Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 7 pm 08 Jul 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
19.7° C
0.4° 

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 9 Jul 2026:

  • Most powerful swell: Wednesday 15 Jul, 5AM (local time) - 5ft (1.6m), 6s period, SW swell with 184 kJ wave energy.

Best Forecast Surf Conditions for Block Island this week:

The most powerful waves expected at Block Island in the next 16 days are 1.6m 6s and forecast to arrive on Wednesday (Jul 15) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Jul 10) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Wed 15th Jul)5ft (1.6m) 6s

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


Right, folks, Rusty here. Let’s have a look at what’s on the cards for Block Island.

Honestly, I’m looking at the next two weeks and it’s a proper struggle. The first week and a half is a write-off for anything decent. From Thursday the 9th of July right through to Sunday the 19th of July, we’re looking at a solid gap of nothing but poor surf conditions. Tiny waves, short periods, and mostly cross or onshore wind. The energy is weak, with the combined swell energy sitting below 100 (66) for most of that time. There’s no point even thinking about a paddle.

Then, things start to look a bit more interesting around the 20th of July. Monday morning the 20th, we see a jump in swell to 6 ft from the SSW, pushing the combined energy up to 205, which is moderate. The wind is a clean cross-off from the NE, so it’ll be tidy at Block Island. That’s the best looking window in the whole run. The swell is a bit on the short period side at 6 seconds, so it won’t be the most powerful, but it’s a clean, surfable wave for the intermediate crowd. The water temp is about average for the time of year, so no need to worry about a major thermocline.

The 21st and 22nd of July keep the swell around 6 ft to 7 ft from the SSW, with moderate energy (341 up to 459). The period is still short at 7 seconds, so it’s a bit bumpy and wind-affected, but those morning sessions on the 21st look like they might be okay with a light breeze. Be aware that these bigger swells, over 5 ft, aren’t for beginners, and anything over 8 ft, which we don’t quite hit, would be experts only.

The standout for the whole period is Monday morning, July the 20th. It’s the most consistent call with clean conditions and a moderate swell. The rest of the time, it’s mostly a kite-surfing show if the wind picks up, especially on the afternoons with the choppy cross-onshore stuff.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu night. Warm (max 27°C on Fri afternoon, min 20°C on Sat morning). Winds decreasing (fresh winds from the SW on Thu afternoon, light winds from the W by Fri morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Sun afternoon, min 18°C on Sat night). Wind will be generally light.

Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wed
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
E
8
0.5
E
7
1.1
SW
5
1
SSW
5
0.7
SSW
6
0.8
SSW
6
0.8
SSW
7
0.8
SSW
7
0.7
SSW
7
0.6
SSW
7
0.6
SSW
7
0.5
SSW
7
0.3
SE
10
0.3
SE
9
0.5
SE
6
0.7
SE
7
0.7
SE
8
1.3
SW
5
1.6
SW
6
1.2
SW
6
1.1
SW
6
Wave Graph
Metric surfscale
Energy kJ
54
26
51
49
31
42
62
65
48
43
42
30
16
13
18
48
55
78
150
99
67
Wind (km/h)
25
WSW
25
SW
30
SW
15
SW
10
WSW
20
W
10
NW
15
ENE
20
E
20
NE
20
ENE
25
ESE
10
NE
15
E
10
SSE
15
SSW
15
SW
25
SSW
30
SW
30
SW
25
SW
Wind State
cross
cross
cross-on
cross-on
cross
cross-off
cross-off
cross
cross-on
cross-off
cross
cross-on
cross-off
cross
on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
High Tide
3:00AM0.72m
3:38PM0.97m
4:07AM0.72m
4:45PM1.02m
5:15AM0.75m
5:51PM1.08m
6:19AM0.80m
6:53PM1.12m
7:18AM0.85m
7:50PM1.15m
8:15AM0.91m
8:43PM1.14m
9:10AM0.96m
Low Tide
9:31PM0.14m
8:46AM0.05m
10:44PM0.11m
9:48AM0.03m
11:48PM0.07m
10:52AM-0.01m
00:47AM0.02m
11:58AM-0.05m
1:41AM-0.02m
1:02PM-0.08m
2:33AM-0.05m
2:05PM-0.09m
3:23AM-0.06m
3:06PM-0.07m
clear
clear
clear
rain showers
part cloud
cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:22
5:22
5:24
5:24
5:24
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:21
8:20
8:20
8:19
8:19
8:17
8:17
8:16
 mm
1
Temp °C
22
22
22
22
25
27
27
22
23
21
21
22
21
20
20
20
20
21
21
21
22
Feels °C
19
21
20
20
27
25
27
22
23
20
17
18
18
18
17
18
19
18
17
18
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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