Surf Forecasts:
Turtle Cove surf forecast from 17 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 11AM (local time) - 3ft (0.9m), 7s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 5PM (local time) - 4.5ft (1.4m), 6s period, S swell with 148 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 11AM (local time) - 3ft (0.9m), 7s period with SSE 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 Tuesday (Aug 18) at 11AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.3m and 4s. Another secondary swell of 0.4m and 4s is also forecast. 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 1.4m 6s and forecast to arrive on Monday (Aug 17) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Monday (Aug 24) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 18th Aug) | 3ft (0.9m) 7s |
| Best Surf | 11AM (Tue 18th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 5PM (Mon 17th Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Turtle Cove over the next 16 days.
The Lowdown
Alright folks, let's get real about this stretch we're looking at. It's been a bit of a dry spell, and honestly, for the next week or so, it's gonna be a whole lot of staring at the ocean wondering where all the waves went.
Right now and into the next few days, the swell is just tiny. We're talking knee-high mush with a lot of onshore and cross-onshore wind messing it up. The energy is weak, and there's no push. Tuesday the 18th might give you a clean little 3ft wave if the morning cross-offshore wind holds, but it's weak and won't have much power. It’s surfable, but you won't be bragging about it.
Then we hit a real dead zone from the 19th through the 27th. The surf is just not happening. You'll see some tiny 1-2ft slop with choppy winds, and it just isn't worth the drive. The few clean windows are too small to get excited about. It’s a long gap of nothing.
But hold on, because about ten days out, the ocean starts to wake up. The energy charts start climbing big time on Friday the 28th, showing a strong 1049 reading with a solid 5ft of long-period, 14-second southeast groundswell. The power is there, no doubt. But, the wind is going to be blowing hard from the east, right onshore. That’s going to turn it into a lumpy, blown-out mess. It’ll be big, but ugly.
The next day, Saturday the 29th, is the one that has my attention. The swell settles to a cleaner 2-3ft, with the energy still moderate at 139. The key is the wind. It looks like it will be light in the morning and then swing offshore from the west-southwest in the afternoon. For Turtle Cove, which likes that SE swell, that’s the recipe for a fun, clean session. This is your standout window. It won't be giant, but it should be clean and fun.
The water temp is around 72°, so normal for this time of year.
So, here's the deal. There’s a lot of flat and poor conditions to wade through, but that Saturday the 29th is the one to mark on the calendar. The long-range stuff after that is too uncertain to bank on, and it looks like it drops off again. Be patient, pick that window, and you might just score.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon morning. Warm (max 26°C on Wed afternoon, min 21°C on Mon morning). Winds decreasing (fresh winds from the SSE on Mon morning, calm by Wed night). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Fri afternoon. Warm (max 24°C on Thu morning, min 19°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
AM | PM | 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) | SSE 6 | S 6 | SSE 6 | SSE 7 | SE 8 | SE 8 | SE 7 | SE 6 | SE 9 | ESE 7 | ESE 7 | SE 9 | ESE 8 | ESE 8 | SE 8 | SE 8 | ESE 5 | ESE 6 | E 6 | E 6 | SE 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 122 | 148 | 101 | 84 | 63 | 51 | 43 | 39 | 22 | 21 | 19 | 12 | 28 | 27 | 17 | 16 | 66 | 86 | 85 | 32 | 22 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-off | cross-off |
High Tide | 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 | 5:09AM0.57m | 5:52PM0.77m | ||||||||
Low Tide | 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 | 10:13AM0.26m | 11:56PM0.22m | ||||||||
 |  |  | | |  | | | |  | |  | |  |  | | | |  |  | | |
 | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — |
mm | 4 | — | — | — | — | — | — | — | — | — | 1 | 2 | — | 12 | 2 | — | — | — | 8 | 3 | 15 |
Temp °C | 22 | 25 | 23 | 23 | 25 | 25 | 22 | 26 | 26 | 24 | 24 | 23 | 21 | 21 | 19 | 20 | 21 | 21 | 21 | 22 | 21 |
Feels °C | 20 | 29 | 24 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 21 | 22 | 16 | 20 | 21 | 22 | 22 | 25 | 20 |
Swell 1 Height (m) Direction Period (s) | — | S 6 | SSE 6 | SSE 7 | S 7 | SE 8 | SE 7 | SE 6 | SSE 6 | ESE 7 | ESE 7 | SE 9 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 9 | SE 13 | SE 12 | E 6 | S 5 |
| kJ | — | 148 | 101 | 84 | 44 | 51 | 43 | 39 | 22 | 21 | 19 | 12 | 28 | 27 | 17 | 16 | 3 | 6 | 23 | 32 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | S 14 | ENE 4 | SE 8 | S 7 | SSW 6 | SE 9 | SE 9 | SW 5 | S 6 | ESE 7 | SSW 5 | S 5 | S 5 | SE 13 | SE 13 | SE 9 | S 6 | S 5 | ESE 5 |
| kJ | — | — | 4 | 3 | 63 | 32 | 12 | 14 | 20 | 6 | 6 | 5 | 2 | 2 | 2 | 7 | 7 | 3 | 1 | 5 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | S 14 | SE 13 | SE 12 | SSE 11 | — | — | SW 6 | SSE 6 | ESE 9 | S 6 | SE 15 | SE 14 | SE 14 | — | — | — | SE 8 | ESE 12 | SE 12 |
| kJ | — | — | 4 | 7 | 6 | 12 | — | — | 1 | 7 | 8 | 3 | 8 | 8 | 8 | — | — | — | 3 | 14 | 22 |
Wind waves Height (m) Direction Period (s) | SSE 6 | — | — | NE 4 | — | — | — | — | SSW 3 | — | SW 5 | SW 3 | NE 4 | E 4 | E 4 | E 4 | ESE 5 | ESE 6 | E 6 | — | S 5 |
| kJ | 122 | — | — | 4 | — | — | — | — | 2 | — | 6 | 3 | 10 | 7 | 8 | 15 | 66 | 86 | 85 | — | 21 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 139 | 6 | 25 | 0 | 0 | 0 | 139 | 169 | 25 | 6 | 1107 | 25 | 791 | 414 | 211 | 165 | 461 | 28 | 59 | 0 | 6 |
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.
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