Surf Forecasts:
Turtle Cove surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 5PM (local time) - 5.5ft (1.7m), 7s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 5PM (local time) - 5.5ft (1.7m), 7s period, SSW swell with 268 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5PM (local time) - 5.5ft (1.7m), 7s period with SSW swell.
Best Forecast Surf Conditions for Turtle Cove this week:
The surf forecast for Turtle Cove over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 5PM. The primary swell is predicted to be 1.7m and 7s period with a secondary swell of 1.7m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Turtle Cove in the next 16 days are 1.7m 7s and forecast to arrive on Monday (Aug 17) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Aug 17) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 17th Aug) | 5.5ft (1.7m) 7s |
| Best Surf | 5PM (Mon 17th Aug) | 5.5ft (1.7m) 7s |
| Most Powerful | 5PM (Mon 17th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Turtle Cove over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down the next couple of weeks at Turtle Cove.
Right out of the gate, Monday morning is a dud. There’s some swell, but it’s messy, the energy is weak at 154, and the wind is making it lumpy. It cleans up a touch in the afternoon, and the energy jumps to a moderate 523, but it’s still a short-period, jumbly 6ft. It’s surfable, but you won’t be bragging about it.
Tuesday and Wednesday are pretty flat. Swell drops below 3ft, and the energy is weak, in the 70s and 120s. There’s a clean 3ft on Tuesday morning, but it’s just ordinary. Not worth the paddle.
From Thursday through the weekend, it’s dead. A proper flat spell, several days with nothing. Swell barely touches 1ft, and it’s mostly cross-onshore chop. The energy is often under 50. Sunday morning is glassy, but there’s only 2ft of swell. It’s a tanning day, not a surfing day.
The start of next week, the 24th and 25th, is still small. The periods get long—12 and 11 seconds—but there's no size. It’s a tease. Tuesday afternoon has a little bump of energy, but it's a poor 5ft with a short period.
Now, Wednesday the 26th brings some size, up to 6ft, but it’s messy with a cross-onshore wind, and the energy is a moderate 412. The period is a short 7 seconds. The report calls it poor. For a reef and point break, that’s a red flag. Don’t get fooled by the height.
The one to wait for is Saturday, August 29th, in the afternoon. That’s your window. We’ve got 6ft of SE swell with an 11-second period, and the energy is strong at 928. But the real kicker is the wind, it’s glassy. Completely glassy. The report says “expect very good surf conditions.” This is the standout of the whole stretch. For the intermediate surfer, this is it. The long period means proper groundswell, and with the glassy conditions, it’s going to be clean. Crowds are listed as “sometimes,” so there’s a chance for some solo waves, but be ready for company.
Sunday morning, the 30th, is a decent follow-up. It drops to 3ft, but there’s still a moderate 266 of energy, and it’s clean with a light offshore breeze. A solid, but less exciting, consolation.
After that, it fades out again into September. Small, weak, and clean, but not surfable. There’s a hopeful signal on the 29th, but it looks like a one-day wonder.
So, be patient. There’s a long flat stretch, some messy junky surf, and then one quality window on Saturday the 29th. That’s the one to mark on the calendar.
Rusty out.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon morning. Warm (max 25°C on Wed afternoon, min 20°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Fri night. Warm (max 25°C on Wed night, min 19°C on Sat morning). Winds increasing (calm on Thu night, fresh winds from the NE by Sat morning). | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | SE 8 | S 6 | S 7 | S 7 | S 7 | S 7 | S 7 | SE 8 | SE 7 | SE 9 | SE 8 | ESE 7 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | E 5 |
Wave Graph | |||||||||||||||||||
11 | 154 | 268 | 107 | 106 | 53 | 51 | 35 | 34 | 38 | 15 | 20 | 27 | 17 | 23 | 18 | 15 | 15 | 14 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross | cross-off | cross-on | cross | cross-off | cross-off | cross-off | cross-on | cross | on | cross-on | on | on | cross-on | cross-on | glassy |
High Tide | 11:13PM0.82m | 11:52AM0.93m | 11:48PM0.74m | 12:35PM0.87m | 00:23AM0.67m | 1:23PM0.81m | 1:03AM0.61m | 2:23PM0.77m | 1:53AM0.57m | 3:43PM0.74m | 3:07AM0.55m | 4:56PM0.75m | |||||||
Low Tide | 4:55AM0.03m | 5:39PM0.12m | 5:30AM0.09m | 6:28PM0.20m | 6:07AM0.15m | 7:27PM0.26m | 6:51AM0.20m | 8:51PM0.30m | 7:45AM0.24m | 10:13PM0.29m | 8:54AM0.27m | 11:11PM0.26m | |||||||
— | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | |
7:45 | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | |
mm | 5 | 7 | 4 | — | — | — | — | — | — | — | 1 | — | 1 | — | — | 4 | 3 | — | — |
Temp °C | 23 | 22 | 24 | 24 | 22 | 24 | 24 | 24 | 25 | 25 | 22 | 22 | 22 | 20 | 21 | 21 | 20 | 20 | 20 |
Feels °C | 20 | 19 | 27 | 28 | 24 | 27 | 26 | 27 | 24 | 25 | 21 | 24 | 24 | 19 | 20 | 20 | 19 | 19 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 8 | — | S 7 | S 7 | S 7 | S 7 | S 7 | SE 8 | SE 7 | SE 9 | SSW 5 | ESE 7 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | E 5 |
11 | — | 255 | 107 | 106 | 45 | 44 | 35 | 34 | 38 | 8 | 20 | 27 | 17 | 17 | 17 | 15 | 15 | 14 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | E 5 | ENE 4 | SE 8 | SE 8 | S 6 | SE 9 | SSE 6 | SE 8 | ESE 9 | SSW 5 | ESE 7 | S 5 | S 5 | SE 13 | SE 13 | ESE 7 |
— | — | — | 13 | 6 | 53 | 51 | 29 | 14 | 8 | 15 | 8 | 9 | 4 | 2 | 2 | 7 | 7 | 10 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 14 | SE 13 | E 4 | SSE 11 | SE 10 | SSE 9 | SSW 6 | SSE 5 | ESE 9 | E 7 | S 5 | SE 14 | SE 14 | — | SE 9 | SE 9 |
— | — | — | 4 | 7 | 1 | 12 | 15 | 8 | 3 | 6 | 8 | 1 | 2 | 8 | 7 | — | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | SSW 4 | S 6 | SSW 7 | NNE 3 | NE 4 | — | — | — | S 6 | SSW 4 | SW 4 | S 5 | — | ENE 4 | E 4 | E 4 | E 4 | E 5 | — |
29 | 154 | 268 | 3 | 7 | — | — | — | 19 | 8 | 6 | 13 | — | 12 | 23 | 18 | 12 | 12 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1681 | 93 | 0 | 26 | 0 | 29 | 2 | 0 | 158 | 183 | 791 | 1798 | 222 | 657 | 791 | 197 | 251 | 946 | 25 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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 16 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.











