Cupsogue surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 7 pm Tuesday 08 Jul 2025 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
22.4° C
(Which is 1.5°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Cupsogue this week:

The surf forecast for Cupsogue over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 09) at 5AM. The primary swell is predicted to be 1.1m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cupsogue in the next 12 days are 1.2m 7s and forecast to arrive on Wednesday (Jul 09) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 9s period and expected on Wednesday (Jul 09) at 5AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 9th Jul)3.5ft (1.1m) 7s
Best Surf 5AM (Wed 9th Jul)3.5ft (1.1m) 7s
Most Powerful 2AM (Wed 9th Jul)4ft (1.2m) 7s

Table - best surf conditions forecast for Cupsogue over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sun
20
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.2
S
1
S
1
S
0.9
S
0.9
S
0.9
S
0.9
S
0.8
S
0.8
S
0.9
SSE
0.8
SSE
0.9
SSE
0.8
S
0.7
SSE
0.8
SSE
0.8
S
0.6
S
0.5
S
0.4
S
0.3
SSE
0.3
SSE
0.2
SSE
0.2
S
0.4
S
0.2
S
0.1
S
0.6
S
0.7
SSW
0.7
S
1
S
1.2
S
1.2
S
1
S
1
SSW
0.7
S
0.6
S
Period(s) (?)7777677667777777766655665174555666666
Wave
Graph
(?)Metric surfscale
Energy (?)14495104938582906666101718082666864311911655317414274442821231381071476155
Wind
(km/h)
20
SW
5
W
15
S
10
WNW
5
S
10
SSW
5
SSE
10
NE
10
ESE
10
ENE
15
E
10
SE
10
SSE
15
SSE
15
S
15
SW
10
SSW
15
SW
5
WNW
5
SSE
20
SSW
15
SW
15
SW
20
S
15
SW
15
SSW
25
SSW
25
SW
25
WSW
25
NW
25
N
20
E
15
ESE
15
E
15
E
10
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
on
cross-
off
cross-
on
cross-
on
glasscrossoncross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
crosscross-
on
crosscross-
off
cross-
on
crosscrosscrosscross-
on
crosscross-
on
cross-
on
crosscross-
off
offcross-
off
cross-
on
oncross-
on
cross-
on
on
High Tide
/ height (m)
7:13AM
0.82
7:31PM
1.09
7:57AM
0.85
8:15PM
1.11
8:42AM
0.88
8:58PM
1.12
9:26AM
0.91
9:41PM
1.12
10:11AM
0.95
10:26PM
1.10
10:56AM
0.98
11:11PM
1.07
11:44AM
1.00
11:59PM
1.02
12:34PM
1.02
12:50AM
0.97
1:28PM
1.04
1:47AM
0.91
2:27PM
1.06
2:49AM
0.87
3:29PM
1.08
3:54AM
0.86
4:30PM
1.12
Low Tide
/ height (m)
12:47AM
0.16
12:26PM
0.13
1:28AM
0.12
1:13PM
0.10
2:07AM
0.07
1:59PM
0.07
2:46AM
0.04
2:45PM
0.05
3:26AM
0.01
3:31PM
0.04
4:08AM
-0.01
4:19PM
0.05
4:52AM
-0.01
5:10PM
0.07
5:38AM
-0.00
6:05PM
0.09
6:28AM
0.01
7:04PM
0.12
7:21AM
0.03
8:07PM
0.14
8:16AM
0.05
9:14PM
0.16
9:15AM
0.07
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sun
20
Sunrise-5:26--5:28--5:28--5:28--5:30--5:31--5:31--5:31--5:33--5:33--5:35--5:35-
Sunset--8:23--8:22--8:22--8:22--8:22--8:21--8:21--8:20--8:19--8:19--8:17--8:16
rain showersclearclearrain showerscloudlight rainmod rainrain showersthunderstorm clearclearclearclearclearclearrain showerspart cloudthunderstorm thunderstorm rain showersclearrain showerspart cloudclearrain showersclearclearthunderstorm thunderstorm part cloudclearclearclearclearclearpart cloud
Rain (mm)
10--6-11092------1-251-4--1--22-------
Temp. °C262527262323222223232223222324242526272526262627262626252627241920191919
Feels °C (?)252827282626252626262425242525262928292828282829282827242626211717181718

Short Range Forecast: Heavy rain (total 38mm), heaviest during Tue night. Warm (max 27°C on Wed afternoon, min 22°C on Tue night). Winds decreasing (fresh winds from the SSW on Tue night, calm by Fri morning).

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Sun night. Warm (max 26°C on Mon afternoon, min 22°C on Fri night). Wind will be generally light.

Days 6-9 Weather Summary Moderate rain (total 11mm), heaviest on Tue night. Warm (max 27°C on Mon night, min 24°C on Mon night). Wind will be generally light.

Long Range Forecast: Light rain (total 4mm), mostly falling on Fri morning. Warm (max 27°C on Fri afternoon, min 16°C on Sat morning). Winds decreasing (fresh winds from the SW on Thu night, light winds from the ENE by Sat night).

  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Cupsogue Surf forecast

The above surf forecast table for Cupsogue provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Cupsogue can be found by selecting the local surf guide option on the grey menu. Our Cupsogue surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Cupsogue) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Cupsogue may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Cupsogue is 12 km (7 miles) from Mastic. If you plan a vacation in Long Island New York, look for hotels and other accommodation in Mastic. Mastic has rooms for a wide range of budgets as well as car hire and transport links.

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