Block Island surfForecast / Rhode Island / USA

information circle48hr Weather and Surf, issued 7 am 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 10AM is: 0.8m 9s primary swell from a South-southeast direction and 0.7m 9s secondary swell from a East-southeast direction, 0.3m 3s secondary swell from a Southwest direction (forecast issued at 07:00am May 16). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (16 May)3ft (0.9m)9s
Afternoon (16 May)2.5ft (0.7m)9s
Evening (16 May)5ft (1.6m)5s

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 25°C on Sun night, min 13°C on Sat morning). Winds decreasing (strong winds from the SW on Sat night, light winds from the SSE by Mon night).

Saturday
16
Sunday
17
Monday
18
Tue
19
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.9
ESE
10
0.9
ESE
9
0.8
SSE
9
0.7
ESE
9
0.7
SSE
8
1.6
SSW
5
1.9
SSW
6
1.9
SW
6
1.7
SW
6
1
SSE
8
1
SSE
8
1
SSE
8
0.9
SSE
8
0.9
SSE
8
1.1
SW
7
0.9
SSE
8
1
SSW
7
0.9
SSW
7
0.7
SSE
8
0.7
SSE
8
0.7
SSE
8
0.6
SSE
7
0.6
SSE
7
0.6
SSE
9
Wave Graph
Metric surfscale
Energy kJ
154
119
101
86
73
127
261
287
239
137
122
125
92
89
103
91
88
62
50
50
50
37
37
50
Wind (km/h)
15
SW
15
WSW
20
SW
25
SW
30
SW
35
SSW
40
SW
35
SW
25
WSW
20
WSW
20
WSW
25
SW
25
SW
30
WSW
15
W
15
NNE
25
ENE
20
E
20
E
20
ESE
15
SE
5
SSE
10
SSW
15
SSW
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross
cross
cross-off
cross-off
cross
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
High Tide
7:52AM0.86m
8:14PM1.16m
8:43AM0.87m
9:06PM1.17m
9:36AM0.88m
9:59PM1.13m
Low Tide
2:05AM-0.11m
1:29PM-0.12m
2:56AM-0.12m
2:19PM-0.12m
3:50AM-0.10m
3:12PM-0.11m
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
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
12
13
15
16
15
15
14
14
14
17
21
23
23
25
22
21
17
15
15
14
15
15
17
18
9
10
12
11
9
8
6
7
9
14
19
20
19
20
20
19
12
10
10
10
13
15
17
18
Swell 1
Height (m)
Direction
Period (s)
0.9
SSE
9
0.9
ESE
9
0.8
SSE
9
0.7
SSE
8
0.7
SSE
8
0.6
ESE
9
0.6
SSE
8
0.9
SSE
8
0.9
SSE
8
1.3
SW
6
1.1
SW
7
1
SSE
8
0.9
SSE
8
0.9
SSE
8
0.7
SSE
8
1
SW
7
1
SSW
7
0.9
SSW
7
0.7
SSW
6
0.7
SSE
8
0.7
SSE
8
0.6
SSE
7
0.6
SSE
7
0.6
SSE
9
Energy kJ
137
119
101
75
73
62
55
113
116
130
97
125
92
89
58
91
88
62
33
50
50
37
37
50
Swell 2
Height (m)
Direction
Period (s)
0.9
ESE
10
0.6
SSE
8
0.7
ESE
9
0.7
ESE
9
0.6
ESE
9
0.2
SSE
10
0.5
ESE
9
0.4
ESE
9
0.3
ESE
8
1
SSE
8
1
SSE
8
0.2
E
8
0.5
S
7
0.9
SSE
8
0.6
SSE
8
0.6
SSE
8
0.7
SSE
8
0.6
SSW
6
0.5
SSW
6
0.4
SSW
6
0.2
ENE
4
Energy kJ
154
53
84
86
61
10
44
30
13
137
122
5
27
83
41
40
50
24
20
13
1
Swell 3
Height (m)
Direction
Period (s)
0.7
SSE
9
0.5
SSE
10
0.6
ESE
10
0.6
ESE
9
0.5
E
9
0.3
ESE
8
0.2
E
8
0.3
ENE
4
0.3
ENE
4
0.1
SE
13
0.1
SE
13
Energy kJ
78
54
63
58
39
13
5
3
3
7
7
Wind waves
Height (m)
Direction
Period (s)
0.3
SW
4
0.3
SW
4
0.4
SW
3
0.6
SW
3
1.1
SW
4
1.6
SSW
5
1.9
SSW
6
1.9
SW
6
1.7
SW
6
1
SW
7
1
SW
7
1
SW
7
1.1
SW
7
0.2
ENE
3
0.3
ENE
4
0.4
SSW
6
0.6
SSW
4
Energy kJ
3
3
2
7
42
127
261
287
239
85
85
85
103
1
2
12
10
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
24
24
26
24
133
1084
1148
198
24
24
24
26
40
29
24
0
39
157
157
634
634
634
198
24
Best forecast wave conditions in Rhode Island
Rating
(10 max)
2
2
1
2
2
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
3
4
2
4
3
3
4
4
2
4
1
3
4
4
5
4
4
5
4
4
4
4
4
Header Global
Rating
(10 max)
5
5
5
6
5
4
4
4
6
9
9
7
4
4
5
7
5
4
5
5
4
4
4
4
  • 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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