Surf Forecasts:
Turtle Cove surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 2ft (0.6m), 8s period, SE swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 11AM (local time) - 4.5ft (1.4m), 6s period, SSW swell with 144 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 2ft (0.6m), 8s period with SE 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 Wednesday (Aug 19) at 2AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.6m 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 1.4m 6s and forecast to arrive on Monday (Aug 24) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Monday (Aug 24) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 19th Aug) | 2ft (0.6m) 8s |
| Best Surf | 2AM (Wed 19th Aug) | 2ft (0.6m) 8s |
| Most Powerful | 11AM (Mon 24th Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Turtle Cove over the next 16 days.
The Lowdown
Alright folks, Rusty here, looking at the next stretch for Turtle Cove. It’s a reef and point set-up that’s fairly consistent, but let me tell you, it’s gonna be a test of patience for the most part. We’ve got a long, flat spell on the cards before things finally get interesting. Buckle up.
The first ten days or so are looking pretty grim. We're talking a lot of small, weak surf with poor conditions. The swell energy is just not there, with readings mostly in the twenties and thirties, which is about as weak as it gets. There are a few clean moments, like Tuesday afternoon the 18th with a 3ft SSE swell, but it’s only a 7-second period and very ordinary. The wind is cross-off, so the surface is clean, but there’s just no punch to it. It’s one of those times you paddle out and just find yourself drifting, not surfing.
We then hit a real dead zone. From the 19th right through the 23rd, it's all poor surf, mostly under 3ft, with winds swinging onshore and making a mess of things. The swell directions are all over the shop, but the periods are short and the energy is minimal. From Thursday the 20th to Sunday the 23rd, it’s basically a write-off. The swell is small, but more importantly, it’s chopped up and ugly. Not worth the wetsuit.
There’s a little flicker of life on Monday the 24th. The morning brings a 5ft SSW swell, with a moderate energy reading of 278, and the wind is a cross-off. It’s got some push to it, but the period is only 6 seconds, so it’s going to be a bit messy and disorganised. The call is marginal, so I wouldn't get too excited. The afternoon cleans up a bit with a light breeze, but the swell drops back to 4ft.
Now, if you're willing to wait, the real standout is Saturday the 29th, which is more than a week out, so don't book the time off just yet, but it's promising. The morning has a 4ft S swell, a 7-second period, and it’s glassy. The energy jumps right up to 292, which is a solid reading. That's the window. Glassy conditions and a clean S swell at Turtle Cove (Big Island) is as good as it gets in this stretch. The autumn sun will be on it as well, and with the water temp at a normal 72°F, it will feel great. It is the clear standout.
After that, things get a bit messy again with some fresh cross-onshore winds kicking up through the 30th and 31st. The first of September has some size, up to 4ft, but the wind is all wrong, making it choppy.
So, the bottom line: suffer through the first week-plus, keep an eye on the forecast for the 29th, and be ready to move. That’s the one true standout on offer.
Rusty out.
Short Range ForecastMostly dry. Warm (max 26°C on Wed night, min 20°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Sun night. Warm (max 23°C on Fri afternoon, min 17°C on Sat night). Winds increasing (light winds from the SE on Fri afternoon, fresh winds from the ESE by Sat night). | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 7 | SE 8 | SE 7 | SSE 6 | SE 9 | ESE 7 | ESE 7 | SE 7 | SE 8 | SE 8 | ESE 8 | SE 8 | ESE 5 | ESE 6 | SE 5 | SSE 6 | SSE 6 | SSW 6 | S 6 | S 7 |
Wave Graph | ||||||||||||||||||||
97 | 40 | 39 | 24 | 13 | 20 | 19 | 12 | 25 | 18 | 26 | 16 | 49 | 80 | 29 | 40 | 58 | 144 | 100 | 56 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | cross-on | cross-on | on | cross-on | cross-on | on | cross | cross-off | cross-off | cross-off |
High Tide | 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 | 6:10AM0.62m | 6:36PM0.80m | ||||||||
Low Tide | 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 | 11:19AM0.23m | 00:32AM0.16m | |||||||
— | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | |
7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:32 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 8 | 5 | 3 | — |
Temp °C | 23 | 25 | 25 | 25 | 26 | 24 | 22 | 23 | 21 | 23 | 22 | 21 | 21 | 19 | 18 | 21 | 23 | 22 | 22 | 23 |
Feels °C | 24 | 26 | 26 | 25 | 26 | 24 | 21 | 22 | 19 | 20 | 20 | 19 | 18 | 13 | 17 | 21 | 25 | 23 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | S 7 | SE 7 | SSE 6 | SSE 6 | ESE 7 | ESE 7 | SE 7 | SE 8 | SE 8 | ESE 8 | SE 8 | SE 9 | SE 9 | SE 5 | ESE 12 | SE 12 | S 6 | SE 11 | S 7 |
97 | 31 | 39 | 24 | 12 | 20 | 19 | 12 | 25 | 18 | 26 | 16 | 3 | 3 | 29 | 14 | 22 | 113 | 19 | 56 | |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 8 | SE 10 | SE 8 | SE 9 | S 5 | S 5 | SE 8 | — | ENE 5 | SSW 5 | SE 13 | SE 13 | SE 13 | ESE 12 | SE 8 | — | SE 12 | ESE 7 | SE 11 |
6 | 40 | 15 | 9 | 13 | 5 | 5 | 11 | — | 4 | 2 | 7 | 7 | 6 | 15 | 3 | — | 21 | 4 | 30 | |
Swell 3 Height (m) Direction Period (s) | SE 12 | SSE 11 | — | SSE 10 | ESE 7 | SSW 3 | SE 9 | SW 5 | SE 15 | S 6 | SE 14 | SW 5 | SW 5 | E 8 | SE 8 | SE 8 | — | — | — | ESE 6 |
6 | 12 | — | 9 | 5 | 1 | 12 | 1 | 8 | 1 | 7 | 1 | 1 | 1 | 3 | 3 | — | — | — | 4 | |
Wind waves Height (m) Direction Period (s) | — | — | SSW 6 | SSW 3 | SSW 3 | — | N 3 | — | NE 4 | — | ESE 3 | E 3 | ESE 5 | ESE 6 | — | SSE 6 | SSE 6 | SSW 6 | S 6 | — |
— | — | 12 | 3 | 4 | — | 2 | — | 7 | — | 2 | 5 | 49 | 80 | — | 40 | 58 | 144 | 100 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 139 | 214 | 57 | 139 | 184 | 265 | 265 | 2516 | 214 | 645 | 645 | 117 | 1289 | 645 | 2 | 78 | 0 | 0 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











