Surf Forecasts:
Turtle Cove surf forecast from 16 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 11AM (local time) - 3.5ft (1.0m), 7s period, S swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 3.5ft (1.1m), 7s period, S swell with 120 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 11AM (local time) - 3.5ft (1.0m), 7s period with S 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 1.0m and 7s period with a secondary swell of 0.3m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Turtle Cove in the next 16 days are 1.1m 7s and forecast to arrive on Tuesday (Aug 18) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Monday (Aug 17) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 18th Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 11AM (Tue 18th Aug) | 3.5ft (1.0m) 7s |
| Most Powerful | 8AM (Tue 18th Aug) | 3.5ft (1.1m) 7s |
Table - best surf conditions forecast for Turtle Cove over the next 16 days.
The Lowdown
Alright, let's be honest with ourselves. We’re looking at Turtle Cove, and it’s a bit of a heartbreaker. The swell is tiny and weak for pretty much the entire outlook. The combined energy struggles to get anywhere, barely creeping into the low triple digits on a few days, with most of the time spent under 100. We're talking about waves from 1ft to just over 2ft for most of the first week, and even when it tries to bump up slightly, the quality just isn't there. The water is sitting at about 73°F, which is pretty average for this time of year.
First off, let's get the biggest problem out of the way. From now all the way through to Saturday the 17th of August, the surf is basically non-existent. Small, weak, and messy. There is a light S swell arriving on Monday the 19th that takes the energy up to 112, but the period is a pathetic 7 seconds and there is no clean wind to polish it. It’s just ordinary.
The first real glimmer of hope, and I mean a tiny glimmer, shows up on the morning of Tuesday the 20th of August. A 3ft S swell with a 7-second period and glassy conditions. That is the best we're going to see for a while. The combined energy is still weak at just 115. For the experienced crew on a longboard, that Tuesday morning might be the only chance to get a couple of soft, slow ones at the point. If you want anything resembling a proper wave, that's your window.
After that, it’s back to the doldrums. The second week doesn’t raise any real hopes. Things try to perk up around Wednesday the 28th of August with a long-period groundswell from the SE. The period jumps to 15 seconds and the energy climbs to a surprising 163, but the swell height is only 2ft. That’s a long period for a wave that won’t stand up. It’s a lot of water movement without any push. It will probably just make the reef look lumpy.
Honestly, for the next 16 days, Turtle Cove isn’t offering a session that will get your heart racing. The best advice I can give is to wait for Tuesday the 20th morning. Keep your expectations low, bring your log, and you might just get a few glassy, knee-high runners. Otherwise, this is a stretch to forget.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Mon morning. Warm (max 24°C on Tue afternoon, min 20°C on Sun morning). Winds decreasing (fresh winds from the SSE on Mon morning, calm by Tue morning). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Warm (max 25°C on Wed afternoon, min 18°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | SE 9 | SE 8 | SE 8 | SE 8 | S 6 | SSE 7 | S 7 | SE 8 | SE 8 | SE 7 | SE 6 | SE 9 | SE 7 | ESE 9 | SE 9 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 11 | 11 | 10 | 92 | 96 | 94 | 64 | 60 | 43 | 16 | 39 | 14 | 30 | 27 | 18 | 26 | 26 | 22 | 21 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross | cross-on | cross | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | on | on | cross-on |
High Tide | 11:09AM0.98m | 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 | 4:53PM0.05m | 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 | ||||||||
 |  |  |  | |  | | | | | |  | |  | | | | |  | | | |
 | 5:56 | — | — | 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 | — | — | 3 | 5 | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 23 | 22 | 23 | 22 | 22 | 24 | 24 | 24 | 25 | 25 | 21 | 22 | 23 | 19 | 21 | 21 | 21 | 19 | 19 |
Feels °C | 22 | 20 | 20 | 21 | 26 | 23 | 25 | 25 | 25 | 26 | 24 | 23 | 21 | 23 | 21 | 17 | 21 | 20 | 20 | 16 | 18 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 8 | SE 8 | SE 8 | S 6 | SSE 7 | S 7 | SE 8 | SE 8 | SE 7 | SE 6 | SE 9 | SSW 5 | ESE 9 | SE 9 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 |
| kJ | 7 | 11 | 11 | 10 | 92 | 96 | 94 | 64 | 60 | 43 | 16 | 39 | 14 | 30 | 27 | 18 | 26 | 26 | 22 | 21 | 21 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 6 | — | S 9 | SE 9 | SSW 7 | SE 8 | S 7 | SSW 6 | SSW 6 | SE 9 | SSW 6 | SE 9 | SSW 5 | SSW 4 | S 5 | S 5 | SSW 6 | SSW 6 | SSW 6 | SSW 7 |
| kJ | 12 | 1 | — | 2 | 12 | 38 | 11 | 45 | 31 | 13 | 14 | 6 | 12 | 8 | 2 | 5 | 8 | 4 | 6 | 3 | 15 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 9 | S 14 | SE 13 | SE 12 | SSE 7 | SE 10 | SE 7 | SSE 6 | SE 7 | SW 5 | S 6 | E 7 | ENE 3 | SSE 5 | SSE 6 | E 3 | SE 9 |
| kJ | — | — | — | — | 2 | 4 | 7 | 6 | 4 | 15 | 9 | 3 | 11 | 3 | 3 | 1 | 1 | 3 | 3 | 1 | 3 |
Wind waves Height (m) Direction Period (s) | — | S 6 | SSW 5 | S 5 | — | — | — | — | — | — | SSW 6 | SSW 4 | — | — | — | NE 3 | — | ENE 3 | ENE 3 | — | — |
| kJ | — | 18 | 52 | 83 | — | — | — | — | — | — | 15 | 5 | — | — | — | 2 | — | 1 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1521 | 1163 | 2364 | 78 | 18 | 0 | 0 | 2 | 0 | 154 | 674 | 30 | 25 | 1681 | 666 | 666 | 791 | 214 | 214 | 165 | 61 |
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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