Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 1 pm 15 Jul 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
20.1° C
0.8° 

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 16 Jul 2026:

  • Best quality surf: Sunday 19 Jul, 11PM (local time) - 5.5ft (1.7m), 8s period, SSW swell with offshore winds.
  • Most powerful swell: Sunday 19 Jul, 5PM (local time) - 7ft (2.1m), 8s period, SSW swell with 493 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 11PM (local time) - 5.5ft (1.7m), 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 1.7m 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 2.1m 8s and forecast to arrive on Sunday (Jul 19) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Jul 15) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 19th Jul)5.5ft (1.7m) 8s
Best Surf11PM (Sun 19th Jul)5.5ft (1.7m) 8s
Most Powerful 5PM (Sun 19th Jul)7ft (2.1m) 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 next couple of weeks are a real mixed bag and not a lot of it is tap-worthy. We’ve got a long stretch of poor conditions lined up, with just a couple of windows that might be worth paddling out for. The island’s best bet is the point break at *Block Island*, which is exposed to the south-east and needs a good swell to bend in. It’s a fickle spot that rarely breaks, so when it does, it’s a bit of an event.

The water temperature is sitting at 68°F right now, which is about 1°F cooler than average for this time of year. Nothing to write home about, just a touch on the fresh side.

The first real chance of anything decent comes on Sunday the 19th. Friday and Saturday are a total write-off with tiny waves and onshore junk. But Sunday morning shows a clean picture with a cross-off breeze from the west, and the swell is starting to push up. We’re seeing a 7ft swell from the SSW, with a combined energy of (385) – that’s solid, moderate energy. The period is a short 7 seconds, so it’s windswell, not the cleanest groundswell, but the wind is good. Sunday afternoon gets even better: 7ft from the SSW, period up to 8 seconds, energy cranking to (499), and still a clean cross-off breeze. This is the standout of the whole forecast. The place is exposed, so it’ll be handling that size, but with the wind, it should be linking up. It’s a point break, so it should handle the shorter period better than a beach. It’s rarely breaking, so you better be ready to go when it’s on. Crowds are often an issue here, so expect company.

Monday the 20th is still hanging in there, but it’s a step down. Morning sees a 5ft swell from the south with a much better 9-second period, energy at (422), but the wind is a light cross-on from the SW. It’s marginal, with a score that says it’s touch and go. The afternoon gets messier with a cross-shore chop.

After that, it’s a long, painful grind. From Tuesday the 21st right through to the end of the month, it’s all “poor surf conditions.” The winds are mostly onshore or cross-shore, with a couple of clean windows on the 22nd and 26th-27th where the wind goes cross-off, but the swell is tiny – barely 2ft to 4ft, with weak energy. There’s a pulse on the 30th with a 4ft, 9-second swell from the south and energy of (288), but the wind is cross-on, so it’s choppy. That’s not worth getting excited about.

So, the bottom line: if you want a wave, your only real shot is Sunday July 19th, with the morning being clean and the afternoon having a bit more push. After that, it’s a lot of waiting for a long time. The forecast is reliable for the first week, but the second week is a dust bowl.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 32°C on Wed afternoon, min 21°C on Fri morning). Winds decreasing (fresh winds from the SW on Thu afternoon, calm by Fri morning).

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Sat afternoon. Warm (max 26°C on Sun afternoon, min 19°C on Sat afternoon). Winds decreasing (fresh winds from the S on Sat night, calm by Mon morning).

Wed
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
6
0.8
SSW
6
0.8
SSW
6
1.2
SW
5
0.8
SSW
6
0.8
SSW
6
0.6
SSW
6
0.7
SSW
6
0.7
S
5
0.6
S
5
2.1
SSW
7
2
SSW
7
2.1
SSW
8
1.6
SSW
9
1.6
S
9
1.5
S
9
1.3
S
9
1
SSW
8
1.2
S
8
1.4
S
7
1.2
S
7
Wave Graph
Metric surfscale
Energy kJ
156
46
44
65
40
37
27
34
25
16
418
378
493
394
422
388
257
144
177
206
142
Wind (km/h)
20
WNW
5
NNW
20
WSW
30
SW
15
NNW
5
WSW
25
SSW
15
WSW
30
WSW
35
S
30
WSW
35
W
30
WNW
15
NNW
5
SW
20
SW
20
SW
20
S
15
SE
25
N
15
ENE
Wind State
cross-off
off
cross
cross
off
glassy
cross-on
cross
cross
on
cross
cross-off
cross-off
off
cross-on
cross
cross-on
cross-on
on
cross-off
cross-off
High Tide
9:34PM1.10m
10:03AM0.99m
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
Low Tide
3:06PM-0.07m
4:10AM-0.07m
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
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
light rain
rain showers
clear
clear
clear
clear
part cloud
part cloud
part cloud
rain showers
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
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
8:16
8:15
8:15
8:15
8:14
8:13
8:12
 mm
4
2
10
6
Temp °C
32
31
25
27
28
23
25
24
23
20
22
23
26
25
21
22
23
23
22
22
20
Feels °C
29
28
23
22
26
22
20
19
22
16
20
19
22
23
20
20
20
22
22
24
20
  • 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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