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Surf Forecasts:
Coastguards surfForecast / Long Island NY / USA
48hr Weather and Surf, issued 1 am Thursday 21 May 2026 EDTForecast update in hr min s Forecast update imminent
Coastguards surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Coastguards sea temperature is
12.8° C
(Which is slightly warmer than usual)How big are the waves at Coastguards today?
The current surf forecast for Coastguards at 6AM is: 0.8m 6s primary swell from a South direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 01:00am May 21). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 2.5ft (0.7m) | 6s |
| Afternoon (21 May) | 1.5ft (0.4m) | 9s |
| Evening (21 May) | 1.5ft (0.4m) | 9s |
Table - waves today at Coastguards. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 19mm), heaviest on Sat night. Very mild (max 16°C on Thu morning, min 8°C on Sat afternoon). Winds increasing (light winds from the SE on Thu night, fresh winds from the E by Sat night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 6 | S 6 | S 6 | S 6 | SE 9 | SE 9 | SE 9 | SE 9 | E 5 | SE 9 | SE 9 | SE 9 | ESE 5 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | |
76 | 48 | 37 | 37 | 28 | 28 | 27 | 27 | 29 | 26 | 20 | 12 | 97 | 145 | 165 | 170 | 142 | 142 | 158 | 173 | 191 | 185 | 242 | 378 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 11:17PM1.53m | 12:06PM1.29m | 00:17AM1.45m | 1:05PM1.29m | 1:16AM1.37m | 2:02PM1.30m | ||||||||||||||||||
Low Tide | 5:45AM-0.04m | 5:49PM0.13m | 6:44AM0.02m | 6:55PM0.20m | 7:46AM0.06m | 8:05PM0.24m | ||||||||||||||||||
 | |  | |  | | | | | |  | | | | | | | | | | | | |  | |
 | — | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:09 | — |
— | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 2 | 2 | 3 | |
Temp °C | 19 | 16 | 16 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 13 | 12 | 11 | 11 | 11 | 10 | 9 | 8 | 8 | 8 | 9 |
18 | 12 | 11 | 9 | 9 | 11 | 11 | 12 | 11 | 9 | 8 | 8 | 9 | 7 | 7 | 6 | 7 | 6 | 4 | 3 | 2 | 2 | 1 | 2 | |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | E 5 | S 6 | SE 9 | SE 9 | ESE 10 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | S 6 | — |
 kJ | 76 | 48 | 37 | 37 | 27 | 27 | 18 | 18 | 29 | 12 | 20 | 12 | 10 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 1 | — |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | S 6 | SE 9 | S 6 | S 6 | SE 13 | — | — | — | — | SE 13 | — | — | — | SE 13 | — | — |
| kJ | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 11 | 26 | 6 | 3 | 7 | — | — | — | — | 7 | — | — | — | 7 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 15 | SE 14 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 8 | SE 14 | SE 14 | SE 13 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 25 | 7 | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 2 | N 2 | NNE 2 | NE 3 | NE 4 | ENE 4 | E 5 | E 5 | — | E 5 | E 5 | E 5 | ESE 5 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 |
| kJ | 1 | 1 | 1 | 3 | 10 | 14 | 24 | 29 | — | 28 | 37 | 45 | 97 | 145 | 165 | 170 | 142 | 142 | 158 | 173 | 191 | 185 | 242 | 378 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 25 | 0 | 797 | 520 | 0 | 564 | 573 | 554 | 573 | 564 | 578 | 578 | 455 | 455 | 589 | 592 | 455 | 455 | 961 | 434 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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