04:22 PM.

Days 1–3 Weather Summary

Moderate rain (total 14mm), heaviest on Fri morning. Icy conditions (max 13°C on Thu night, min -1°C on Fri night). Winds increasing (light winds from the E on Wed night, gales from the S by Fri morning).

Days 4–6 Weather Summary

Mostly dry. Icy conditions (max 7°C on Sat night, min -4°C on Sun night). Winds decreasing (strong winds from the NW on Sun night, light winds from the WSW by Mon night).

Days 7–9 Weather Summary

Moderate rain (total 14mm), heaviest on Fri morning. Freeze-thaw conditions (max 5°C on Thu morning, min 0°C on Wed afternoon). Winds decreasing (fresh winds from the W on Tue night, calm by Wed night).

Days 10–12 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 2°C on Fri night, min -10°C on Sat night). Winds decreasing (fresh winds from the NNW on Sat night, calm by Sun night).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
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
Wave Height Map
High Tide
9:40AM0.79m
10:13PM0.56m
10:15AM0.80m
10:51PM0.57m
10:51AM0.80m
11:30PM0.58m
11:28AM0.79m
00:10AM0.59m
12:07PM0.78m
00:51AM0.59m
12:48PM0.75m
1:35AM0.61m
1:32PM0.72m
2:21AM0.63m
2:22PM0.68m
3:10AM0.66m
3:17PM0.64m
4:03AM0.69m
4:17PM0.61m
4:59AM0.74m
5:21PM0.58m
5:55AM0.80m
6:24PM0.57m
Low Tide
4:13PM0.02m
4:04AM0.11m
4:54PM0.00m
4:45AM0.12m
5:34PM-0.01m
5:27AM0.12m
6:15PM-0.01m
6:11AM0.13m
6:58PM-0.00m
6:57AM0.14m
7:40PM0.01m
7:47AM0.15m
8:25PM0.03m
8:41AM0.14m
9:11PM0.05m
9:40AM0.13m
9:58PM0.06m
10:40AM0.10m
10:48PM0.06m
11:40AM0.06m
11:39PM0.05m
12:38PM0.02m
Wave
height (m) 
direction
period (s) 
0.5
S
7
0.6
S
7
1.1
SSE
6
2.2
SSE
8
1.8
SSE
11
1.7
SSE
11
0.9
SSE
10
0.7
SSE
10
1
SSE
9
1.1
S
8
1
S
8
1
NW
4
0.9
NW
4
0.7
NNW
4
0.2
ESE
10
0.7
SW
4
1
SSW
7
0.8
SSW
7
0.7
NW
3
0.5
NNW
3
0.2
S
6
0.5
S
4
0.5
S
5
0.6
S
6
0.9
ESE
5
0.8
ESE
5
0.9
NNW
4
0.6
NNW
4
0.7
NNW
4
0.8
NNW
4
0.7
N
4
0.4
NNW
3
0.2
N
3
0.1
SE
12
0.1
SE
12
clear
clear
rain showers
heavy rain
rain showers
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
cloud
cloud
cloud
part cloud
clear
part cloud
cloud
light rain
cloud
cloud
mod rain
rain showers
clear
clear
clear
clear
clear
clear
part cloud
cloud
light snow
clear
clear
rain shwrs
heavy rain
rain shwrs
some clouds
clear
some clouds
some clouds
some clouds
clear
clear
clear
clear
cloudy
cloudy
cloudy
some clouds
clear
some clouds
cloudy
light rain
cloudy
cloudy
mod rain
rain shwrs
clear
clear
clear
clear
clear
clear
some clouds
cloudy
light snow
 km/h
10
SSE
15
SE
30
S
60
S
40
WSW
50
W
25
WNW
15
SW
30
SSW
30
WSW
35
WNW
45
WNW
40
NW
30
NW
10
WSW
35
SW
35
WSW
30
W
30
NW
20
NNW
5
SSE
20
SW
10
NW
20
NE
25
E
25
NNE
35
NW
25
NNW
30
NNW
35
NW
25
NNW
20
NNW
10
N
5
ESE
15
SSE
 mm 
2
11
1
2
8
4
max°C
5
10
13
13
7
0
0
1
7
6
6
-1
-2
-2
1
4
3
3
2
2
4
5
4
3
5
3
2
-3
-3
-5
-7
-6
-7
-4
-2
Moonrise
6:11
7:09
8:01
8:45
9:22
9:53
10:19
10:42
11:04
11:25
11:48
12:15
Moonset
2:56
3:44
4:39
5:41
6:47
7:54
9:01
10:08
11:17
12:26
1:40
Sunrise
7:09
7:09
7:09
7:11
7:11
7:11
7:11
7:11
7:13
7:13
7:13
7:13
Sunset
4:22
4:22
4:22
4:23
4:23
4:24
4:25
4:25
4:27
4:27
4:28
4:29
Today's sea temperature in Southold, Long Island Sound is
6.6° C
(Statistics for 18 Dec 1981-2005 – mean: 8.7 max: 11.9 min: 7.1°C)
Issued (local time): 12 am Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest