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

48hr Weather and Surf, issued 7 pm Tuesday 16 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 20.4° C
(Which is slightly warmer than usual)

How big are the waves at Fortress today?

The current surf forecast for Fortress at 12AM is: 1.4m 7s primary swell from a East-southeast direction and 0.1m 8s secondary swell from a South direction (forecast issued at 07:00pm September 16). The wind direction is predicted to be cross-onshore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (17 Sep)	5ft (1.5m)	7s
Afternoon (17 Sep)	5ft (1.5m)	7s
Evening (17 Sep)	4.5ft (1.4m)	7s

Table - waves today at Fortress. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Tuesday 16			Wednesday 17								Thursday 18								Friday 19
	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	5 AM	8 AM	11 AM	2 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	0	1	0	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	SE	ESE	ESE	ESE	ESE
Period(s) (?)	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8
Wave Graph (?)
kJ (?)	186	203	197	208	214	249	242	236	242	214	183	151	131	120	108	98	101	74	74	59	51	51	42	43
Wind (km/h)	E	E	E	E	E	ENE	E	E	E	E	E	E	ENE	ENE	NE	NE	NE	WSW	WSW	W	W	NW	NW	W
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross	glass	cross- off	cross- off	cross- off	off	cross- off	off	cross- off
High Tide / height (m)	4:42PM 0.88					5:10AM 0.74				5:43PM 0.90				6:07AM 0.80				6:35PM 0.91				6:55AM 0.86
Low Tide / height (m)				11:06PM 0.12			10:52AM 0.15					11:55PM 0.09				11:50AM 0.11				12:36AM 0.06				12:38PM 0.07

	Tuesday 16			Wednesday 17								Thursday 18								Friday 19
Sunrise	-	-	-	-	-	6:28	-	-	-	-	-	-	-	6:30	-	-	-	-	-	-	-	6:31	-	-
Sunset	6:55	-	-	-	-	-	-	-	6:53	-	-	-	-	-	-	-	6:52	-	-	-	-	-	-	-

Rain (mm)	-	-	-	-	-	1	-	1	2	1	1	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	20	20	21	21	22	20	20	21	24
Feels °C (?)	13	14	13	14	14	13	14	14	16	16	17	18	18	18	19	21	23	23	21	21	19	18	19	23

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 The wind is still cross-on at Fortress (light winds from the ENE at Montauk Airport 6 km from Fortress). 1.3m 7s swell from the ESE to make surfable waves.
2 hours 9 minutes ago Fortress

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2 h 9 min ago

15 km/h

ENE

Cross-On

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