Robert Moses State Park Surf Forecast

/ Long Island NY (34 breaks) / New York (44 breaks) /

USA (1297 breaks) / Lat Long: (40.62° N 73.26° W)

Surf Forecasts:

Robert Moses State Park surfForecast / Long Island NY / USA

12 Day Weather and Surf, issued 7 pm Thursday 28 Aug 2025 EDT

Forecast update in 4hr 52 min 21 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 72.5°F
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Robert Moses State Park this week:

The surf forecast for Robert Moses State Park over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 05) at 2AM. The primary swell is predicted to be 3ft and 7s period with a secondary swell of 0ft and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Robert Moses State Park in the next 12 days are 5ft 5s and forecast to arrive on Friday (Aug 29) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2ft 3s period and expected on Friday (Aug 29) at 11PM.

Wave Type	Time (EDT) & Date	Wave Height & Period
Next good surf (1 star+)	2AM (Fri 5th Sep)	3ft (0.9m) 7s
Best Surf	2AM (Fri 5th Sep)	3ft (0.9m) 7s
Most Powerful	2AM (Fri 29th Aug)	4.5ft (1.4m) 5s

Table - best surf conditions forecast for Robert Moses State Park over the next 12 days.

Updates in 4 hr 52 min 21 s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 0.2in), mostly falling on Thu night. Warm (max 73°F on Fri afternoon, min 61°F on Fri night). Wind will be generally light.										Days 3-6 Weather Summary Mostly dry. Warm (max 70°F on Sun night, min 61°F on Wed morning). Wind will be generally light.
		Friday 29			Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03			Thu 04
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (ft) & direction (?)	SSW	SSW	S	S	SE	SE	SE	SSE	SE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	ESE	ESE	ESE
Period(s) (?)	5	5	5	5	6	7	6	10	10	9	9	9	9	6	7	8	8	8	7	7	7
Wave Graph (?)
Energy (?)	136	81	49	27	15	28	23	41	27	34	23	21	21	20	22	31	51	50	44	84	92
Wind (mph)	SSW	SW	S	NNW	NW	SW	NNE	N	S	S	ENE	ESE	E	ENE	ESE	ENE	ENE	SE	ESE	ESE	E
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	off	cross- off	cross- on	cross- off	off	cross- on	glass	cross	cross- on	cross	cross	cross- on	cross	cross	on	cross- on	cross- on	cross
High Tide / height (ft)	11:39PM 3.71	12:11PM 4.17		12:25AM 3.48	12:56PM 4.07		1:14AM 3.31	1:44PM 4		2:09AM 3.22		2:38PM 4	3:09AM 3.22		3:37PM 4.1	4:12AM 3.35		4:36PM 4.3		5:10AM 3.61	5:30PM 4.56
Low Tide / height (ft)		5:24AM 0.75	6:10PM 1.05		6:01AM 0.98	7:08PM 1.21		6:53AM 1.21		8:17PM 1.25	8:06AM 1.28		9:22PM 1.15	9:16AM 1.21		10:17PM 0.92	10:15AM 0.98		11:06PM 0.66	11:08AM 0.72

		Friday 29			Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03			Thu 04
Sunrise	-	6:16	-	-	6:16	-	-	6:18	-	-	6:18	-	-	6:20	-	-	6:20	-	-	6:22	-
Sunset	-	-	7:30	-	-	7:29	-	-	7:27	-	-	7:24	-	-	7:23	-	-	7:22	-	-	7:21

Rain (in)	0.1	0.1	0.0	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.0
Temp. °F	72	70	73	72	64	70	70	68	73	70	68	70	68	68	70	66	66	68	66	68	70
Feels °F (?)	63	66	70	64	59	64	64	64	70	66	64	66	66	66	66	64	64	66	68	64	66

Days 7-12 Weather Summary

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Recent Eyeball Surf Reports for Long Island NY

Wind Update The wind is still cross-on at Robert Moses State Park (moderate winds from the S at Farmingdale Airport 11 miles from Robert Moses State Park). 3ft 4s local chop from the SSW with a 1ft 8s swell from the SE. 2 swells combining to make bigger set waves.
2 hours 20 minutes ago Robert Moses State Park

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18 km away, 2 h 20 min ago

15 mph

0.0

22.5

Air / Water (°C)

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Information about the Robert Moses State Park Surf forecast

The above surf forecast table for Robert Moses State Park provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Robert Moses State Park can be found by selecting the local surf guide option on the grey menu. Our Robert Moses State Park surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Robert Moses State Park) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Robert Moses State Park may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Robert Moses State Park is 10 km (6 miles) from West Islip. If you plan a vacation in Long Island New York, look for hotels and other accommodation in West Islip. West Islip has rooms for a wide range of budgets as well as car hire and transport links.