Cupsogue surfForecast / Long Island NY / USA

information circle48hr Weather and Surf, issued 7 pm Friday 15 May 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Cupsogue surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cupsogue sea temperature is
11.9° C
(Which is slightly warmer than usual)

How big are the waves at Cupsogue today?

The current surf forecast for Cupsogue at 3AM is: 0.6m 8s primary swell from a South-southeast direction (forecast issued at 07:00pm May 15). An open ocean swell of 0.9m 10s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (EDT) & DateWave HeightWave Period
Morning (16 May)2ft (0.6m)8s
Afternoon (16 May)2ft (0.6m)8s
Evening (16 May)3.5ft (1.0m)5s

Table - waves today at Cupsogue. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 25°C on Sun night, min 12°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SW by Sat night).

Fri
15
Saturday
16
Sunday
17
Mon
18
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
Rating
(10 max)
1
0
1
1
0
1
0
0
0
0
0
0
1
1
2
0
0
0
1
1
0
0
0
0
Swell
Height Map
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.7
SSE
8
0.5
S
8
0.5
S
8
0.6
S
9
0.6
SSE
8
0.6
SSE
8
0.7
SSE
9
0.6
SSE
9
0.6
SSE
8
0.5
SSE
8
1.2
SSW
6
1.3
SSW
6
1.2
S
6
1.2
S
7
1.2
S
7
0.9
S
7
1
S
8
1.1
S
8
1.1
S
8
0.8
S
7
0.7
S
7
0.6
SSE
8
0.7
SSE
7
0.7
SSE
7
Wave Graph
Metric surfscale
Energy kJ
72
33
30
54
53
54
70
58
55
39
97
134
123
139
159
78
111
135
135
57
43
39
57
57
Wind (km/h)
10
WNW
20
N
10
NNE
5
NE
5
SW
15
WSW
20
SW
25
SSW
20
SSW
30
SSW
35
SW
30
SW
20
WSW
15
W
10
WSW
20
SW
25
SW
20
SW
15
WSW
5
NNE
15
ENE
20
E
20
E
15
ESE
cross-off
cross-off
cross-off
glassy
cross
cross-off
cross
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
glassy
cross
cross-on
cross-on
on
High Tide
7:14PM1.24m
7:39AM1.01m
8:03PM1.28m
8:31AM1.01m
8:54PM1.29m
9:24AM1.00m
Low Tide
1:10AM-0.05m
1:11PM-0.09m
2:01AM-0.09m
2:00PM-0.09m
2:52AM-0.09m
clear
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:31
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
8:00
8:01
8:02
Temp °C
17
15
12
12
12
13
15
17
16
15
15
14
17
19
23
23
23
23
25
22
20
17
16
16
14
11
10
11
11
10
11
12
12
9
8
9
14
18
23
21
20
21
24
23
18
12
11
14
Swell 1
Height (m)
Direction
Period (s)
1.1
SE
9
1.2
ESE
9
1.1
SE
9
1
ESE
10
0.9
ESE
10
0.8
ESE
10
0.8
ESE
9
0.6
ESE
9
0.6
ESE
9
0.5
ESE
9
0.5
SSE
8
0.5
SSE
8
1.2
S
6
1.2
S
7
1.2
S
7
0.9
S
7
1
S
8
1.1
S
8
1.1
S
8
0.8
S
7
0.7
S
7
0.6
S
7
0.7
SSE
7
0.7
SSE
7
Energy kJ
203
236
194
196
129
105
92
64
61
44
39
40
123
139
159
78
111
135
135
57
43
33
57
57
Swell 2
Height (m)
Direction
Period (s)
0.7
SSE
8
0.5
S
8
0.5
S
8
0.5
S
9
0.6
SSE
8
0.6
SSE
8
0.7
SSE
9
0.6
SSE
9
0.6
SSE
8
0.5
SSE
8
0.5
ESE
9
0.4
ESE
9
0.4
SSE
8
0.3
ESE
8
0.9
SSW
7
0.6
SE
8
0.2
E
8
0.6
SSE
8
0.5
SE
8
0.6
SSE
8
0.3
E
3
Energy kJ
72
33
30
38
53
54
70
58
55
39
45
31
28
14
70
57
5
43
30
39
2
Swell 3
Height (m)
Direction
Period (s)
0.6
SSE
8
0.5
S
8
0.2
SSE
10
0.6
S
9
0.4
SE
10
0.4
SE
10
0.5
E
9
0.3
ENE
9
0.4
ESE
9
0.6
SW
6
0.3
ESE
8
0.2
E
8
0.1
S
15
0.1
S
15
0.1
S
15
0.1
S
14
Energy kJ
54
33
10
54
25
25
42
16
30
24
14
5
4
4
4
4
Wind waves
Height (m)
Direction
Period (s)
0.5
WSW
3
0.2
NNE
2
0.4
SW
3
0.5
S
3
0.9
SSW
4
1.2
SSW
6
1.3
SSW
6
1.1
SW
6
0.9
SW
6
0.9
SSW
7
0.9
SSW
7
1
SSW
7
0.3
E
3
Energy kJ
7
1
2
6
34
97
134
82
58
66
82
99
1
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
2
1
1
1
1
1
1
1
1
2
2
1
1
1
2
1
1
1
1
1
Distance (km)
0
39
0
0
68
0
77
77
100
100
1171
277
77
15
0
77
77
126
15
0
50
117
120
651
Best forecast wave conditions in Long Island New York
Rating
(10 max)
2
2
2
2
2
2
1
1
1
2
2
1
1
2
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
3
2
3
4
2
4
2
4
3
3
4
2
2
2
4
4
1
3
4
4
3
3
4
Header Global
Rating
(10 max)
5
5
5
5
4
5
6
6
5
4
5
4
7
9
9
4
4
4
4
5
4
4
4
4
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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