Surf Forecasts:
Turtle Cove surf forecast from 31 Jul 2026:
- Best quality surf: Friday 31 Jul, 11AM (local time) - 3.5ft (1.0m), 9s period, S swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 8PM (local time) - 4.5ft (1.3m), 7s period, S swell with 183 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 11AM (local time) - 3.5ft (1.0m), 9s 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 Friday (Jul 31) at 11AM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.2m and 6s. 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 1.3m 7s and forecast to arrive on Monday (Aug 03) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Aug 03) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Fri 31st Jul) | 3.5ft (1.0m) 9s |
| Best Surf | 11AM (Fri 31st Jul) | 3.5ft (1.0m) 9s |
| Most Powerful | 8PM (Mon 3rd Aug) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Turtle Cove over the next 16 days.
The Lowdown
Alright, grab your board and let’s have a look at what’s on the menu for the next couple of weeks at Turtle Cove (Big Island).
Honestly, the next week to ten days is looking pretty bleak for us. We're staring down a stretch of poor surf, with a lot of weak, short-period swell and breezy conditions that’ll chop things up. The wave energy is just piddling—mostly in the double digits, like 27 to 158, which is weak to moderate at best. Don't get your hopes up.
The one little glimmer in the near term is Friday morning, July 31st. It’s not going to be epic, but it’s the best we’ve got. The swell is 3 ft from the S at 9 seconds, and with a glassy 3 mph WSW wind, it’ll be the cleanest you’ll find. The energy is sitting at 161, and you might snag a few soft, ordinary waves. But it's a morning-only thing; the wind picks up in the afternoon and ruins it.
From there, it’s a wasteland. Saturday and Sunday are cross-shore and choppy, with the swell dropping. We see a little bump of 4 ft on Monday afternoon (August 3rd), but with a 22 mph cross-offshore wind, it’s not going to be any fun. The water temps are about normal for this time of year, so no drama there.
Looking further out, there’s a small window on Sunday morning, August 9th. The wind will be light offshore from the WNW, and we might see a 2 ft SSW swell. It’s tiny, but it’s clean. The energy is a weak 58, and it’s a long way out, so treat that as a promise that might not hold.
The rest of the second week looks like more of the same—small, weak, and mostly cross-shore junk. There’s a slight pulse of 3 ft on Tuesday, August 11th, but again, it's ordinary. With this kind of weak, inconsistent small surf, if you're desperate for a paddle, go for Friday morning. Otherwise, keep the board in the car and don't force it.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sat afternoon, min 19°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Mon morning. Warm (max 25°C on Mon morning, min 22°C on Tue night). Winds decreasing (fresh winds from the S on Mon afternoon, light winds from the SW by Wed morning). | ||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | S 8 | S 9 | SSE 8 | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | SSE 6 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | SE 7 | SE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 137 | 158 | 115 | 84 | 105 | 124 | 41 | 62 | 23 | 15 | 16 | 156 | 155 | 103 | 96 | 58 | 30 | 13 | 16 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:12PM0.87m | 9:42AM0.79m | 9:42PM0.86m | 10:13AM0.82m | 10:15PM0.84m | 10:47AM0.84m | 10:53PM0.80m | 11:24AM0.86m | 11:36PM0.76m | 12:08PM0.87m | 00:24AM0.72m | 12:59PM0.88m | 1:20AM0.68m | ||||||
Low Tide | 3:11AM0.02m | 3:12PM0.10m | 3:43AM0.01m | 3:54PM0.10m | 4:17AM0.02m | 4:38PM0.11m | 4:55AM0.03m | 5:27PM0.13m | 5:36AM0.05m | 6:22PM0.15m | 6:22AM0.07m | 7:27PM0.17m | |||||||
 | | |  | | |  |  |  | |  |  |  | | |  | | | | |
 | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — |
 | 8:06 | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 8:00 | — | — | 7:59 | — |
mm | — | — | — | — | — | — | — | — | — | — | 3 | 1 | 2 | — | — | 2 | — | — | — |
Temp °C | 21 | 20 | 23 | 23 | 24 | 25 | 24 | 23 | 24 | 24 | 25 | 25 | 24 | 23 | 23 | 23 | 24 | 25 | 25 |
Feels °C | 23 | 21 | 22 | 22 | 25 | 24 | 23 | 24 | 25 | 26 | 25 | 25 | 23 | 23 | 23 | 24 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | SSE 8 | S 8 | S 8 | SE 8 | S 8 | SE 7 | S 7 | S 7 | SSE 6 | E 8 | S 7 | S 7 | S 7 | S 7 | S 6 | SSW 6 | SE 8 |
| kJ | 137 | 158 | 115 | 84 | 105 | 11 | 41 | 17 | 23 | 15 | 16 | 1 | 155 | 103 | 96 | 58 | 30 | 13 | 16 |
Swell 2 Height (m) Direction Period (s) | ENE 6 | E 6 | E 6 | SE 9 | SE 9 | SE 6 | SE 7 | SE 9 | SE 7 | SE 6 | SE 8 | E 8 | E 8 | SE 8 | SE 8 | ESE 8 | SE 7 | SE 7 | SSW 6 |
| kJ | 7 | 3 | 3 | 13 | 12 | 7 | 16 | 3 | 17 | 10 | 10 | 1 | 1 | 3 | 10 | 6 | 17 | 12 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | ESE 9 | E 6 | E 6 | E 6 | SE 9 | S 9 | SE 9 | ESE 9 | E 8 | — | — | E 8 | E 9 | — | E 11 | SE 8 | E 10 |
| kJ | — | — | 9 | 1 | 1 | 1 | 3 | 2 | 3 | 7 | 1 | — | — | 1 | 2 | — | 2 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 4 | — | S 8 | S 4 | S 7 | SSW 4 | S 4 | SSW 4 | S 7 | — | NE 3 | — | — | — | — | — |
| kJ | — | — | — | 10 | — | 124 | 12 | 62 | 12 | 11 | 25 | 156 | — | 2 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 2 | 0 | 0 | 657 | 265 | 45 | 1154 | 1202 | 265 | 192 | 2 | 2 | 29 | 0 | 666 | 791 | 792 |
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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