Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 7 pm 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
19.5° C
1.8° 

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: Thursday 23 Jul, 2AM (local time) - 7.5ft (2.3m), 9s period, S swell with offshore winds.
  • Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 10ft (3.0m), 9s period, SSW swell with 1,497 kJ wave energy.
  • Next surfable swell (1★+): Thursday 23 Jul, 2AM (local time) - 7.5ft (2.3m), 9s 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 Thursday (Jul 23) at 2AM. The primary swell is predicted to be 2.3m and 9s 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 3.0m 9s and forecast to arrive on Wednesday (Jul 22) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Jul 23) at 8AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 23rd Jul)7.5ft (2.3m) 9s
Best Surf 2AM (Thu 23rd Jul)7.5ft (2.3m) 9s
Most Powerful11PM (Wed 22nd Jul)10ft (3.0m) 9s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it for Block Island. Look, I’ll be straight with you – the next couple of weeks are a bit of a tough watch. The forecast is a real mixed bag of lumpy, wind-affected swell and long flat spells. This isn’t going to be a classic run of waves, but there are a couple of moments that could just about work if you’re desperate.

The first real chance of anything surfable doesn't come until Thursday the 22nd of July, but even then, it’s a mess. We’ve got a solid 10ft swell from the SSW pushing through the morning, but the wind is a fresh cross-onshore, making it lumpy and pretty poor. The energy is strong (1169), but the conditions just aren’t there for a good paddle. By the afternoon, the wind drops a touch, but it’s still cross-on and choppy, with the swell down to 8ft. Honestly, this is a day for the kite crew, not the surfer.

Things go quiet for a while after that. We’ve got a long stretch of small, weak, and wind-affected slop from the 23rd of July right through to the end of the month. The swell is tiny, the energy is pathetic – often under 100 – and the wind is mostly onshore or cross-shore. It’s a real grind. Block Island is a point break that rarely breaks, so this is pretty normal for the area when the conditions aren't perfect. Just small, bumpy stuff that’s not worth suiting up for.

Now, there is one tiny glimmer. On the morning of Saturday the 1st of August, we get a bit of a window. The swell is a modest 4ft from the S, with an 8-second period. The energy is moderate (242). But the real story is the wind: it’s a complete glass-off. The wind is calm, and the forecast says "glassy" conditions. For a spot that’s often plagued by wind, this is a major positive. The comment says "expect good surf conditions," which is the best we’ve seen all outlook. If you are a beginner, a 4ft long-period swell like this (8 seconds isn't super long, but it's alright) can be fun, but anything over 5ft is getting big for you, so this is just below that. It’s a stand-out simply because it’s the only clean session in a sea of junk. Expect crowds, as it’s a popular spot that’s often packed.

The clean spell doesn't last. By Saturday afternoon, the wind swings back onshore, and the chop returns. The rest of the second week from the 2nd of August onwards is a total write-off. Swell drops to under 3ft, the energy is pitiful (well under 100), and the wind is back onshore. It’s a flat, blank run to finish the forecast.

So, the best bet is a very early session on the morning of the 1st of August if you can get a pass for the crowds. Everything else is a miss. Keep your hopes up for the long-range; for Block Island, this kind of dry spell happens.

Rusty.

Short Range Forecast

Moderate rain (total 19mm), heaviest on Tue night. Warm (max 26°C on Wed night, min 17°C on Wed night). Winds increasing (light winds from the SSW on Mon night, strong winds from the SSW by Tue night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 21°C on Sun afternoon, min 17°C on Sat night). Wind will be generally light.

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
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
3
1
0
2
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)
0.7
SSW
7
1
S
7
1.5
S
6
3
SSW
8
3
SSW
8
2.3
SSW
8
2.3
S
9
1.7
S
8
1.2
SSW
8
1.2
S
8
0.9
SSW
8
0.8
SE
7
0.8
SE
8
0.7
SE
7
1
SE
7
0.9
SE
7
0.8
SE
8
0.8
SE
8
0.8
SE
8
Wave Graph
Metric surfscale
Energy kJ
54
97
139
906
1169
758
854
401
197
195
96
64
67
51
99
89
75
71
67
Wind (km/h)
20
S
25
SSE
35
SSE
40
SSW
35
SW
25
SSW
20
NNW
20
NE
20
SE
5
NNE
10
E
15
SE
10
E
20
ENE
20
ESE
15
NE
20
ENE
10
SSE
10
WSW
Wind State
cross-on
on
on
cross-on
cross-on
cross-on
off
cross-off
on
glassy
cross-on
cross-on
cross
cross
cross-on
cross-off
cross
on
cross
High Tide
1:44AM0.71m
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
Low Tide
8:13PM0.18m
8:00AM0.14m
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
clear
part cloud
light rain
thunderstorm
thunderstorm
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:33
5:33
5:33
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:13
8:12
8:12
8:10
8:09
8:08
 mm
2
15
2
Temp °C
22
21
22
23
23
24
26
19
20
20
20
20
19
19
20
20
20
21
21
Feels °C
20
19
19
21
22
23
25
16
17
20
18
18
16
16
17
18
17
20
21
  • Map Icons:
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  • 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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