Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Cupsogue surfForecast / Long Island NY / USA
48hr Weather and Surf, issued 12 am Sunday 21 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 1.6°C colder than average for this time of year)How big are the waves at Cupsogue today?
The current surf forecast for Cupsogue at 7AM is: 1.6m 7s primary swell from a South-southwest direction and 0.6m 9s secondary swell from a Southeast direction, 0.6m 9s secondary swell from a Southeast direction (forecast issued at 12:00am December 21). The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Dec) | 5ft (1.5m) | 7s |
| Afternoon (21 Dec) | 3.5ft (1.0m) | 7s |
| Evening (21 Dec) | 1.5ft (0.5m) | 10s |
Table - waves today at Cupsogue. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||||||||||||
| 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 | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 10 | 6 | 7 | 7 | 7 | 11 | 10 | 10 | 10 | 10 | 10 | 7 | 7 | 7 | 6 | 6 | 4 | 4 | 4 | 5 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 165 | 98 | 167 | 232 | 352 | 136 | 92 | 89 | 52 | 51 | 49 | 48 | 4 | 1 | 1 | 1 | 1 | 3 | 6 | 9 | 14 | 76 | 40 | 40 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- off | cross- off | off | off | off | off | off | off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- on | cross |
High Tide / height (m) | 7:50PM 0.74 | 8:04AM 0.98 | 8:32PM 0.75 | 8:45AM 0.97 | 9:15PM 0.75 | 9:27AM 0.94 | ||||||||||||||||||
Low Tide / height (m) | 1:02AM -0.00 | 1:52PM -0.03 | 1:44AM -0.01 | 2:29PM -0.05 | 2:26AM -0.01 | 3:08PM -0.05 | ||||||||||||||||||
Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:25 | - | - | - | - | - | - | - | 4:25 | - | - | - | - | - | - | - | 4:27 | - |
 | | |  |  | | | | | | | | |  |  | | | | | |  | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 |
| Temp. °C | 4 | 6 | 7 | 5 | 6 | 6 | 2 | 0 | -1 | -1 | -1 | -2 | -2 | 0 | 1 | 2 | 3 | 4 | 2 | 1 | 2 | 3 | 2 | 3 |
| Feels °C (?) | -5 | -4 | -3 | -4 | -2 | -3 | -8 | -10 | -10 | -10 | -9 | -10 | -9 | -7 | -5 | -4 | -3 | -3 | -6 | -6 | -4 | -1 | -1 | -1 |
- 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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