Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 1 pm 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
20.5° C
1.4° 

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 7 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 8AM (local time) - 4.5ft (1.3m), 7s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 9 Aug, 5AM (local time) - 5ft (1.5m), 7s period, SSW swell with 192 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 8AM (local time) - 4.5ft (1.3m), 7s 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 (Aug 09) at 8AM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.3m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Block Island in the next 16 days are 1.5m 7s and forecast to arrive on Sunday (Aug 09) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 12) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 9th Aug)4.5ft (1.3m) 7s
Best Surf 8AM (Sun 9th Aug)4.5ft (1.3m) 7s
Most Powerful 5AM (Sun 9th Aug)5ft (1.5m) 7s

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


The Lowdown

Alright folks, Rusty here. Let me level with you straight up – we're looking at a flat spell for Block Island. I'm not gonna sugarcoat it. The first recommendation doesn’t even show up until late in the game, and it’s a real stretch.

Right out the gate, we're in a drought. From now until the 19th of August, there isn't a single day worth paddling out. That's near enough to two weeks of nothing doing. You'll see tiny swells in the 1ft to 4ft range passing through, but the wind is all wrong – mostly cross or cross-onshore, creating chop and lumpy conditions. The water is hanging around 69°F at the start, which feels a bit colder than normal for this time of year, but with no waves, you’re not missing much.

The only glimmer – and I mean a faint one – is on Wednesday the 19th. We finally get a pulse of clean surf at Block Island. For the morning and afternoon, the swell pushes up to 5ft out of the SSW, with a short period of 6 seconds. Now the energy is moderate, but the wind is a clean, cross-offshore breeze from the WNW and W. That means the surface will be smooth and glassy. It’s a rare break here, and crowds are often an issue, so get there early if you're keen on a few clean, short-period lines. Just know, at 5ft, it might be pushing it for total beginners.

Besides that one day, the last few days of the window taper right back off into tiny, weak surf. We’re looking at a classic summer flat spell for Block Island. Keep your eye on the forecasts, but for now, it’s a waiting game.

Rusty

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 28°C on Fri afternoon, min 22°C on Sat morning). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 29°C on Sun afternoon, min 23°C on Tue night). Wind will be generally light.

Thu
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
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
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)
1
SSW
5
1.4
SSW
6
1
SSW
6
0.9
SSW
6
1.2
SW
6
1
SSW
6
1.2
SSW
6
1.4
SSW
6
1.3
SSW
7
1.2
SSW
6
0.9
SSW
6
0.7
SSW
6
0.7
SSW
6
0.9
SSW
5
1
SW
5
0.9
SW
5
0.9
SSW
6
1
SSW
6
0.7
SSW
6
0.6
SSW
6
Wave Graph
Metric surfscale
Energy kJ
53
127
68
51
92
72
90
145
134
113
64
39
37
46
53
42
53
66
28
33
Wind (km/h)
25
SW
25
WSW
15
SW
25
SW
25
WSW
25
WSW
30
SW
20
SW
20
WSW
25
SW
10
NW
10
SSW
20
SSW
25
SW
20
SW
25
SW
10
NW
5
W
15
SSW
20
SW
Wind State
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross
cross
cross
off
cross-on
cross-on
cross
cross
cross
off
cross-off
cross-on
cross-on
High Tide
2:09PM0.95m
2:40AM0.71m
3:20PM0.97m
3:52AM0.71m
4:35PM1.00m
5:04AM0.75m
5:43PM1.04m
6:10AM0.82m
6:44PM1.08m
7:08AM0.90m
7:37PM1.09m
8:02AM0.97m
8:27PM1.09m
Low Tide
9:20PM0.16m
8:19AM0.08m
10:36PM0.14m
9:31AM0.06m
11:40PM0.10m
10:49AM0.03m
00:36AM0.05m
12:02PM-0.01m
1:27AM0.00m
1:07PM-0.05m
2:13AM-0.03m
2:05PM-0.06m
2:57AM-0.05m
clear
clear
clear
clear
thunderstorm
rain showers
clear
clear
part cloud
clear
clear
clear
clear
part cloud
cloud
clear
clear
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:48
5:48
5:50
5:50
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:57
7:55
7:54
7:52
7:52
7:51
7:49
 mm
2
1
1
Temp °C
27
27
27
28
28
23
25
26
25
29
29
25
27
27
25
25
27
23
25
25
Feels °C
27
28
29
28
27
23
23
27
26
27
29
24
26
27
25
25
28
23
24
26
  • 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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