Fortress Surf Forecast

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

USA (1297 breaks) / Lat Long: (41.02° N 71.96° W)

Surf Forecasts:

Fortress surfForecast / Long Island NY / USA

12 Day Weather and Surf, issued 7 am Tuesday 02 Sep 2025 EDT

Forecast update in hr min s Forecast update imminent

Fortress surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Fortress sea temperature is 20.6° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Fortress this week:

The surf forecast for Fortress over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 03) at 2AM. The primary swell is predicted to be 1.0m and 8s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Fortress in the next 12 days are 1.5m 6s and forecast to arrive on Saturday (Sep 06) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Sep 08) at 5AM.

Wave Type	Time (EDT) & Date	Wave Height & Period
Next good surf (1 star+)	2AM (Wed 3rd Sep)	3.5ft (1.0m) 8s
Best Surf	2AM (Wed 3rd Sep)	3.5ft (1.0m) 8s
Most Powerful	2AM (Sat 6th Sep)	5ft (1.5m) 6s

Table - best surf conditions forecast for Fortress over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Mostly dry. Warm (max 21°C on Thu afternoon, min 18°C on Tue morning). Winds increasing (calm on Tue night, fresh winds from the SSW by Thu night).									Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sat night. Warm (max 23°C on Fri night, min 17°C on Sun morning). Winds decreasing (strong winds from the SSW on Fri night, light winds from the WNW by Sun morning).
	Tuesday 02			Wednesday 03			Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	1	0	0	1	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	SE	SE	ESE	ESE	S	S	S	S	S	S	S	S	S	SE	S	SE
Period(s) (?)	6	8	8	8	8	7	8	7	8	5	5	6	6	6	6	6	6	6	8	7	9
Wave Graph (?)
Energy (?)	64	130	122	95	94	51	50	36	80	77	95	191	126	145	126	88	74	38	49	58	27
Wind (km/h)	ENE	ESE	SSE	E	SSE	SW	S	S	SSW	SSW	SSW	SSW	SSW	SW	NW	WNW	SW	N	NW	SW	W
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	on	glass	on	cross- on	cross- off	cross- on	cross	cross	cross	cross	cross	cross	cross- off	cross- off	off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)		4:08PM 0.74	4:25AM 0.59		5:22PM 0.79		5:47AM 0.66	6:11PM 0.84		6:36AM 0.74	6:53PM 0.90		7:18AM 0.83	7:34PM 0.94		7:58AM 0.92		8:16PM 0.96	8:39AM 0.99		8:58PM 0.96
Low Tide / height (m)	8:54AM 0.27		10:55PM 0.24	10:09AM 0.24		11:41PM 0.18	11:16AM 0.19		12:20AM 0.10	12:11PM 0.12		12:56AM 0.03	1:01PM 0.05		1:33AM -0.03	1:48PM -0.01		2:11AM -0.07		2:35PM -0.05	2:50AM -0.09

	Tuesday 02			Wednesday 03			Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08
Sunrise	6:13	-	-	6:15	-	-	6:16	-	-	6:16	-	-	6:18	-	-	6:18	-	-	6:20	-	-
Sunset	-	7:19	-	-	7:16	-	-	7:15	-	-	7:14	-	-	7:12	-	-	7:10	-	-	7:08	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	1	-	-	3	-	-	-	-	-	-
Temp. °C	18	19	19	18	19	19	19	21	21	22	22	23	22	23	22	18	22	22	17	20	19
Feels °C (?)	16	17	17	17	18	17	19	19	19	21	20	18	21	22	21	16	16	17	14	16	15

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Long Island NY

Wind Update Continuing clean conditions at Fortress (light winds from the NE at Montauk Airport 6 km from Fortress). 0.6m 6s windswell from the ESE with a 0.3m 8s swell from the SE and a 0.3m 2s local chop from the NE. 3 swells combining to make bigger set waves.
1 hour 56 minutes ago Fortress

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1 h 56 min ago

7 km/h

Clean

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Fortress surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Information about the Fortress Surf forecast

The above surf forecast table for Fortress provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Fortress can be found by selecting the local surf guide option on the grey menu. Our Fortress 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 (Fortress) 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 Fortress 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.

Fortress is 39 km (24 miles) from New London. If you plan a vacation in Long Island New York, look for hotels and other accommodation in New London. New London has rooms for a wide range of budgets as well as car hire and transport links.