Lighthouse-Southside Surf Forecast

/ Rhode Island (33 breaks) / Rhode Island (34 breaks) /

USA (1297 breaks) / Lat Long: (41.36° N 71.49° W)

Surf Forecasts

Lighthouse-Southside surfForecast / Rhode Island / USA

48hr Weather and Surf, issued 7 pm Sunday 17 Aug 2025 EDT

Forecast update in hr min s Forecast update imminent

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

Today's Lighthouse-Southside sea temperature is 21.8° C
(Which is normal for this time of year)

How big are the waves at Lighthouse-Southside today?

The current surf forecast for Lighthouse-Southside at 9PM is: 0.8m 4s primary swell from a South-southwest direction and 0.3m 10s secondary swell from a Southeast direction, 0.1m 13s secondary swell from a Southeast direction (forecast issued at 07:00pm August 17). The wind direction is predicted to be onshore.

Time (EDT) & Date	Wave Height	Wave Period
Morning (17 Aug)	-	-
Afternoon (17 Aug)	2.5ft (0.8m)	4s
Evening (17 Aug)	2.5ft (0.8m)	4s

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

Hourly 12 Days

Rhode Island Surf

Print Surf Table

Updates in hr min s Forecast update imminent

	Sunday 17			Monday 18								Tuesday 19								Wednesday 20
	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	2	1	2	1	2	1	2	3	3	4	4	3	3
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SW	SE	SE	SSE	SE	SSE	SSE	SSE	SE	SE	SE	S	SSE	S	S	S	S	SSE	S	SSE	SSE	SSE
Period(s) (?)	4	4	4	10	13	13	13	14	14	13	13	13	12	16	15	19	18	17	17	16	16	16	15	15
Wave Graph (?)
Energy (?)	51	47	71	42	53	90	111	129	137	142	185	202	197	285	431	501	693	742	1024	1825	1257	1622	1730	1685
Wind (km/h)	SSW	SW	WSW	NE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	NE	NE	E	ESE	SE	SE	SE	SE	ENE	E	ESE	ESE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	on	on	off	off	off	off	off	off	cross- off	cross- off	off	off	off	cross- off	cross- off	cross	cross	cross	cross	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)	3:22PM 1.08				3:51AM 0.81				4:27PM 1.09				4:56AM 0.84					5:29PM 1.11				5:56AM 0.90
Low Tide / height (m)			10:14PM 0.13				9:54AM 0.10					11:26PM 0.09				11:13AM 0.07				12:24AM 0.04				12:18PM 0.02

	Sunday 17			Monday 18								Tuesday 19								Wednesday 20
Sunrise	-	-	-	-	-	5:56	-	-	-	-	-	-	-	5:58	-	-	-	-	-	-	-	5:58	-	-
Sunset	7:42	-	-	-	-	-	-	-	7:40	-	-	-	-	-	-	-	7:39	-	-	-	-	-	-	-

Rain (mm)	-	4	5	2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	25	22	22	19	18	17	18	20	19	17	17	17	16	16	19	20	19	18	18	18	18	18	19	20
Feels °C (?)	25	23	23	15	13	11	12	14	13	12	12	13	13	12	15	16	16	15	15	16	17	17	17	18

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 Rhode Island

Wind Update The wind is still cross-on at Lighthouse-Southside (light winds from the SSW at BUOY-NWPR1 20 km from Lighthouse-Southside). 0.7m 4s local chop from the SSW with a 0.2m 10s swell from the SE. 2 swells combining to make bigger set waves.
1 hour 32 minutes ago Lighthouse-Southside

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20 km away, 1 h 32 min ago

15 km/h

SSW

0.0

21.8

Air / Water (°C)

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