Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 1 am 24 Jul 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
19.7° C
1.7° 

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 24 Jul 2026:

  • Best quality surf: Thursday 30 Jul, 11AM (local time) - 2.5ft (0.8m), 10s period, SSE swell with glassy winds.
  • Most powerful swell: Thursday 30 Jul, 2PM (local time) - 4.5ft (1.4m), 10s period, SSE swell with 385 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 11AM (local time) - 2.5ft (0.8m), 10s period with SSE 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 Thursday (Jul 30) at 11AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.7m and 8s. Another secondary swell of 0.7m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Block Island in the next 16 days are 1.4m 10s and forecast to arrive on Thursday (Jul 30) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Sunday (Jul 26) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Thu 30th Jul)2.5ft (0.8m) 10s
Best Surf11AM (Thu 30th Jul)2.5ft (0.8m) 10s
Most Powerful 2PM (Thu 30th Jul)4.5ft (1.4m) 10s

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


The Lowdown

Alright folks, it’s Rusty here, and I’m looking at a pretty grim stretch ahead for Block Island. This is a classic summertime lull, and it’s gonna be a long wait for anything worth paddling out for.

Looking at the whole 16-day window, I gotta be straight with you – there’s nothing on the cards for the first two weeks. From July 24th right through to August 6th, it’s a desert. We’re talking about a solid 14-day gap with no decent surf. The swell is tiny, the wind is all wrong, and every single session gets flagged as poor surf conditions. You’ll see a few scraps of energy around 2ft to 4ft, but with short period (7-8 seconds) and cross-shore or onshore winds, it’s just not gonna happen. The combined energy barely cracks triple digits on a few days, hitting a max of 210 (moderate) on the morning of July 30th, but even then the wind is a cross-off and the rating is a zero. It’s just not worth the drive.

Now, finally, on August 7th, Friday morning, we get a flicker of hope. The swell picks up to 6ft from the SSW, and here’s the kicker – the wind is glassy, calm, zero. That’s a huge positive. The combined energy jumps to 311 (moderate), and the forecast actually says “expect good surf conditions.” That’s the only standout in the whole run. But, and it’s a big but, that swell is only 7 seconds, so it’s short-period windswell, not a groundswell. It’ll be a bit crumbly, but with glassy conditions, Block Island’s point break should have some fun, rideable waves. The water temperature is about average for this time of year, so no crazy surprises there.

Because it’s so far out, treat this August 7th call as promising but not locked in. The afternoon of the 7th gets messy again with a cross-onshore wind, so if you’re going, be on the water first thing. Before that, save your petrol.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Fri morning, min 16°C on Sat night). Winds increasing (light winds from the ESE on Fri morning, fresh winds from the ENE by Sun afternoon).

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Wed night. Warm (max 23°C on Wed afternoon, min 18°C on Mon morning). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
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
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SSW
7
0.5
SSW
7
0.8
SE
7
1.1
ESE
7
1.2
ESE
7
1.2
ESE
7
0.7
SE
8
0.7
SE
8
0.7
SE
8
0.6
SE
8
0.6
SE
7
0.7
SE
7
0.9
SSE
8
1.3
S
7
1.1
S
6
1.1
S
7
1.1
S
6
0.6
S
6
0.8
SSE
10
1.4
SSE
10
1.3
S
9
Wave Graph
Metric surfscale
Energy kJ
37
26
77
113
125
124
61
60
57
45
44
54
103
183
75
104
100
27
135
348
270
Wind (km/h)
5
ESE
15
SE
10
ENE
20
ENE
20
ESE
20
NNE
20
NE
30
ENE
15
NNE
5
ENE
15
S
10
S
20
SSE
20
SSE
15
S
15
SE
15
S
15
SE
5
NE
10
NNW
20
NNE
Wind State
cross-on
on
cross
cross
cross-on
cross-off
cross-off
cross
cross-off
glassy
cross-on
cross-on
on
on
on
on
cross-on
cross-on
glassy
off
cross-off
High Tide
5:29PM0.84m
5:46AM0.63m
6:20PM0.87m
6:36AM0.66m
7:04PM0.89m
7:22AM0.70m
7:44PM0.91m
8:03AM0.75m
8:20PM0.92m
8:42AM0.79m
8:52PM0.93m
9:17AM0.82m
9:22PM0.93m
Low Tide
10:41AM0.20m
00:03AM0.20m
11:33AM0.19m
00:49AM0.18m
12:20PM0.17m
1:30AM0.14m
1:04PM0.14m
2:08AM0.11m
1:45PM0.12m
2:43AM0.07m
2:24PM0.11m
3:15AM0.05m
3:01PM0.11m
3:42AM0.04m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
rain showers
heavy rain
light rain
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:33
5:35
5:35
5:37
5:37
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:10
8:09
8:08
8:07
8:07
8:06
8:05
 mm
1
11
3
Temp °C
21
21
20
19
20
20
19
21
20
19
21
21
21
22
22
22
23
22
21
22
21
Feels °C
20
19
17
16
17
17
17
20
18
21
22
21
21
22
22
22
24
25
24
23
21
  • 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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