Block Island surfForecast / Rhode Island / USA

information circle12 Day Weather and Surf, issued 7 pm Monday 14 Jul 2025 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
20.4° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Block Island this week:

The surf forecast for Block Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 18) at 2AM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 0.1m and 10s. Another secondary swell of 0.1m and 16s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Block Island in the next 12 days are 1.9m 8s and forecast to arrive on Friday (Jul 18) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Friday (Jul 18) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Fri 18th Jul)6ft (1.9m) 8s
Best Surf 2AM (Fri 18th Jul)6ft (1.9m) 8s
Most Powerful 2AM (Fri 18th Jul)6ft (1.9m) 8s

Table - best surf conditions forecast for Block Island over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Sat
26
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
ESE
0.3
SE
0.6
SSW
0.7
SSW
0.5
SW
0.7
SSW
1.2
SSW
1.2
SSW
1.5
SSW
1.9
SSW
1.5
SSW
1.5
SSW
1.3
SSW
1
SSW
0.8
SSW
0.8
SSW
0.6
SSW
0.4
SE
0.4
SSE
0.3
SE
0.5
S
0.9
S
0.9
SSW
0.8
SSW
0.8
ESE
0.8
ESE
0.8
ESE
0.8
ESE
0.9
ESE
1.1
ESE
1.2
SE
1.1
SE
0.9
ESE
1.1
S
1.2
SSW
0.7
SE
Period(s) (?)684455567888877778796888666767777556
Wave
Graph
(?)Metric surfscale
Energy (?)3322202526389111121440125527518712174835643353452134136120827582726811316013211211310653
Wind
(km/h)
15
SW
15
SW
25
SW
15
SW
15
SSW
20
SSW
30
SW
20
SW
30
SSW
15
W
15
WSW
15
WNW
20
N
10
NE
15
SW
20
SSW
15
SSW
20
S
20
SSW
15
SSW
15
SSW
5
E
20
ENE
15
E
20
ENE
15
E
10
SE
15
SSW
20
SSW
30
SSW
15
WNW
15
WSW
25
SW
20
SW
20
WSW
30
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
on
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
glasscrosscrosscrosscross-
on
oncross-
on
cross-
on
cross-
on
cross-
off
crosscross-
on
crosscrosscross-
on
High Tide
/ height (m)
11:13PM
0.93
11:46AM
0.90
12:00AM
0.89
12:34PM
0.93
12:53AM
0.83
1:28PM
0.95
1:50AM
0.78
2:28PM
0.97
2:54AM
0.74
3:36PM
0.99
4:03AM
0.73
4:45PM
1.01
5:11AM
0.74
5:50PM
1.04
6:14AM
0.78
6:49PM
1.07
7:12AM
0.82
7:43PM
1.08
8:06AM
0.87
8:32PM
1.07
8:57AM
0.90
9:19PM
1.04
9:45AM
0.92
Low Tide
/ height (m)
5:25AM
0.02
5:50PM
0.10
6:03AM
0.03
6:56PM
0.11
6:47AM
0.04
8:14PM
0.12
7:38AM
0.05
9:32PM
0.12
8:37AM
0.05
10:42PM
0.10
9:43AM
0.05
11:45PM
0.08
10:53AM
0.03
12:43AM
0.05
12:01PM
0.01
1:36AM
0.02
1:02PM
-0.00
2:26AM
-0.00
1:59PM
-0.00
3:12AM
-0.01
2:52PM
0.01
3:54AM
-0.01
3:42PM
0.03
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Sat
26
Sunrise-5:26--5:26--5:26--5:28--5:28--5:30--5:31--5:31--5:33--5:33--5:33--5:35-
Sunset--8:16--8:16--8:15--8:15--8:15--8:14--8:13--8:12--8:12--8:10--8:09--8:08
part cloudrain showersclearclearclearclearrain showerspart cloudclearpart cloudrain showerspart cloudclearpart cloudclearclearclearclearcloudpart cloudclearrain showersrain showerspart cloudpart cloudpart cloudpart cloudrain showersclearclearrain showersclearclearpart cloudpart cloudpart cloud
Rain (mm)
-2----1---1----------32----2--1-----
Temp. °C242425242526262524282729282223232323222224242022222223242525282930282830
Feels °C (?)262525242827272623272830272223222323212225261923222325262726303029272829

Short Range Forecast: Light rain (total 3mm), mostly falling on Tue morning. Warm (max 26°C on Wed afternoon, min 23°C on Mon night). Mainly fresh winds.

Days 3-6 Weather Summary Some drizzle, heaviest during Fri morning. Warm (max 29°C on Fri afternoon, min 20°C on Sat morning). Winds decreasing (fresh winds from the SW on Thu night, light winds from the NE by Sat morning).

Days 6-9 Weather Summary Light rain (total 5mm), mostly falling on Mon night. Warm (max 24°C on Mon afternoon, min 20°C on Tue morning). Wind will be generally light.

Long Range Forecast: Light rain (total 3mm), mostly falling on Wed night. Warm (max 31°C on Sat night, min 23°C on Wed night). Wind will be generally light.

  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Rhode Island

  1. weather stationWind Update The wind is still cross-on at Block Island (light winds from the SSW at Block Island Airport 3 km from Block Island). not gfswave

    Block Island
Expand
<
>
View all

2 h 31 min ago

13 km/h
SSW
Cross-On
Please reload the page to see if there are any updates.

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.


Information about the Block Island Surf forecast

The above surf forecast table for Block Island provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Block Island can be found by selecting the local surf guide option on the grey menu. Our Block Island surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Block Island) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Block Island may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Block Island is 33 km (20 miles) from Westerly. If you plan a vacation in Rhode Island, look for hotels and other accommodation in Westerly. Westerly has rooms for a wide range of budgets as well as car hire and transport links.

Nearest
Nearest
Nearest