Block Island surfForecast / Rhode Island / USA

information circle48hr Weather and Surf, issued 7 pm Saturday 16 May 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Block Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Block Island sea temperature is
9.2° C
(Which is 1.7°C colder than average for this time of year)

How big are the waves at Block Island today?

The current surf forecast for Block Island at 3AM is: 1.7m 6s primary swell from a South-southwest direction and 0.8m 8s secondary swell from a South-southeast direction, 0.4m 9s secondary swell from a East-southeast direction (forecast issued at 07:00pm May 16). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (17 May)3.5ft (1.0m)8s
Afternoon (17 May)3ft (0.9m)8s
Evening (17 May)4.5ft (1.3m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Sun night, min 13°C on Mon afternoon). Winds decreasing (fresh winds from the SW on Sat night, light winds from the S by Mon night).

Sat
16
Sunday
17
Monday
18
Tue
19
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
5 AM
8 AM
11 AM
2 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.7
ESE
9
1.5
SSW
5
1.7
SSW
6
1.7
SSW
6
1.4
SW
6
1
SSE
8
1
SSE
8
1
SSE
8
1.1
SW
7
1.4
SW
6
1.1
SW
7
0.9
SW
7
0.8
SSE
8
0.9
SSW
7
0.7
SSE
8
0.7
SSE
8
0.6
SSE
7
0.7
SSE
7
0.6
SSE
7
0.6
SSE
9
0.6
SSE
9
0.5
SE
9
0.6
SE
8
1
SSW
5
Wave Graph
Metric surfscale
Energy kJ
73
104
175
231
147
137
122
125
111
153
113
77
73
64
51
50
37
48
37
50
52
37
45
50
Wind (km/h)
30
SW
35
SSW
35
SW
30
SW
25
SW
15
WSW
15
WSW
25
SW
30
SW
25
WSW
20
W
10
NNE
25
ENE
25
E
25
E
20
E
15
ESE
15
SE
10
S
15
SW
20
SW
25
SW
25
SW
25
SW
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross
cross-off
cross-off
cross
cross
cross
cross-on
cross-on
on
cross-on
cross-on
cross
cross
cross-on
cross-on
High Tide
8:14PM1.16m
8:43AM0.87m
9:06PM1.17m
9:36AM0.88m
9:59PM1.13m
10:30AM0.87m
Low Tide
2:56AM-0.12m
2:19PM-0.12m
3:50AM-0.10m
3:12PM-0.11m
4:47AM-0.07m
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
cloud
part cloud
cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:24
5:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:58
7:59
8:00
8:00
Temp °C
16
15
15
14
14
16
20
22
23
24
22
21
17
16
15
14
13
16
18
18
18
17
18
20
10
8
8
8
10
13
18
19
19
21
20
20
12
11
9
10
10
14
18
17
17
14
16
17
Swell 1
Height (m)
Direction
Period (s)
0.7
SSE
8
0.6
ESE
9
0.6
SSE
8
0.6
SSE
8
0.9
SSE
8
1
SSE
8
1.1
SW
6
1
SSE
8
0.9
SSE
8
0.6
SE
8
0.7
S
7
0.9
SW
7
0.9
SSW
7
0.9
SSW
7
0.7
SSW
6
0.7
SSE
8
0.6
SSE
7
0.7
SSE
7
0.6
SSE
7
0.6
SSE
9
0.6
SSE
9
0.5
SE
9
0.6
SE
8
0.6
SE
8
Energy kJ
73
62
54
53
110
137
94
125
98
54
53
77
73
64
35
50
37
48
37
50
52
37
45
45
Swell 2
Height (m)
Direction
Period (s)
0.7
ESE
9
0.2
SSE
10
0.5
ESE
9
0.4
ESE
9
0.4
ESE
9
0.3
ESE
8
1
SSE
8
0.4
SSE
8
0.7
SE
8
0.7
S
7
0.8
SSE
8
0.6
SSE
8
0.7
SSE
8
0.6
SSW
6
0.5
SSW
6
0.4
E
4
0.3
E
4
0.2
E
4
0.1
SE
13
0.1
SE
13
0.1
SE
13
Energy kJ
68
10
44
30
25
13
122
19
65
51
67
40
51
24
20
5
2
1
7
7
7
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
10
0.2
E
8
0.6
SSE
8
0.5
E
4
0.1
S
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
S
16
Energy kJ
20
5
44
7
4
7
7
7
5
Wind waves
Height (m)
Direction
Period (s)
0.9
SSW
4
1.5
SSW
5
1.7
SSW
6
1.7
SSW
6
1.4
SW
6
1.1
SW
6
1.1
SW
6
1.1
SW
7
1.4
SW
6
1.1
SW
7
0.4
NE
2
0.6
E
4
0.7
E
4
0.6
E
4
0.4
SSW
6
0.4
SSW
6
0.5
SSW
6
0.7
SSW
4
0.8
SSW
5
0.9
SSW
5
1
SSW
5
Energy kJ
31
104
175
231
147
96
91
111
153
113
1
9
14
11
14
12
17
14
24
38
50
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
195
24
1148
133
24
24
24
26
24
29
25
0
25
45
157
634
634
634
209
209
221
219
219
2500
Best forecast wave conditions in Rhode Island
Rating
(10 max)
1
1
2
2
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
2
4
2
3
4
4
2
1
2
2
2
1
4
4
1
1
1
1
3
4
4
4
2
Header Global
Rating
(10 max)
5
5
4
4
6
9
9
7
4
4
5
7
5
4
5
4
4
4
4
5
5
4
4
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

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