Block Island surfForecast / Rhode Island / USA

information circle48hr Weather and Surf, issued 7 am Sunday 17 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
9.4° C
(Which is 1.6°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 3PM is: 0.9m 8s primary swell from a South-southeast direction and 1.0m 7s secondary swell from a Southwest direction (forecast issued at 07:00am May 17). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (17 May)3ft (0.9m)8s
Afternoon (17 May)3ft (0.9m)8s
Evening (17 May)4ft (1.2m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Mon night. Warm (max 24°C on Sun night, min 14°C on Mon afternoon). Winds increasing (light winds from the WNW on Sun night, fresh winds from the SW by Tue afternoon).

Sunday
17
Monday
18
Tuesday
19
Wed
20
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
1
1
0
0
0
0
0
0
0
0
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)
1.4
SW
6
0.9
SSE
8
1
SSE
8
0.9
SSE
8
1.1
SW
7
1.2
SW
7
1.2
SW
7
1.1
SW
7
1
SSW
7
0.9
SSW
7
0.7
SSE
8
0.7
SSE
8
0.7
SSE
7
0.6
SSE
7
0.6
SSE
7
0.6
SSE
9
0.5
SE
9
0.6
SE
9
1.1
SW
5
1.3
SSW
5
1.5
SSW
6
1.7
SSW
6
2
SSW
6
2.1
SW
7
Wave Graph
Metric surfscale
Energy kJ
151
113
122
100
100
135
131
114
88
68
51
50
48
37
37
50
38
50
60
94
143
223
329
415
Wind (km/h)
20
WSW
15
WSW
15
WSW
20
SW
30
SW
25
SW
20
W
5
WNW
20
ENE
20
E
20
E
15
ESE
10
SSE
20
SSW
20
SW
20
SSW
20
SW
25
SW
25
SW
30
SW
35
SW
35
SW
35
SW
35
SW
cross
cross
cross
cross
cross-on
cross
cross-off
cross-off
cross
cross
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross
cross
cross
High Tide
8:43AM0.87m
9:06PM1.17m
9:36AM0.88m
9:59PM1.13m
10:30AM0.87m
10:54PM1.07m
Low Tide
2:56AM-0.12m
2:19PM-0.12m
3:50AM-0.10m
3:12PM-0.11m
4:47AM-0.07m
4:09PM-0.06m
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
rain showers
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:24
5:24
5:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:59
8:00
8:00
8:01
1
Temp °C
14
16
20
22
22
24
22
21
19
16
15
14
16
20
20
17
18
18
20
20
21
18
18
17
10
13
18
19
18
20
20
21
16
12
11
12
15
18
19
15
16
15
17
17
17
12
13
12
Swell 1
Height (m)
Direction
Period (s)
1
SSE
8
1.2
SW
6
1.1
SW
6
0.9
SSE
8
0.8
SSE
8
0.6
SE
8
0.7
S
7
1.1
SW
7
1
SSW
7
0.9
SSW
7
0.7
SSW
6
0.7
SSE
8
0.7
SSE
7
0.6
SSE
7
0.6
SSE
7
0.6
SSE
9
0.5
SE
9
0.6
SE
9
0.6
SE
8
0.6
SE
8
0.6
SE
8
0.6
SE
9
0.6
SE
9
0.6
SE
9
Energy kJ
137
113
94
100
73
54
54
114
88
68
34
50
48
37
37
50
38
46
45
45
45
46
46
49
Swell 2
Height (m)
Direction
Period (s)
0.4
ESE
8
0.9
SSE
8
1
SSE
8
0.5
S
8
0.6
SE
8
0.6
S
7
0.7
SSE
8
0.7
SSE
8
0.7
SSE
8
0.6
SSW
6
0.5
E
4
0.3
E
4
0.2
E
4
0.2
E
4
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
S
16
0.1
S
16
0.1
S
16
0.1
S
16
Energy kJ
22
113
122
29
54
39
54
51
51
24
7
3
1
1
7
7
7
5
5
5
5
Swell 3
Height (m)
Direction
Period (s)
0.3
ESE
8
0.2
E
8
0.6
SSE
8
0.1
S
13
0.1
S
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
S
16
0.1
S
13
Energy kJ
13
5
44
4
4
7
7
7
5
3
Wind waves
Height (m)
Direction
Period (s)
1.4
SW
6
1
SW
6
1.1
SW
7
1.2
SW
7
1.2
SW
7
0.4
ENE
3
0.7
E
4
0.6
E
4
0.6
SSW
6
0.5
SSW
6
0.7
SSW
4
0.8
SSW
4
0.9
SSW
5
1
SSW
5
1.1
SW
5
1.3
SSW
5
1.5
SSW
6
1.7
SSW
6
2
SSW
6
2.1
SW
7
Energy kJ
151
83
100
135
131
3
12
10
24
20
17
23
35
50
60
94
143
223
329
415
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Distance (km)
24
24
24
26
24
34
24
0
25
157
634
634
634
634
198
230
225
217
219
1095
209
209
40
216
Best forecast wave conditions in Rhode Island
Rating
(10 max)
2
2
2
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
1
1
4
4
5
4
4
5
4
4
2
4
4
4
4
4
3
3
3
3
4
Header Global
Rating
(10 max)
7
4
8
6
4
4
5
6
5
4
5
4
5
4
4
4
4
4
4
4
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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