Surf Break

Lat Long: 41.15° N 71.59° W

Block Island 48 hour detailed Surf Forecast

Issued: 1 pm 27 Sep 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
18.4°C
0.2° 

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 (27 Sep):

  • Morning surf: Morning surf (27 Sep, local time) - 7ft (2.2m), 9s period with SSE swell.
  • Afternoon surf: Afternoon surf (27 Sep, local time) - 7ft (2.1m), 8s period with SSE swell.
  • Evening surf: Evening surf (27 Sep, local time) - 4.5ft (1.4m), 9s period with ENE swell.

The current surf forecast for Block Island at 6PM is: 1.3m 9s primary swell from a East direction and 1.2m 8s secondary swell from a South-southeast direction, 0.9m 7s secondary swell from a South-southwest direction (forecast issued at 01:00pm September 27). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (27 Sep)7ft (2.2m)9s
Afternoon (27 Sep)7ft (2.1m)8s
Evening (27 Sep)4.5ft (1.4m)9s

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


Short Range Forecast

Moderate rain (total 19mm), heaviest on Sun night. Very mild (max 19°C on Mon morning, min 13°C on Mon night). Winds decreasing (strong winds from the NE on Sun night, calm by Tue night).

Sun
27
Monday
28
Tuesday
29
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
1
0
0
0
0
0
0
0
0
1
2
1
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)
2.3
SSE
9
2.1
SSE
8
1.2
E
9
1.4
ENE
9
1.7
ENE
6
1.7
ENE
6
1.6
ENE
5
1.1
ENE
9
1.8
S
8
2.3
S
8
1.9
S
7
1.8
SSW
7
1.2
S
7
1
S
7
0.8
S
6
0.6
E
8
0.6
E
8
0.6
E
9
0.6
E
9
0.6
E
9
0.6
E
9
Wave Graph
Metric surfscale
Energy kJ
832
547
230
318
208
185
143
193
396
652
388
285
131
92
54
51
51
55
56
57
56
Wind (km/h)
30
ENE
30
ENE
30
ENE
40
NE
45
NE
40
NE
40
NE
25
ENE
20
E
20
ESE
15
NE
35
NNW
25
NW
20
NW
20
NW
15
WNW
15
NW
10
W
10
WSW
5
WSW
5
WSW
Wind State
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross
cross
glassy
High Tide
8:39AM1.05m
8:58PM0.93m
9:16AM1.08m
9:40PM0.91m
9:58AM1.08m
10:25PM0.87m
Low Tide
2:58PM-0.01m
2:43AM-0.03m
3:38PM-0.01m
3:19AM-0.02m
4:24PM0.02m
light rain
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
rain showers
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
—
6:39
—
—
—
—
—
—
—
6:39
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
6:35
—
—
—
—
—
—
—
6:34
—
—
—
—
—
—
—
6:31
—
—
 mm
1
1
1
3
2
3
4
1
1
2
1
—
—
—
—
—
—
—
—
—
—
Temp °C
18
18
18
17
17
16
16
17
19
19
17
14
13
13
13
14
15
17
17
18
18
Feels °C
15
15
14
12
11
10
10
14
17
17
16
9
9
9
10
12
13
16
16
18
19
  • 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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