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Robert Moses State Park Surf Forecast
/ Long Island NY (34 breaks) / New York (44 breaks) /
Surf Forecasts:
Robert Moses State Park surfForecast / Long Island NY / USA
48hr Weather and Surf, issued 7 am Thursday 21 May 2026 EDTForecast update in hr min s Forecast update imminent
Robert Moses State Park surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Robert Moses State Park sea temperature is
12.6° C
(Which is normal for this time of year)How big are the waves at Robert Moses State Park today?
The current surf forecast for Robert Moses State Park at 11AM is: 0.7m 6s primary swell from a South direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 07:00am May 21). An open ocean swell of 0.4m 3s 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 Robert Moses State Park. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 22mm), heaviest during Sat night. Very mild (max 16°C on Thu morning, min 7°C on Sat afternoon). Winds increasing (light winds from the SE on Thu night, strong winds from the E by Sat night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 6 | S 6 | S 6 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 9 | SE 9 | SE 9 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | |
48 | 37 | 37 | 28 | 28 | 27 | 27 | 25 | 27 | 27 | 31 | 73 | 108 | 131 | 131 | 118 | 126 | 149 | 144 | 170 | 234 | 396 | 693 | 853 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-off | cross | cross-on | on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross-on | cross | |
High Tide | 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 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | 5:28 |
 | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:09 | — | 8:09 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 2 | 3 | 3 | 2 | |
Temp °C | 17 | 16 | 16 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 12 | 12 | 11 | 11 | 10 | 9 | 7 | 7 | 8 | 9 | 10 |
13 | 11 | 12 | 10 | 11 | 11 | 11 | 11 | 10 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 6 | 4 | 3 | 1 | 0 | 1 | 2 | 3 | |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | E 5 | S 6 | SE 9 | SE 9 | SSE 6 | SE 9 | ESE 10 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | — | — | — |
 kJ | 48 | 37 | 37 | 27 | 27 | 18 | 20 | 11 | 26 | 27 | 12 | 14 | 10 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | — | — | — |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | E 5 | S 6 | SE 8 | S 6 | SSE 6 | SE 9 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 10 | — | — | — | — | — | — | — |
| kJ | 29 | 29 | 29 | 28 | 28 | 11 | 18 | 25 | 11 | 12 | 28 | 7 | 7 | 7 | 7 | 7 | 4 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 14 | SE 15 | SE 15 | SE 14 | SE 9 | SE 9 | SE 14 | SE 14 | SE 14 | SE 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 8 | 8 | 8 | 8 | 8 | 27 | 27 | 8 | 7 | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 2 | NNE 3 | NE 3 | ENE 4 | ENE 4 | — | — | E 5 | E 5 | E 4 | E 4 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 8 |
| kJ | 1 | 1 | 3 | 9 | 10 | — | — | 21 | 27 | 19 | 31 | 73 | 108 | 131 | 131 | 118 | 126 | 149 | 144 | 170 | 234 | 396 | 693 | 853 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 4 | 4 | 6 | 4 | 793 | 522 | 4 | 546 | 546 | 545 | 551 | 560 | 574 | 590 | 590 | 457 | 546 | 597 | 590 | 457 | 457 | 457 | 474 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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