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Cupsogue Surf Forecast
/ Long Island NY (34 breaks) / New York (44 breaks) /
Surf Forecasts:
Cupsogue surfForecast / Long Island NY / USA
16 Day Weather and Surf, issued 1 am Sunday 17 May 2026 EDTForecast 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 normal for this time of year)Best Forecast Surf Conditions for Cupsogue this week:
The surf forecast for Cupsogue over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (May 17) at 8AM. The primary swell is predicted to be 1.2m and 7s period with a secondary swell of 0.9m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cupsogue in the next 16 days are 1.6m 6s and forecast to arrive on Tuesday (May 19) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (May 22) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 17th May) | 4ft (1.2m) 7s |
| Best Surf | 8AM (Sun 17th May) | 4ft (1.2m) 7s |
| Most Powerful | 11PM (Tue 19th May) | 5ft (1.6m) 6s |
Table - best surf conditions forecast for Cupsogue over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Warm (max 24°C on Sun afternoon, min 16°C on Mon morning). Winds increasing (light winds from the WSW on Sun night, fresh winds from the SW by Tue night). | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Fri afternoon. Warm (max 23°C on Wed afternoon, min 8°C on Fri afternoon). Mainly fresh winds. | ||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
S 8 | S 8 | S 7 | SSE 7 | SSE 7 | SSE 8 | SSW 6 | S 6 | SSW 7 | SSW 6 | SSW 6 | S 6 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 6 | SE 6 | SE 6 | SSE 6 | |
138 | 138 | 131 | 78 | 57 | 58 | 43 | 66 | 187 | 127 | 115 | 61 | 28 | 26 | 26 | 29 | 29 | 23 | 32 | 31 | 13 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross | cross-off | cross-on | on | cross | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-on | on | cross-on | on | cross-off | cross | cross | cross-off | |
High Tide | 8:31AM1.01m | 8:54PM1.29m | 9:24AM1.00m | 9:46PM1.27m | 10:19AM0.98m | 10:40PM1.22m | 11:15AM0.96m | 11:36PM1.16m | 12:13PM0.94m | 00:33AM1.09m | 1:13PM0.92m | 1:33AM1.01m | 2:15PM0.92m | 2:34AM0.95m | |||||||
Low Tide | 2:00PM-0.09m | 2:52AM-0.09m | 2:50PM-0.07m | 3:43AM-0.07m | 3:42PM-0.02m | 4:36AM-0.03m | 4:36PM0.04m | 5:33AM0.02m | 5:35PM0.11m | 6:33AM0.07m | 6:41PM0.17m | 7:37AM0.11m | 7:56PM0.20m | ||||||||
 | |  |  |  |  | | |  | | | | | | |  |  |  | | |  | |
 | 5:31 | — | — | 5:31 | — | — | 5:30 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | 8:01 | — | — | 8:02 | — | — | 8:04 | — | — | 8:05 | — | — | 8:06 | — | — | 8:07 | — | — | 8:07 | — |
— | — | — | 1 | — | 2 | — | — | — | — | 2 | 2 | — | — | — | — | 4 | 6 | — | — | 1 | |
Temp °C | 23 | 24 | 24 | 17 | 19 | 20 | 22 | 24 | 19 | 20 | 23 | 21 | 14 | 15 | 13 | 11 | 9 | 14 | 16 | 20 | 20 |
23 | 20 | 22 | 15 | 19 | 19 | 21 | 22 | 14 | 17 | 20 | 21 | 10 | 11 | 9 | 7 | 2 | 12 | 14 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | S 8 | SSE 8 | S 7 | SSE 7 | SSE 7 | E 4 | SE 9 | SE 8 | SE 9 | SE 9 | SE 9 | S 6 | S 6 | S 6 | ESE 4 | SE 9 | ESE 4 | SE 6 | SE 6 | SE 6 | ESE 6 |
 kJ | 138 | 89 | 131 | 78 | 57 | 1 | 36 | 35 | 26 | 28 | 29 | 61 | 27 | 19 | 6 | 29 | 13 | 23 | 32 | 31 | 13 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | E 8 | S 15 | — | E 4 | SE 13 | SE 13 | SE 13 | SE 16 | SE 15 | SE 15 | SE 9 | SE 9 | SE 9 | S 6 | S 6 | SE 9 | SE 10 | ESE 10 | ESE 10 | SSE 6 |
| kJ | 68 | 5 | 4 | — | 3 | 7 | 7 | 7 | 10 | 8 | 8 | 29 | 28 | 26 | 12 | 6 | 29 | 14 | 9 | 9 | 13 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | — | — | — | S 14 | S 17 | — | S 16 | — | — | — | SE 15 | SE 14 | SE 14 | SE 9 | SE 13 | SSE 6 | SE 13 | SE 13 | SE 13 | SE 10 |
| kJ | 14 | — | — | — | 4 | 5 | — | 5 | — | — | — | 8 | 8 | 8 | 26 | 7 | 3 | 7 | 7 | 7 | 4 |
Wind waves Height (m) Direction Period (s) | — | S 8 | SSW 6 | E 3 | — | SSE 8 | SSW 6 | S 6 | SSW 7 | SSW 6 | SSW 6 | N 2 | NE 4 | E 4 | — | ESE 4 | — | — | — | — | — |
| kJ | — | 138 | 40 | 6 | — | 58 | 43 | 66 | 187 | 127 | 115 | 1 | 5 | 4 | — | 10 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 115 | 0 | 100 | 0 | 55 | 735 | 287 | 116 | 327 | 287 | 100 | 116 | 4 | 0 | 735 | 48 | 1005 | 595 | 327 | 353 | 1171 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cupsogue surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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 16 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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