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Surf Forecasts:
Cupsogue surfForecast / Long Island NY / USA
48hr Weather and Surf, issued 12 pm Tuesday 30 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
5.5° C
(Which is 2.3°C colder than average for this time of year)How big are the waves at Cupsogue today?
The current surf forecast for Cupsogue at 6PM is: 0.9m 7s primary swell from a South-southwest direction (forecast issued at 12:00pm December 30). An open ocean swell of 0.1m 12s is not directed at the surf break, a second open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Dec) | 2.5ft (0.7m) | 9s |
| Afternoon (30 Dec) | 3ft (0.9m) | 7s |
| Evening (30 Dec) | 3ft (0.9m) | 7s |
Table - waves today at Cupsogue. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 30 | Wednesday 31 | Thursday 01 | Friday 02 | |||||||||||||||||||||
| 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 6 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 80 | 97 | 84 | 90 | 75 | 73 | 49 | 44 | 46 | 43 | 43 | 56 | 67 | 106 | 120 | 132 | 97 | 66 | 45 | 18 | 10 | 12 | 12 | 9 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 3:44PM 0.77 | 4:17AM 1.05 | 4:42PM 0.79 | 5:11AM 1.10 | 5:38PM 0.82 | 6:04AM 1.14 | ||||||||||||||||||
Low Tide / height (m) | 9:04AM 0.00 | 9:06PM -0.09 | 10:11AM -0.04 | 10:05PM -0.10 | 11:17AM -0.08 | 11:06PM -0.12 | ||||||||||||||||||
Tuesday 30 | Wednesday 31 | Thursday 01 | Friday 02 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | - | 7:13 | - | - | - | - | - | - | - | 7:13 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:30 | - | - | - | - | - | - | - | 4:31 | - | - | - | - | - | - | - | 4:32 | - | - | - | - | - |
 | | |  | | |  | |  | | |  | | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | -1 | 0 | 0 | 0 | -1 | -2 | -2 | -2 | -2 | -1 | 0 | 1 | 2 | 1 | 2 | 1 | -4 | -4 | -4 | -4 | -3 | -4 | -4 | -4 |
| Feels °C (?) | -12 | -11 | -11 | -11 | -12 | -12 | -11 | -11 | -11 | -11 | -9 | -8 | -8 | -8 | -8 | -9 | -15 | -15 | -15 | -13 | -11 | -13 | -12 | -12 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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