Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 1 pm 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
19.3° C
2.0° 

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 21 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 11PM (local time) - 8ft (2.5m), 9s period, SSW swell with offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 5AM (local time) - 10ft (3.0m), 8s period, SSW swell with 1,118 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 22 Jul, 11PM (local time) - 8ft (2.5m), 9s period with SSW 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 Wednesday (Jul 22) at 11PM. The primary swell is predicted to be 2.5m and 9s period with a secondary swell of 2.3m and 9s. 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 3.0m 8s and forecast to arrive on Tuesday (Jul 28) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Saturday (Jul 25) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 22nd Jul)8ft (2.5m) 9s
Best Surf11PM (Wed 22nd Jul)8ft (2.5m) 9s
Most Powerful 5AM (Tue 28th Jul)10ft (3.0m) 8s

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


The Lowdown

Alright, this is Rusty. Let's take a look at what's on offer for Block Island.

First up, the water temperature is running about 19°, which is a bit colder than we'd expect for this time of year, so don't be fooled by a hot day – you'll want a decent spring suit.

Alright, let's be straight with you. The next few days are a write-off. We've got a messy, lumpy, wind-whipped ocean from Tuesday afternoon through to the end of July. The wind is just constantly on it or cross-onshore, and the swell is either too short-period or just straight-up ugly. There's a moment on Thursday morning, July 23rd, where the wind goes light and cross-offshore, and the swell is a clean 5 ft from the south, but it's scored as marginal. It's a maybe, but I wouldn't bet the house on it.

The real story here is a long wait. We're looking at a gap of several days with nothing worth paddling out for. The only flicker of hope comes on Tuesday the 28th of July. The afternoon sees a 7 ft south swell with a 9-second period, and the wind swings to a cross-offshore. The energy is moderate (603), and the conditions are clean. That's your first real window, but it's still only a 2 out of 10, and the morning before it is completely blown out with a near gale. It's a gamble.

The standout in this whole 16-day window, by a long shot, is Wednesday morning, July 29th. We've got a 4 ft south swell (7-second period), but the wind is light and cross-offshore from the WNW. The conditions are clean, and the energy is moderate (226). For a spot that rarely breaks, this is a golden moment. Block Island is a point break, and it's exposed to the swell, so when it gets that clean, light wind, it can be magic. Be aware though, it's a spot that rarely breaks, so this is a special treat. The downside is that it's a slow, inconsistent wave, so don't expect a packed lineup, but crowds are often around here.

After that, it's back to the grind. A few more days of onshore wind and poor surf. There's another chance on Saturday morning, August 1st, with a clean 5 ft south swell and a light cross-offshore breeze from the NE. The energy is moderate (316). But by afternoon, the wind turns onshore again.

The last week of the forecast is a total desert. Swell drops to nothing, and the wind is either onshore or cross. It's a dead zone.

So, bottom line: the best on offer is that Wednesday morning, July 29th. It's a rare, clean window at a rarely-breaking point. The Thursday morning on the 23rd is a distant second, but it's a gamble. For the rest, you're better off waiting for the next forecast.

Rusty.

Short Range Forecast

Heavy rain (total 20mm), heaviest during Tue afternoon. Warm (max 26°C on Wed night, min 18°C on Wed night). Winds decreasing (strong winds from the SW on Tue night, calm by Thu night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Sat afternoon, min 16°C on Sat night). Winds decreasing (fresh winds from the NE on Sat morning, calm by Sun morning).

Tue
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
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
3
1
0
1
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)
1.8
S
6
1.7
SSW
7
2.3
SSW
8
2.5
SSW
9
2.1
S
9
1.6
S
8
1.2
SSW
8
1
SSW
8
0.7
SSW
8
1
ESE
6
1.2
ESE
6
1.4
E
6
1.4
E
6
0.8
SE
7
0.9
SE
7
0.8
SE
7
0.7
SE
7
1
SW
5
1.3
SSW
5
0.9
SW
6
Wave Graph
Metric surfscale
Energy kJ
245
268
671
1015
699
347
197
133
58
68
114
139
156
59
79
65
56
49
97
52
Wind (km/h)
30
SSW
45
SW
35
SW
30
SSW
20
NNW
15
NE
20
SSE
5
ENE
15
ENE
20
SE
20
NE
25
ENE
30
ENE
15
NNE
5
ENE
15
SSW
15
SW
20
SSW
25
SSW
20
S
Wind State
cross-on
cross
cross
cross-on
off
cross-off
on
glassy
cross
cross-on
cross-off
cross
cross
cross-off
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
2:35PM0.87m
2:44AM0.66m
3:35PM0.84m
3:48AM0.62m
4:34PM0.84m
4:50AM0.62m
5:29PM0.84m
5:46AM0.63m
6:20PM0.87m
6:36AM0.66m
7:04PM0.89m
7:22AM0.70m
7:44PM0.91m
Low Tide
9:16PM0.21m
8:51AM0.18m
10:16PM0.22m
9:47AM0.20m
11:12PM0.22m
10:41AM0.20m
00:03AM0.20m
11:33AM0.19m
00:49AM0.18m
12:20PM0.17m
1:30AM0.14m
1:04PM0.14m
2:08AM0.11m
mod rain
mod rain
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:33
5:33
5:33
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:13
8:12
8:12
8:10
8:09
8:08
8:07
 mm
10
10
Temp °C
22
23
22
24
26
20
22
20
20
21
20
20
22
21
18
21
21
22
22
22
Feels °C
19
21
18
22
25
17
20
18
18
18
17
16
17
17
17
18
18
21
20
20
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Block Island:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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 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.

Nearest locationNearest