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, surfers, Rusty here. Let’s be straight with you. The next couple of weeks are looking pretty grim for decent waves. We’ve got a long stretch of small, weak surf and messy winds, with only a couple of windows that might get the heart beating a little faster. Don’t get too excited, but there are one or two days you might want to keep an eye on.
We’re looking at a dry spell right now, with the first real chance of anything worthwhile not showing up until Monday, the 17th. Before that, it’s all small dribble – think ankle-biters under 1ft with onshore breezes. The water temp is running right at 72°, which is pretty much normal for this time of year, so no surprises there.
Monday the 17th is the first flash of life. The morning is a mess with a strong southerly wind at 22 mph and a lumpy 6ft of short-period swell, but the afternoon glass-off is where it’s at. The wind dies to nothing, and we get a clean 5ft of south swell pushing in. The combined energy is moderate at (294), so there’s some push behind it. This isn’t a day for beginners though; that size is pushing it. The swell direction is from the S, which is a bit off from the SE optimum for Turtle Cove (Big Island), but the clean conditions could still make it fun for the better surfers.
After that, things just fade back out again. Tuesday and Wednesday drop back to small and weak, with winds swinging around and messing things up. The long-range charts are showing a couple of pulses for the following week, but they’re a long way out and look pretty shaky.
The real standout of this whole 16-day stretch looks like it’ll be Thursday the 27th. The morning is still small, but the afternoon picks up a cleaner 4ft south swell, and that’s when we get the offshore west-southwest breeze. The energy is climbing to (225) and the conditions should be glassy. It’s not huge, but it’s the best combo of size and clean conditions on offer. However, being over a week away, treat this one as promising but not a done deal.
The Friday after that, the 28th, is a maybe, with a bump in size but the wind and direction look messy. The period is short and it’s coming from the east, which isn't ideal.
Honestly, it’s a tough stretch. If you’re keen, the Monday afternoon session is your best bet in the near term, and the Thursday arvo the week after has the most potential for a proper surf.
Stay patient, stay wet.
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 | 2516 | 1462 | 1521 | 2516 | 1392 | 117 | 0 | 26 | 0 | 2 | 2 | 195 | 211 | 214 | 25 | 684 | 265 | 798 | 791 | 183 |
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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