Block Island Surf Break

Lat Long: 41.15° N 71.59° W

Issued: 7 am 20 Jun 2026 (local time)

Forecast update in  hr  min

Today's Block Island sea temperature is
15.9° C

1.5°C colder than average for this time of year

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 (20 Jun):

  • Morning surf: Morning surf (20 Jun, local time) - 3.5ft (1.1m), 8s period with SSW swell.
  • Afternoon surf: Afternoon surf (20 Jun, local time) - 5ft (1.5m), 7s period with SW swell.
  • Evening surf: Evening surf (20 Jun, local time) - 5ft (1.5m), 8s period with SSW swell.

The current surf forecast for Block Island at 1PM is: 1.5m 7s primary swell from a Southwest direction and 0.1m 13s secondary swell from a Southeast direction, 0.1m 13s secondary swell from a Southeast direction (forecast issued at 07:00am June 20). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (20 Jun)3.5ft (1.1m)8s
Afternoon (20 Jun)5ft (1.5m)7s
Evening (20 Jun)5ft (1.5m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 21mm), heaviest during Mon afternoon. Warm (max 23°C on Sun night, min 15°C on Mon afternoon). Winds decreasing (strong winds from the WNW on Sat morning, calm by Mon morning).

Saturday
20
Sunday
21
Monday
22
Tue
23
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
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
Rating
(10 max)
0
0
0
0
0
1
2
1
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SSW
8
1.1
SSW
8
1
SSW
8
1.5
SW
7
1.4
SW
7
1.5
SSW
8
1.4
SSW
8
1.3
SSW
8
1.2
SSW
8
1
SSW
8
0.9
SSW
8
0.8
SSW
8
1.1
SSW
7
1.2
SSW
5
0.5
S
7
0.8
SSW
7
0.7
SSW
7
0.7
SSW
7
0.7
S
6
0.7
S
6
1.4
SSE
5
1.5
S
6
1.3
SSW
6
1.7
SSW
6
Wave Graph
Metric surfscale
Energy kJ
206
155
120
231
223
307
257
212
163
127
102
75
134
56
29
53
47
45
38
38
93
148
113
226
Wind (km/h)
35
W
45
WNW
35
W
30
WSW
20
WSW
5
WSW
15
WNW
20
WNW
15
WNW
15
W
20
WSW
25
SW
35
SW
30
SW
10
WNW
10
NNW
10
NNW
0
ENE
0
ESE
10
NE
30
ESE
40
SSE
30
SSW
30
SSW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-off
off
off
glassy
glassy
cross-off
cross-on
on
cross-on
cross-on
High Tide
1:14PM0.91m
1:25AM0.81m
2:14PM0.90m
2:24AM0.74m
3:13PM0.89m
Low Tide
7:14AM0.01m
7:42PM0.12m
8:07AM0.05m
8:49PM0.16m
8:59AM0.09m
9:51PM0.17m
clear
clear
clear
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:13
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:22
8:22
8:22
8:22
 mm
3
5
5
3
2
Temp °C
18
18
20
22
21
22
20
18
18
18
20
21
21
22
23
21
21
21
21
16
15
17
19
19
Feels °C
11
10
14
17
18
21
18
15
16
16
17
16
15
18
21
19
19
21
21
15
11
11
17
17
Swell 1
Height (m)
Direction
Period (s)
1.3
SSW
8
1.1
SSW
8
1
SSW
8
0.1
SE
13
0.1
SE
12
0.1
SE
12
1.4
SSW
8
1.3
SSW
8
1.2
SSW
8
1
SSW
8
0.9
SSW
8
0.8
SSW
8
0.1
SE
12
0.1
SE
12
0.5
S
7
0.8
SSW
7
0.7
SSW
7
0.7
SSW
7
0.7
S
6
0.7
S
6
0.1
SE
11
0.1
SE
11
0.1
SE
11
Energy kJ
206
155
120
7
6
6
257
212
163
127
102
75
6
6
23
53
47
45
38
38
5
5
5
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
SE
11
0.1
S
9
Energy kJ
7
7
7
6
6
6
6
6
6
6
6
6
6
5
5
5
5
1
Swell 3
Height (m)
Direction
Period (s)
0.1
S
8
Energy kJ
1
Wind waves
Height (m)
Direction
Period (s)
1
W
4
1.2
W
5
1.2
W
5
1.5
SW
7
1.4
SW
7
1.5
SSW
8
0.6
W
6
0.4
W
5
0.4
WSW
3
1.1
SSW
7
1.2
SSW
5
0.8
SW
4
1.4
SSE
5
1.5
S
6
1.3
SSW
6
1.7
SSW
6
Energy kJ
38
63
71
231
223
307
23
7
4
134
56
29
93
148
113
226
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
Distance (km)
32
256
269
26
24
24
0
24
24
24
24
237
634
634
25
24
49
49
3423
2566
1804
216
201
24
Best forecast wave conditions in Rhode Island
Rating
(10 max)
1
1
1
2
2
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
4
4
3
2
2
3
3
3
3
3
2
2
3
3
4
3
3
1
1
1
2
3
Header Global
Rating
(10 max)
5
5
5
5
5
9
9
9
8
8
5
8
7
6
6
6
8
7
5
5
5
5
5
5
  • 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 

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