Block Island Surf Forecast

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

USA (1297 breaks) / Lat Long: (41.15° N 71.59° W)

Surf Forecasts:

Block Island surfForecast / Rhode Island / USA

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

Forecast update in hr min s Forecast update imminent

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

Today's Block Island sea temperature is 20.0° C
(Which is slightly cooler than normal)

Best Forecast Surf Conditions for Block Island this week:

The most powerful waves expected at Block Island in the next 12 days are 1.6m 6s and forecast to arrive on Saturday (Sep 06) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Sep 08) at 8AM.

Wave Type	Time (EDT) & Date	Wave Height & Period
Next good surf (1 star+)	-	-
Best Surf	-	-
Most Powerful	8PM (Sat 6th Sep)	5ft (1.6m) 6s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Some drizzle, heaviest during Thu night. Warm (max 21°C on Thu night, min 17°C on Tue morning). Winds increasing (calm on Tue night, strong winds from the SSW by Thu night).									Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sat night. Warm (max 22°C on Fri morning, min 16°C on Sun morning). Winds decreasing (strong winds from the S on Fri night, light winds from the W 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	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 (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	SE	SE	SE	SE	SSW	S	SSW	SSW	SSW	S	SSE	SE	S	S	S	SE
Period(s) (?)	7	8	8	8	7	7	7	8	7	5	5	6	6	6	6	6	9	6	9	8	9
Wave Graph (?)
Energy (?)	104	153	130	93	79	62	54	52	47	88	118	220	156	180	173	89	65	55	61	72	42
Wind (km/h)	ENE	ESE	SE	E	S	WSW	S	SSW	SSW	SSW	SSW	SSW	SSW	SSW	NW	W	SW	N	NW	SW	WSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross- on	glass	cross- on	on	cross	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- off	cross- off	cross	off	off	cross- on	glass
High Tide / height (m)		4:49PM 0.79		5:08AM 0.66	5:37PM 0.83		5:59AM 0.73	6:19PM 0.89		6:43AM 0.81	6:58PM 0.94		7:23AM 0.90	7:38PM 0.99		8:03AM 0.98		8:19PM 1.01	8:43AM 1.05		9:02PM 1.01
Low Tide / height (m)	9:43AM 0.24		11:27PM 0.22	11:00AM 0.21		12:09AM 0.16	11:55AM 0.16		12:46AM 0.09	12:42PM 0.10		1:20AM 0.03	1:27PM 0.04		1:52AM -0.02		2:11PM -0.01	2:25AM -0.05		2:56PM -0.04	2:59AM -0.07

	Tuesday 02			Wednesday 03			Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08
Sunrise	6:13	-	-	6:13	-	-	6:15	-	-	6:16	-	-	6:16	-	-	6:18	-	-	6:18	-	-
Sunset	-	7:17	-	-	7:15	-	-	7:14	-	-	7:13	-	-	7:10	-	-	7:08	-	-	7:07	-

Rain (mm)	-	-	-	-	-	-	-	-	1	-	-	1	-	-	3	-	-	-	-	-	-
Temp. °C	18	19	19	18	19	19	19	20	21	22	22	22	22	22	22	18	21	21	18	19	20
Feels °C (?)	16	18	17	18	18	18	18	18	19	21	21	18	21	21	21	16	15	16	15	15	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-off at Block Island (light winds from the NNE.(Wind varies from 003 to 006 degs) at Block Island Airport 3 km from Block Island). 0.8m 6s windswell from the ESE with a 0.2m 8s swell from the SE. 2 swells combining to make bigger set waves.
1 hour 10 minutes ago Block Island

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1 h 10 min ago

15 km/h

NNE

Cross-Off

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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 Block Island 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 Block Island Surf forecast

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

Block Island is 33 km (20 miles) from Westerly. If you plan a vacation in Rhode Island, look for hotels and other accommodation in Westerly. Westerly has rooms for a wide range of budgets as well as car hire and transport links.