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Cupsogue Surf Forecast
/ Long Island NY (34 breaks) / New York (44 breaks) /
Surf Forecasts:
Cupsogue surfForecast / Long Island NY / USA
12 Day Weather and Surf, issued 6 pm Sunday 07 Dec 2025 ESTForecast 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
9.5° C
(Which is slightly cooler than normal)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 Friday (Dec 12) at 10AM. The primary swell is predicted to be 0.6m and 8s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cupsogue in the next 12 days are 2.5m 9s and forecast to arrive on Thursday (Dec 11) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Dec 12) at 4AM.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 12th Dec) | 2ft (0.6m) 8s |
| Best Surf | 10AM (Fri 12th Dec) | 2ft (0.6m) 8s |
| Most Powerful | 4AM (Thu 11th Dec) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Cupsogue over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Icy conditions (max 8°C on Wed morning, min -5°C on Mon morning). Mainly strong winds. | Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Wed night. Icy conditions (max 10°C on Wed afternoon, min -2°C on Sat morning). Winds decreasing (near gales from the SW on Wed afternoon, light winds from the WNW by Fri afternoon). | ||||||||||||||||||||||
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 7 | 6 | 6 | 6 | 6 | 9 | 2 | 6 | 7 | 8 | 9 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 7 | 6 | 5 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 8 | 3 | 3 | 1 | 19 | 0 | 1 | 170 | 121 | 850 | 847 | 332 | 217 | 69 | 40 | 23 | 12 | 7 | 91 | 10 | 3 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- on | cross- off | cross | cross | cross- off | off | off | cross- off | off | cross- off | cross- off | cross- off | off | off | glass | ||
High Tide / height (m) | 9:28PM 0.89 | 9:47AM 1.10 | 10:22PM 0.87 | 10:41AM 1.02 | 11:18PM 0.84 | 11:35AM 0.94 | 12:15AM 0.82 | 12:32PM 0.86 | 1:13AM 0.82 | 1:30PM 0.79 | 2:10AM 0.82 | 2:28PM 0.75 | 3:05AM 0.84 | ||||||||||
Low Tide / height (m) | 2:51AM -0.06 | 3:46PM -0.08 | 3:44AM 0.00 | 4:38PM -0.03 | 4:41AM 0.07 | 5:33PM 0.02 | 5:44AM 0.13 | 6:28PM 0.06 | 6:54AM 0.16 | 7:20PM 0.09 | 8:10AM 0.18 | 8:08PM 0.10 | 9:21AM 0.17 | ||||||||||
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||
| Sunrise | - | - | 7:01 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - | 7:05 | - | - | 7:05 | ||
| Sunset | 4:22 | - | - | 4:22 | - | - | 4:22 | - | - | 4:22 | - | - | 4:22 | - | - | 4:22 | - | - | 4:22 | - | - | ||
 |  |  | | | | | | | |  |  | |  | | | | | | | | |||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 2 | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 5 | 4 | -4 | -3 | -4 | -1 | 5 | 7 | 8 | 10 | 8 | 3 | 2 | 2 | 2 | 3 | 4 | -1 | -3 | -3 | -1 | ||
| Feels °C (?) | -2 | -4 | -13 | -12 | -12 | -7 | -5 | -4 | -1 | -1 | -2 | -6 | -7 | -5 | -4 | -3 | -1 | -12 | -14 | -12 | -6 | ||
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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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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.
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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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