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Surf Forecasts:

Turtle Cove surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 1 am Wednesday 17 Sep 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Turtle Cove surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Turtle Cove sea temperature is
20.1° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Turtle Cove this week:

The surf forecast for Turtle Cove over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 2PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.2m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Turtle Cove in the next 12 days are 1.7m 10s and forecast to arrive on Monday (Sep 22) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Friday (Sep 19) at 5PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Thu 18th Sep)3ft (0.9m) 7s
Best Surf11PM (Mon 22nd Sep)5ft (1.5m) 8s
Most Powerful 2PM (Mon 22nd Sep)5.5ft (1.7m) 10s

Table - best surf conditions forecast for Turtle Cove over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 4mm), mostly falling on Wed afternoon. Warm (max 26°C on Fri afternoon, min 16°C on Fri night). Winds increasing (calm on Thu afternoon, fresh winds from the NE by Fri night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Sat afternoon, min 15°C on Sun morning). Winds decreasing (fresh winds from the NE on Sat morning, calm by Mon night).

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
1
1
0
1
0
0
0
0
0
0
0
1
1
2
1
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.5
ESE
1.6
ESE
1.4
ESE
1
ESE
0.9
ESE
0.7
SE
0.6
ESE
0.5
ESE
0.8
NNE
1.2
ENE
0.7
E
0.7
ESE
0.4
SE
0.6
SE
0.7
SE
1.6
SE
1.6
SE
1.3
SE
1.2
SE
1.1
SE
1.3
SE
Period(s) (?)7777788845551312121098799
Wave
Graph
(?)Metric surfscale
Energy kJ (?)24925619610896594235217527226198139541414198156216257
Wind
(km/h)
30
ENE
30
E
20
ENE
15
NE
5
SW
20
W
15
WNW
15
W
30
NE
30
ENE
20
ESE
20
E
30
E
25
ESE
15
ESE
10
E
10
SSE
0
NNW
0
SSW
15
SSW
10
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononcross-
on		cross-
off		offcross-
off		offcross-
on		cross-
on		ononononcross-
on		oncross-
on		glassglasscross-
off		cross-
off
High Tide
/ height (m)
5:43PM
0.90
6:07AM
0.80
6:35PM
0.91
6:55AM
0.86
7:18PM
0.91
7:37AM
0.91
7:57PM
0.90
8:15AM
0.94
8:30PM
0.87
8:50AM
0.96
8:59PM
0.84
9:21AM
0.95
9:24PM
0.81
Low Tide
/ height (m)
10:52AM
0.15
11:55PM
0.09
11:50AM
0.11
12:36AM
0.06
12:38PM
0.07
1:11AM
0.05
1:19PM
0.05
1:41AM
0.03
1:56PM
0.03
2:08AM
0.03
2:31PM
0.04
2:34AM
0.03
3:04PM
0.05
3:01AM
0.05
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise6:28--6:30--6:31--6:31--6:33--6:33--6:35--
Sunset-6:52--6:52--6:50--6:47--6:46--6:45--6:43-
part cloud
light rain
light rain
cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
clear
clear
part cloud
Rain (mm)
-31------------------
Temp. °C181819192021222624161817161516171818182020
Feels °C (?)1314171923212024239141210914161818191918
  • 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 Long Island NY

  1. weather stationWind Update Wind reports 5 km away suggest it is still onshore at Turtle Cove (light winds from the ENE at Montauk Airport). 1.3m 7s swell from the ESE to make surfable waves.

    2 hours 31 minutes ago Turtle Cove
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2 h 31 min ago

13 km/h
ENE
Onshore
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 Turtle Cove 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.

View detailed surf forecast for Turtle Cove at:
surf-forecast.com

Information about the Turtle Cove Surf forecast

The above surf forecast table for Turtle Cove provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Turtle Cove can be found by selecting the local surf guide option on the grey menu. Our Turtle Cove 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 (Turtle Cove) 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 Turtle Cove 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.

Turtle Cove is 34 km (21 miles) from Westerly. If you plan a vacation in Long Island New York, 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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