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Surf Forecasts:
Cupsogue surfForecast / Long Island NY / USA
48hr Weather and Surf, issued 6 pm Friday 19 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
7.1° C
(Which is 1.8°C colder than average for this time of year)How big are the waves at Cupsogue today?
The current surf forecast for Cupsogue at 9PM is: 2.5m 10s primary swell from a South direction and 1.6m 7s secondary swell from a West-southwest direction (forecast issued at 06:00pm December 19). The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Dec) | - | - |
| Afternoon (19 Dec) | 10ft (3.0m) | 9s |
| Evening (19 Dec) | 8ft (2.5m) | 10s |
Table - waves today at Cupsogue. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||||||
| 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 | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 6 | 7 | 7 | 7 | 7 | 7 | 11 | 10 | 10 | 10 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1094 | 1858 | 1481 | 1144 | 846 | 573 | 410 | 294 | 240 | 108 | 87 | 135 | 175 | 419 | 428 | 134 | 109 | 90 | 52 | 51 | 49 | 4 | 4 | 1 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | off |
High Tide / height (m) | 7:07PM 0.74 | 7:23AM 0.99 | 7:50PM 0.74 | 8:04AM 0.98 | 8:32PM 0.75 | 8:45AM 0.97 | ||||||||||||||||||
Low Tide / height (m) | 12:22AM 0.02 | 1:16PM -0.01 | 1:02AM -0.00 | 1:52PM -0.03 | 1:44AM -0.01 | |||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - |
| Sunset | 4:24 | - | - | - | - | - | - | - | 4:24 | - | - | - | - | - | - | - | 4:25 | - | - | - | - | - | - | - |
 |  |  |  | | |  | | | | | | |  | |  |  | | | | | | | | |
Rain (mm) | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 5 | 0 | -1 | -1 | -1 | -1 | 1 | 1 | 3 | 4 | 6 | 6 | 5 | 4 | 5 | 4 | 1 | -1 | -1 | -2 | -4 | -3 | -1 |
| Feels °C (?) | 3 | -8 | -12 | -12 | -11 | -9 | -8 | -5 | -6 | -5 | -6 | -4 | -4 | -4 | -4 | -3 | -5 | -9 | -11 | -12 | -13 | -13 | -10 | -8 |
- 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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