Surf Break

Lat Long: 41.15° N 71.59° W

Block Island 48 hour detailed Surf Forecast

Issued: 1 pm 12 Oct 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
16.8°C
0.5° 

Block Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Block Island today (12 Oct):

  • Morning surf: Morning surf (12 Oct, local time) - 7ft (2.1m), 10s period with S swell.
  • Afternoon surf: Afternoon surf (12 Oct, local time) - 5.5ft (1.7m), 9s period with S swell.
  • Evening surf: Evening surf (12 Oct, local time) - 5ft (1.6m), 9s period with S swell.

The current surf forecast for Block Island at 5PM is: 1.7m 9s primary swell from a South direction and 0.6m 5s secondary swell from a East-northeast direction (forecast issued at 01:00pm October 12). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (EDT) & DateWave HeightWave Period
Morning (12 Oct)7ft (2.1m)10s
Afternoon (12 Oct)5.5ft (1.7m)9s
Evening (12 Oct)5ft (1.6m)9s

Table - waves today at Block Island. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 3mm), mostly falling on Tue night. Warm (max 23°C on Wed afternoon, min 13°C on Thu morning). Winds increasing (calm on Mon afternoon, strong winds from the SW by Tue night).

Mon
12
Tuesday
13
Wednesday
14
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
1
3
2
1
2
1
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)
1.9
S
9
1.8
S
9
1.7
S
9
1.6
S
9
1.5
S
9
1.4
S
8
1.3
S
8
1.2
S
8
1
S
8
0.9
S
8
0.8
S
8
1
S
8
1.4
SSW
5
1.8
SSW
6
2.2
SSW
7
2.1
SW
7
1.9
SSW
7
1.6
SSW
7
1.5
SSW
7
1.3
SSW
7
1.1
SSW
6
Wave Graph
Metric surfscale
Energy kJ
614
517
455
404
328
278
234
195
130
100
74
110
84
211
412
381
332
243
198
158
104
Wind (km/h)
30
N
5
NNE
10
W
20
NW
15
NNW
15
NNE
25
ENE
25
E
25
ESE
20
SE
25
SE
25
SSW
35
SW
40
SW
40
SW
35
WSW
25
WSW
25
WSW
20
WSW
15
NW
20
NNW
Wind State
cross-off
glassy
cross-off
cross-off
off
cross-off
cross
cross
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross-off
off
High Tide
9:29AM1.04m
9:46PM0.80m
10:08AM0.99m
10:24PM0.75m
10:48AM0.93m
Low Tide
3:49PM0.05m
3:07AM0.08m
4:27PM0.10m
3:37AM0.11m
5:09PM0.16m
part cloud
clear
clear
clear
part cloud
clear
cloud
cloud
cloud
cloud
cloud
part cloud
rain showers
rain showers
clear
clear
clear
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
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6:54
—
—
—
—
—
—
—
6:56
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
6:10
—
—
—
—
—
—
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6:08
—
—
—
—
—
—
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6:07
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
1
2
—
—
—
—
—
—
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Temp °C
14
17
19
18
17
16
15
14
14
14
16
18
18
18
18
18
19
21
23
21
19
Feels °C
9
17
18
15
15
14
11
10
10
11
13
15
13
12
13
14
16
18
21
20
17
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Block Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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