Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 1 pm 16 Jul 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
19.9° C
1.1° 

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 16 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 8PM (local time) - 6.5ft (2.0m), 9s period, S swell with glassy winds.
  • Most powerful swell: Wednesday 22 Jul, 8AM (local time) - 8ft (2.5m), 9s period, SSW swell with 1,033 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 11PM (local time) - 4.5ft (1.3m), 8s 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 Sunday (Jul 19) at 11PM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 12s. 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 2.5m 9s and forecast to arrive on Wednesday (Jul 22) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Jul 23) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 19th Jul)4.5ft (1.3m) 8s
Best Surf 8PM (Wed 22nd Jul)6.5ft (2.0m) 9s
Most Powerful 8AM (Wed 22nd Jul)8ft (2.5m) 9s

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


The Lowdown

Alright folks, Rusty here. Let's get into the Block Island outlook.

Honestly, the first week and a half is a write-off. The water is a bit colder than normal for July, sitting at about 68°F, which is a noticeable chill for the season. The first real swell worth paddling for doesn't show up until Sunday, July 19th. Before that, it's a long stretch of tiny, weak, messy waves with strong onshore winds. The only break we’ve got is Block Island, a point that rarely breaks, so when it does, it’s a special thing.

The standout window is Sunday, July 19th. The morning brings a solid 6ft swell from the SW with a clean cross-offshore breeze from the W. The wave energy is solid, and it's clean. The afternoon is even better, with the swell easing slightly to 6ft and the wind staying light and cross-off. This is the best of the 16-day window, no question. It’s a point, so it’ll handle the swell well. Just watch for the crowd.

Wednesday, July 22nd is a wild card. The swell jumps to 8ft from the SSW, but the morning is blown out by a near gale. The afternoon, though, the wind swings hard offshore from the NW, and while the swell drops to 8ft, the energy is massive. That’s a serious amount of water moving. This is expert-only territory—too big for most, and the crowd will be a factor. If you’re a pro, it’s worth a look.

The rest of the outlook is a mix of small, weak, and wind-affected waves. There’s a brief moment on Saturday, July 25th afternoon with a glassy 4ft swell from the SE, but it’s very ordinary. For the most part, the combination of small swell and poor wind means you’re better off keeping the board in the car. It’s a tough run, but it’s Block Island—it tends not to stay poor for long, and forecasts can change.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Sat night. Warm (max 26°C on Thu night, min 20°C on Fri morning). Winds increasing (light winds from the N on Thu night, strong winds from the SW by Sat night).

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Wed morning. Warm (max 27°C on Sun afternoon, min 18°C on Mon morning). Winds increasing (light winds from the SE on Mon morning, near gales from the SSW by Wed morning).

Thu
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
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
1
1
0
0
0
0
0
0
0
3
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
5
0.7
SW
5
0.6
SSW
5
0.6
SSW
6
0.7
SSW
6
0.6
SSW
5
0.7
SSW
4
1.4
SSW
5
1.8
SW
8
1.7
SSW
8
1.2
SSW
8
1.1
S
8
1.1
S
8
1.1
S
8
1
S
7
0.9
S
7
1.8
S
6
2.5
SSW
9
2.4
SSW
9
1.7
S
8
Wave Graph
Metric surfscale
Energy kJ
56
25
22
26
27
21
18
110
358
372
168
173
165
153
107
83
259
1027
878
392
Wind (km/h)
35
SW
10
N
10
W
25
SW
15
WSW
25
SSW
30
SSW
45
SW
25
W
20
W
20
NNW
5
SE
20
SSW
20
S
25
SSE
40
SSW
50
SSW
55
SSW
30
NW
25
NNW
Wind State
cross-on
off
cross-off
cross-on
cross
cross-on
cross-on
cross
cross-off
cross-off
off
on
cross-on
on
on
cross-on
cross-on
cross-on
off
off
High Tide
10:23PM1.05m
10:56AM1.00m
11:11PM0.97m
11:49AM0.98m
00:00AM0.88m
12:42PM0.95m
00:50AM0.79m
1:37PM0.91m
1:44AM0.71m
2:35PM0.87m
2:44AM0.66m
3:35PM0.84m
3:48AM0.62m
Low Tide
4:06PM-0.04m
4:57AM-0.05m
5:07PM0.01m
5:43AM-0.02m
6:08PM0.07m
6:28AM0.03m
7:10PM0.13m
7:13AM0.09m
8:13PM0.18m
8:00AM0.14m
9:16PM0.21m
8:51AM0.18m
10:16PM0.22m
clear
clear
part cloud
clear
clear
part cloud
light rain
light rain
clear
clear
clear
clear
clear
clear
part cloud
rain showers
rain showers
thunderstorm
heavy rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:28
5:28
5:30
5:31
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:16
8:15
8:15
8:15
8:14
8:13
8:12
 mm
1
5
1
1
4
22
2
Temp °C
25
26
22
25
25
23
22
23
22
27
25
21
21
21
22
24
25
24
23
20
Feels °C
21
24
19
19
21
21
20
20
21
24
20
19
17
18
21
21
19
19
16
17
  • 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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