Cupsogue surfForecast / Long Island NY / USA

information circle48hr Weather and Surf, issued 1 pm Sunday 31 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
14.1° C
(Which is normal for this time of year)

How big are the waves at Cupsogue today (31 May):

  • Morning surf: Morning surf (31 May, local time) - 0.5ft (0.2m), 6s period with SSW swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 0.5ft (0.1m), 6s period with S swell.
  • Evening surf: Evening surf (31 May, local time) - 2.5ft (0.7m), 4s period with SSW swell.

The current surf forecast for Cupsogue at 10PM is: 0.6m 5s primary swell from a South-southwest direction (forecast issued at 01:00pm May 31). An open ocean swell of 0.7m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (31 May)0.5ft (0.2m)6s
Afternoon (31 May)0.5ft (0.1m)6s
Evening (31 May)2.5ft (0.7m)4s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 18°C on Mon afternoon, min 11°C on Mon night). Winds decreasing (fresh winds from the NE on Mon afternoon, calm by Tue morning).

Sun
31
Monday
1
Tuesday
2
Wed
3
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
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
Rating
(10 max)
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.2
SSW
6
0.1
S
6
0.6
SSW
3
0.7
SSW
4
0.6
SSW
5
0.6
SSW
5
0.8
SSW
5
0.5
S
5
0.5
S
6
0.5
S
6
0.4
SSW
5
0.9
E
5
1
E
5
1.1
E
6
0.2
SSW
5
0.8
ENE
5
0.2
S
6
0.2
S
6
0.3
S
6
0.2
S
6
0.3
SSE
8
0.3
SSE
8
0.2
SSE
7
0.2
SSE
8
Wave Graph
Metric surfscale
Energy kJ
4
1
8
16
20
23
37
15
16
15
9
35
56
78
3
39
3
3
7
3
13
11
5
6
Wind (km/h)
10
W
25
SW
25
SW
20
SW
15
NE
5
ENE
10
WSW
15
NW
20
N
20
ENE
35
NE
25
ENE
20
ENE
15
NE
10
NNE
10
N
5
NNE
15
S
20
S
15
S
15
SW
15
WSW
10
N
15
NNE
cross-off
cross
cross
cross
cross
cross
cross-off
off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
High Tide
8:14AM0.85m
8:31PM1.09m
8:57AM0.84m
9:12PM1.07m
9:40AM0.84m
9:54PM1.05m
Low Tide
1:30PM0.12m
2:25AM0.11m
2:09PM0.11m
2:59AM0.10m
2:49PM0.12m
3:35AM0.10m
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:15
8:15
8:16
Temp °C
16
17
16
16
15
14
14
15
16
18
14
12
12
11
11
12
16
15
15
14
14
15
14
14
13
11
10
13
12
13
12
12
11
13
7
6
8
7
8
9
14
11
11
11
11
13
12
11
Swell 1
Height (m)
Direction
Period (s)
0.9
ESE
10
0.9
ESE
10
0.8
ESE
10
0.7
ESE
10
0.7
E
10
0.6
SSW
5
0.6
E
9
0.6
E
9
0.5
E
9
0.5
E
9
0.4
SSW
5
0.4
ESE
9
0.4
ESE
9
0.9
E
6
0.8
E
6
0.6
E
5
0.5
E
5
0.5
E
5
0.6
E
9
0.5
ESE
9
0.5
ESE
9
0.5
ESE
9
0.4
ESE
9
0.4
ESE
9
Energy kJ
173
180
136
102
90
23
59
57
40
40
9
25
25
50
39
20
14
13
64
50
49
49
28
29
Swell 2
Height (m)
Direction
Period (s)
0.2
SSW
6
0.1
S
6
0.1
S
7
0.1
S
7
0.6
SSW
5
0.6
E
9
0.6
S
6
0.5
S
5
0.5
S
6
0.5
S
6
0.3
SSW
5
0.3
SSW
5
0.4
ESE
9
0.4
ESE
9
0.4
ESE
9
0.4
ESE
9
0.4
ESE
9
0.3
S
6
0.2
S
6
0.3
SSE
8
0.3
SSE
8
0.2
SSE
7
0.2
SSE
8
Energy kJ
4
1
1
1
20
61
22
15
16
15
5
5
26
26
26
26
28
7
3
13
11
5
6
Swell 3
Height (m)
Direction
Period (s)
0.1
S
9
0.2
ENE
2
0.2
SSW
5
0.2
SSW
5
0.2
S
5
0.2
S
6
0.2
S
6
0.1
SE
9
0.1
SE
8
0.1
S
6
0.1
S
6
Energy kJ
2
1
3
3
2
3
3
3
3
1
1
Wind waves
Height (m)
Direction
Period (s)
0.3
WNW
3
0.2
WSW
3
0.6
SSW
3
0.7
SSW
4
0.8
SSW
5
0.3
ENE
2
0.8
E
9
0.9
E
5
1
E
5
1.1
E
6
0.8
ENE
5
0.3
S
2
0.2
SSW
3
Energy kJ
2
1
8
16
37
1
93
35
56
78
39
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
4
123
116
43
17
4
0
4
39
55
225
225
225
0
4
0
43
225
225
119
119
15
17
53
Best forecast wave conditions in Long Island New York
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
2
2
1
3
4
1
3
2
1
2
1
3
3
3
3
2
1
2
1
3
3
3
3
Header Global
Rating
(10 max)
6
5
5
5
5
5
5
4
5
5
5
8
5
4
6
4
5
4
5
5
5
4
4
5
  • 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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