Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 7 pm 03 Aug 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
20.5° C
1.5° 

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


Block Island surf forecast from 4 Aug 2026:

  • Best quality surf: Tuesday 4 Aug, 5AM (local time) - 6ft (1.8m), 8s period, S swell with offshore winds.
  • Most powerful swell: Tuesday 4 Aug, 5AM (local time) - 6ft (1.8m), 8s period, S swell with 432 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 4 Aug, 5AM (local time) - 6ft (1.8m), 8s period with S swell.

Best Forecast Surf Conditions for Block Island this week:

The surf forecast for Block Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 5AM. The primary swell is predicted to be 1.8m and 8s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Block Island in the next 16 days are 1.8m 8s and forecast to arrive on Tuesday (Aug 04) at 5AM. Winds are predicted to be offshore at the time the swell arrives.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 4th Aug)6ft (1.8m) 8s
Best Surf 5AM (Tue 4th Aug)6ft (1.8m) 8s
Most Powerful 5AM (Tue 4th Aug)6ft (1.8m) 8s

Table - best surf conditions forecast for Block Island over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Block Island.

To be straight with you, the outlook for the next couple of weeks is pretty bleak. We’ve got a real dry spell on our hands. The first surfable day that even shows a pulse is Tuesday, August 4th, but don’t get your hopes up too high. After that, the whole forecast is a long stretch of small, weak, and choppy slop. There’s a solid gap from Wednesday afternoon, August 5th, all the way through to Sunday, August 16th, where the ratings are just flat-out poor. It’s the kind of run where you’re better off checking the wind forecast for kites.

The only real standout, and I mean the *only* one, is the early morning of Tuesday, August 4th at Block Island. It’s a point break that rarely works, so when it does, you pay attention. We’re looking at a 5ft swell coming out of the S, with a period of 8 seconds. That’s a short, weak wave, but the combined energy of all swells is moderate (316). The real kicker here is the wind: glassy, 3 mph from the W. That’s the kind of calm that turns a so-so wave into a velvet ride. It’s going to be clean, and for a spot that’s this inconsistent, it’s a gift. The water temp is about average for this time of year, nothing wild. Just keep in mind, crowds are likely at this spot, so you’ll have to get in the water early.

After that Tuesday morning window, it falls apart. The wind swings to the south and picks up, the swell drops, and the quality goes straight into the bin. We get a few mornings with clean conditions, like Thursday, August 13th, where the wind is offshore from the NE, but the swell is a measly 3ft with a short period. It’s just not enough to push anything decent. There’s a small window on Sunday, August 16th, late in the afternoon with glassy conditions and a 3ft SSW swell, but it’s only 5 seconds of period – that’s windswell, full stop. Not worth paddling out for.

Honestly, if you’re not out there on the morning of August 4th, you’re probably looking at two weeks of flat, choppy, or blown-out water. The break is a point, so it needs a clean entry, and the south swells we’re seeing are mostly all cross or onshore. The setup is more interesting for kite surfing than paddle surfing on most of these days. Keep your board waxed and hope the next forecast cycle brings something better.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon night. Warm (max 26°C on Thu afternoon, min 20°C on Mon night). Winds decreasing (fresh winds from the SW on Mon night, calm by Tue morning).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Fri night. Warm (max 28°C on Fri afternoon, min 24°C on Thu night). Wind will be generally light.

Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
S
8
1.5
S
8
1
SSW
8
0.8
SSW
7
0.9
S
7
0.7
SSW
7
0.7
SSW
6
1.2
SSW
6
1.2
SSW
6
1.1
SSW
6
1
SSW
6
1
SSW
6
1.3
SSW
6
1.1
SSW
6
1
SSW
6
1.2
SSW
6
0.9
SSW
6
1
SSW
6
1
SSW
6
Wave Graph
Metric surfscale
Energy kJ
552
277
120
69
83
48
40
112
100
88
72
75
118
90
80
121
72
78
82
Wind (km/h)
15
NW
5
W
15
S
5
N
15
SW
15
SSW
15
SW
20
SW
25
SW
20
WSW
20
SW
25
SW
15
W
15
WSW
25
SW
15
SW
10
SW
25
SSW
25
SW
Wind State
cross-off
glassy
cross-on
glassy
cross
cross-on
cross
cross-on
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross
cross
cross-on
cross
High Tide
11:50PM0.83m
12:17PM0.93m
00:39AM0.78m
1:08PM0.94m
1:35AM0.74m
2:09PM0.95m
2:40AM0.71m
3:20PM0.97m
3:52AM0.71m
4:35PM1.00m
5:04AM0.75m
5:43PM1.04m
Low Tide
5:39AM0.06m
6:38PM0.14m
6:24AM0.07m
7:51PM0.16m
7:16AM0.08m
9:20PM0.16m
8:19AM0.08m
10:36PM0.14m
9:31AM0.06m
11:40PM0.10m
10:49AM0.03m
00:36AM0.05m
thunderstorm
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
rain showers
part cloud
clear
thunderstorm
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:45
5:46
5:47
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
7:59
7:58
7:57
7:55
7:54
7:52
 mm
4
1
2
Temp °C
23
23
24
24
24
24
24
25
26
26
25
28
27
26
27
26
26
27
25
Feels °C
21
24
22
22
22
22
25
26
26
26
26
28
27
28
26
25
28
27
25
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 16 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.

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