Surf Forecasts:
Turtle Cove surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 5PM (local time) - 5.5ft (1.7m), 6s period, S swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 2PM (local time) - 6ft (1.8m), 6s period, S swell with 251 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5PM (local time) - 5.5ft (1.7m), 6s 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 Monday (Aug 17) at 5PM. The primary swell is predicted to be 1.7m and 6s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Turtle Cove in the next 16 days are 1.8m 6s and forecast to arrive on Monday (Aug 17) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Aug 17) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 17th Aug) | 5.5ft (1.7m) 6s |
| Best Surf | 5PM (Mon 17th Aug) | 5.5ft (1.7m) 6s |
| Most Powerful | 2PM (Mon 17th Aug) | 6ft (1.8m) 6s |
Table - best surf conditions forecast for Turtle Cove over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s run through it in feet and Fahrenheit.
The outlook for Turtle Cove is a tough one. The next 16 days are mostly a flat spell. Water temperature is 72°F, right around the average for this time of year, so that’s fine.
The first real chance doesn’t appear until Monday, August 17th. A late-afternoon south swell shows up at 6ft, but the period is just 6 seconds – short-period wind swell. It’s got moderate energy (226), and the wind goes offshore from the WSW, so the surface will be clean. That’s the only decent window in the first week. For a reef and point break, that short period doesn’t produce the best lines, but clean offshore wind at a point can still give you a few fun ones.
Tuesday the 18th is a drop-off to 4ft with the same short period and moderate energy (137). Winds are cross-off from the NNW, staying clean, but it’s just surfable, not special.
From Wednesday the 19th onward, the swell goes tiny. Weak numbers, weak energy, mostly cross or onshore wind. There’s a glassy morning on Saturday the 29th of August with a 2ft wave, but it’s weak (85) and just too small to hold quality. Plenty of clean but flat water.
The only standout is that Monday afternoon on the 17th of August. It’s the only time the wave height gets over 3ft, the wind is good, and the break is exposed to the south. If you’re a solid intermediate, that’s your one chance. The rest of the run is a long dry spell, pretty normal for this area when the swell chart goes flat.
That’s the straight dope.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Mon morning. Warm (max 25°C on Mon night, min 19°C on Sun morning). Winds increasing (calm on Sun morning, fresh winds from the S by Mon morning). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Warm (max 25°C on Tue afternoon, min 21°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the SW by Wed night). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | ESE 9 | SSE 6 | S 6 | SE 9 | SE 8 | SE 8 | S 6 | S 6 | S 7 | S 7 | S 7 | SE 7 | SE 7 | SE 7 | SE 9 | SE 7 | SE 7 | SE 8 | ENE 5 | E 5 | E 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 4 | 3 | 12 | 11 | 11 | 0 | 226 | 203 | 124 | 64 | 44 | 43 | 28 | 28 | 13 | 13 | 11 | 44 | 42 | 41 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | glassy | cross-off | cross-off | cross | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:26AM1.00m | 10:37PM0.90m | 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 | |||||||
Low Tide | 4:08PM-0.01m | 4:21AM-0.02m | 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 | ||||||||
 |  |  | | |  |  |  |  | | | | | | | | | | | |  | |
 | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — |
mm | — | — | — | — | — | — | 2 | 3 | 1 | — | — | — | — | — | — | 2 | 3 | — | — | 2 | 1 |
Temp °C | 21 | 23 | 24 | 20 | 23 | 24 | 22 | 24 | 25 | 23 | 25 | 24 | 23 | 25 | 25 | 23 | 23 | 23 | 21 | 21 | 20 |
Feels °C | 20 | 21 | 23 | 21 | 20 | 22 | 19 | 26 | 27 | 25 | 24 | 23 | 24 | 25 | 24 | 24 | 25 | 25 | 19 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 9 | SE 9 | S 6 | SE 8 | SE 8 | — | — | S 7 | S 7 | S 7 | SE 7 | SE 7 | SE 7 | SE 9 | S 5 | SSW 5 | SSW 5 | SE 8 | SE 8 | SE 8 |
| kJ | 6 | 3 | 3 | 7 | 11 | 11 | — | — | 203 | 124 | 58 | 44 | 43 | 28 | 28 | 13 | 13 | 7 | 18 | 18 | 17 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SSE 6 | SSW 3 | SE 9 | SE 6 | — | — | — | S 14 | SE 13 | SE 8 | SSW 7 | SSW 6 | SE 9 | ESE 5 | SE 7 | SE 7 | SE 8 | S 5 | S 6 | S 6 |
| kJ | 8 | 4 | 1 | 12 | 1 | — | — | — | 4 | 7 | 64 | 26 | 12 | 14 | 3 | 12 | 11 | 11 | 2 | 1 | 7 |
Swell 3 Height (m) Direction Period (s) | SE 12 | S 5 | S 6 | — | — | — | — | — | — | SE 13 | SE 12 | SSE 11 | SSE 10 | — | — | SE 9 | SE 9 | ESE 6 | SE 15 | S 5 | SE 14 |
| kJ | 6 | 2 | 3 | — | — | — | — | — | — | 6 | 6 | 12 | 10 | — | — | 12 | 12 | 8 | 8 | 1 | 8 |
Wind waves Height (m) Direction Period (s) | NE 3 | — | W 3 | — | SSW 6 | SSW 4 | S 6 | S 6 | — | — | — | — | — | SSW 6 | SSW 4 | SW 5 | — | NE 3 | ENE 5 | E 5 | E 5 |
| kJ | 2 | — | 1 | — | 20 | 20 | 210 | 226 | — | — | — | — | — | 12 | 16 | 12 | — | 5 | 44 | 42 | 41 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1672 | 3421 | 1566 | 1521 | 1685 | 1476 | 173 | 0 | 24 | 0 | 2 | 0 | 0 | 791 | 222 | 6 | 1107 | 25 | 128 | 461 | 211 |
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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