Cupsogue surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 1 am Wednesday 09 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 1.3°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 1.1m 7s and forecast to arrive on Wednesday (Jul 09) at 5AM. Winds are predicted to be cross-offshore 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 5AM (Wed 9th Jul)3.5ft (1.1m) 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
Sunday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
Swell
Height Map
Wave Height (m) & direction (?)
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
0.9
SSW
Period(s) (?)7776776677777777666556651745556666666
Wave
Graph
(?)Metric surfscale
Energy (?)9510493858290666610171808266686431191165531741427444282123138107147615576
Wind
(km/h)
15
WSW
20
SSW
5
NW
15
SW
15
S
5
SE
15
E
15
ESE
10
E
15
E
15
SE
10
ESE
10
SE
15
S
15
SSW
15
SSW
20
SSW
10
SW
5
E
15
SSW
10
SW
15
SSW
20
S
15
S
15
SSW
30
SSW
20
NW
15
NW
15
NNW
30
NNW
20
NNW
10
WNW
10
NW
10
ESE
15
SSE
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crossglasscrosscross-
on
glasscross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
oncross-
on
crosscrosscross-
on
crossglasscrosscrosscross-
on
cross-
on
cross-
on
crosscrossoffoffcross-
off
cross-
off
cross-
off
offoffcross-
on
cross-
on
cross
High Tide
/ height (m)
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
4:57AM
0.86
Low Tide
/ height (m)
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
10:26PM
0.15
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Sunrise5:26--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-
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Rain (mm)
--5-1---------1--------51-3---------
Temp. °C262725232223222323212121212123252626282827262625262626222623212626222223
Feels °C (?)282727242327242525232123232225272728302928282827282728202318172423202022

Short Range Forecast: Light rain (total 6mm), mostly falling on Wed night. Warm (max 27°C on Wed afternoon, min 22°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Sun night. Warm (max 26°C on Mon afternoon, min 20°C on Sat night). Wind will be generally light.

Days 6-9 Weather Summary Light rain (total 9mm), mostly falling on Wed night. Warm (max 28°C on Tue morning, min 21°C on Thu night). Winds increasing (calm on Tue morning, fresh winds from the SSW by Thu afternoon).

Long Range Forecast: Mostly dry. Warm (max 26°C on Fri afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the NNW on Fri night, light winds from the WNW by Sat afternoon).

  • 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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