Block Island surfForecast / Rhode Island / USA

information circle12 Day Weather and Surf, issued 6 pm Saturday 03 Jan 2026 EST
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
6.3° C
(Which is 1.0°C colder than average 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 (Jan 09) at 4PM. The primary swell is predicted to be 1.2m and 7s period with a secondary swell of 1.1m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Block Island in the next 12 days are 3.0m 9s and forecast to arrive on Saturday (Jan 10) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Saturday (Jan 10) at 4PM.

Wave TypeTime (EST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Fri 9th Jan)4ft (1.2m) 7s
Best Surf 4PM (Fri 9th Jan)4ft (1.2m) 7s
Most Powerful 4AM (Sat 10th Jan)10ft (3.0m) 9s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Icy conditions (max 3°C on Mon night, min -6°C on Sun night). Winds decreasing (fresh winds from the NW on Sun night, light winds from the WNW by Mon night).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Fri morning. Mild temperatures (max 9°C on Tue night, min 3°C on Tue afternoon). Mainly fresh winds.

Sat
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SSW
0.4
SSW
0.4
SSW
0.3
SSW
0.2
ESE
0.2
ESE
0.2
E
1
SW
0.8
SSW
0.7
SSW
0.6
SSW
1.2
SSW
1.2
S
1.4
SSW
1
SSW
0.8
SSW
0.9
SSW
1.3
SSW
1.2
SSE
3
SSW
2.5
SSW
Period(s) (?)777711101056666888876789
Wave
Graph
(?)Metric surfscale
Energy kJ (?)18192111121084543312581200244137668413914310121045
Wind
(km/h)
20
WNW
10
NW
15
NNW
25
NW
30
NW
15
NW
15
SW
5
WNW
15
ENE
20
E
25
ESE
25
WSW
30
WSW
30
W
25
W
25
W
15
SW
25
SW
0
NNE
25
S
55
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offoffcross-
off
offcross-
off
cross-
on
cross-
off
crosscross-
on
cross-
on
crosscrosscross-
off
cross-
off
cross-
off
cross-
on
cross-
on
glasscross-
on
cross-
on
High Tide
/ height (m)
7:41PM
0.83
8:10AM
1.04
8:34PM
0.85
8:58AM
0.99
9:26PM
0.85
9:46AM
0.91
10:18PM
0.84
10:33AM
0.83
11:10PM
0.81
11:21AM
0.73
12:05AM
0.77
12:11PM
0.65
1:02AM
0.74
Low Tide
/ height (m)
1:32AM
-0.19
2:48PM
-0.15
2:28AM
-0.16
3:36PM
-0.13
3:24AM
-0.10
4:22PM
-0.10
4:22AM
-0.04
5:07PM
-0.06
5:23AM
0.03
5:51PM
-0.01
6:28AM
0.08
6:37PM
0.04
7:35AM
0.12
Sat
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
Sunrise--7:11--7:11--7:11--7:11--7:11--7:11--7:11
Sunset4:29--4:30--4:30--4:31--4:32--4:34--4:35--
cloud
cloud
cloud
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
part cloud
light rain
light rain
light rain
light rain
Rain (mm)
-----------------2411
Temp. °C-1-1-10-1-423249675468881011
Feels °C (?)-7-6-7-8-9-9-5-2-3-2400-2-3122651
  • 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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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.

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