Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Block Island Surf Forecast and Surf Report

Issued: 1 am 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
20.6°C
0.1° 

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 5 Sep 2026:

  • Most powerful swell: Thursday 10 Sep, 5AM (local time) - 10ft (3.0m), 8s period, SW swell with 885 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 3.0m 8s and forecast to arrive on Thursday (Sep 10) 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 1.0m 4s period and expected on Friday (Sep 11) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Thu 10th Sep)10ft (3.0m) 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 on the table for Block Island over the next couple of weeks. Gotta be straight with ya – it’s a tough stretch.

Honestly, we're looking at a real quiet spell for paddle surfing. The whole 16-day window is a bit of a write-off, with wave heights almost never cracking anything rideable and the score reflecting that across the board. The best we can say is that there's a bit of activity mid-period, but it's far from ideal.

September 5th through September 13th is a real desert. Tiny, weak swell with poor surf conditions day after day. Winds are all over the place – cross, cross-off, cross-on – but none of it makes up for the sheer lack of any real swell energy. The combined wave energy is often below 50, which is just dead. Even the bigger windows of energy, like that Wednesday afternoon September 9th with the swell picking up to 6 ft and a combined energy of 195, or the Thursday morning September 10th hitting 6 ft with energy up at 371, are all flagged with poor surf conditions. The wind is a real issue – fresh breeze on that Thursday is offshore from the NW, which would usually clean things up, but the swell is coming from the SSW with a period of only 8 seconds, so it’s short-period, weak stuff.

The only time we see any real size is from September 13th onward, but it comes with a catch. That Sunday afternoon September 13th has 6 ft on the way from the SW, combined energy of 300, but the wind is a moderate cross-onshore, making it choppy. The Monday September 14th has 5 ft from the SW, but again, a moderate cross-shore wind and cross-chop. It's not clean, it's not well-shaped. This kind of swell, with that onshore wind, looks more like a cross- or shore-break that would be a messy, jacking close-out. Honestly, for those couple of days, the setup looks more interesting for kite surfing than paddle surfing.

Given that Block Island is a point break that rarely breaks, this blank run is not unusual for the area. It's a place that demands a very specific swell and window, and this isn't it.

There are no standout sessions here, no true highlights. Even the bigger swells in the second week are compromised. It's a lean few weeks, folks. Forecasts can change, but for now, save the petrol.

- Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 24°C on Mon afternoon, min 15°C on Sun morning). Winds decreasing (fresh winds from the ENE on Sat night, light winds from the NNE by Sun afternoon).

Days 4-6 Weather Summary

Some drizzle, heaviest during Wed night. Warm (max 24°C on Tue afternoon, min 17°C on Thu night). Winds increasing (calm on Wed morning, near gales from the SW by Wed night).

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
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
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SSW
6
0.3
SE
8
0.3
SE
9
0.3
E
8
0.6
E
8
0.4
E
9
0.4
E
10
0.4
E
10
0.4
E
9
0.3
E
9
0.2
E
9
0.6
SW
4
0.8
SW
4
1.7
SW
6
2.5
SW
7
1.7
SSW
8
1.3
SSW
7
0.8
SSW
7
0.3
SE
10
0.3
SE
10
0.3
SE
9
Wave Graph
Metric surfscale
Energy kJ
13
11
12
12
41
27
31
28
28
16
6
10
17
178
667
356
178
51
15
15
14
Wind (km/h)
15
NE
25
ENE
20
NE
20
NNE
10
SW
25
NNW
15
NW
15
SW
15
NW
10
WNW
25
SW
10
NW
15
SW
35
SW
50
SW
35
W
30
NW
25
NW
30
NW
25
NW
20
NNW
Wind State
cross-off
cross
cross-off
cross-off
cross
off
off
cross
cross-off
cross-off
cross
cross-off
cross-on
cross-on
cross
cross-off
off
cross-off
cross-off
cross-off
off
High Tide
3:13PM0.94m
3:50AM0.73m
4:30PM0.96m
5:02AM0.80m
5:35PM0.99m
6:03AM0.88m
6:31PM1.01m
6:57AM0.97m
7:21PM1.02m
7:46AM1.04m
8:07PM1.01m
8:32AM1.08m
8:50PM0.98m
Low Tide
8:08AM0.12m
10:31PM0.14m
9:43AM0.11m
11:29PM0.10m
11:08AM0.07m
00:20AM0.05m
12:13PM0.02m
1:06AM0.01m
1:09PM-0.02m
1:47AM-0.02m
2:00PM-0.03m
2:25AM-0.03m
2:47PM-0.03m
2:59AM-0.02m
clear
rain showers
light rain
light rain
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
clear
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:18
6:18
6:20
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:13
7:10
7:08
7:07
7:06
7:04
7:02
 mm
2
1
1
1
Temp °C
21
21
19
17
18
20
20
24
24
22
24
24
22
22
23
23
23
22
17
21
19
Feels °C
19
20
15
13
17
17
17
21
21
21
21
20
21
20
17
19
18
18
10
14
12
  • 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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