Block Island surfForecast / Rhode Island / USA

information circle48hr Weather and Surf, issued 1 pm Saturday 21 Mar 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
2.9° C
(Which is 1.9°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 6PM is: 1.0m 7s primary swell from a South-southwest direction and 0.6m 8s secondary swell from a Southeast direction (forecast issued at 01:00pm March 21). The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Mar)5ft (1.6m)7s
Afternoon (21 Mar)4.5ft (1.3m)7s
Evening (21 Mar)3ft (0.9m)6s

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


Updates in  hr  min  s Forecast update imminent
Saturday
21
Sunday
22
Monday
23
Tuesday
24
11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
Rating
(10 max)
2
1
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.5
SSW
1.3
SSW
1.2
SSW
0.9
SSW
0.9
S
0.8
S
0.5
SE
1
SSE
1.3
SSE
1.4
S
1.4
SSW
1.4
SSW
1.5
S
1.3
SSW
1.6
S
1
SE
0.9
SSE
0.7
SSE
0.7
SE
0.7
SE
0.6
SE
0.6
SE
0.8
SSW
0.7
SSW
Period(s) (?)777666885566677888999988
Wave
Graph
(?)Metric surfscale
Energy kJ (?)200145121756449331447210412613118214126012511471737850527962
Wind
(km/h)
15
NNW
10
NW
10
N
10
NE
15
ESE
20
ESE
20
SE
30
SSE
30
SSE
30
SSW
25
SSW
15
SW
15
S
20
NNE
35
NNE
40
NNE
35
N
30
N
20
NNE
15
NNE
15
N
30
NNW
30
NNW
30
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off
cross-
on
cross-
on
onononcross-
on
cross-
on
crosscross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offoffoffoff
High Tide
/ height (m)
10:07AM
0.85
10:25PM
1.01
10:53AM
0.80
11:13PM
0.98
11:43AM
0.75
12:07AM
0.93
Low Tide
/ height (m)
3:48PM
-0.14
4:52AM
-0.11
4:30PM
-0.11
5:49AM
-0.05
5:17PM
-0.06
7:03AM
0.01
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Sunrise-------6:47-------6:45-------6:43
Sunset--6:59-------7:00-------7:00-----
part cloud
clear
clear
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
mod rain
heavy rain
heavy rain
mod rain
cloud
cloud
cloud
cloud
part cloud
clear
clear
part cloud
Rain (mm)
------------1011147--------
Temp. °C9101195445677776321132210-1
Feels °C (?)57750-1-2-2-101342-6-7-8-7-3-2-3-7-8-9
  • 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

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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