
Surf Forecasts:
Turtles surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 8ft (2.4m), 18s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 11PM (local time) - 10ft (3.0m), 16s period, SW swell with 3,937 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 5PM (local time) - 7.5ft (2.3m), 16s period with SW swell.
Best Forecast Surf Conditions for Turtles this week:
The surf forecast for Turtles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 5PM. The primary swell is predicted to be 2.3m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Turtles in the next 16 days are 3.0m 16s and forecast to arrive on Tuesday (Aug 11) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Tuesday (Aug 11) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 12th Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 2AM (Tue 18th Aug) | 8ft (2.4m) 18s |
| Most Powerful | 11PM (Tue 11th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Right then, let’s have a look at the forecast. We’ve got a solid run of surf coming up at Turtles, a heavy reef break for advanced surfers only. The water temp is about average for this time of year, nothing out of the ordinary.
The big picture is a long, pumping swell window, but it’s going to be a bit of a game of patience with the wind. We start off on Tuesday the 11th with a solid SSW groundswell – 6ft to 8ft – but that strong SE breeze is blowing cross-off, so it’ll be clean but a bit bumpy. The wave energy is already strong at 1585, jumping to 3715 by the afternoon. The high period of 16 seconds means it’s proper groundswell, but at a beach break that long period can make things a bit wonky and straight. Turtles is a reef, so it actually handles that well.
Wednesday the 12th is where it starts to get good. Early morning still has a bit of chop, but by the afternoon the wind swings ESE at 25 km/h, blowing offshore. That’s the magic window. You’ve got 8ft of SW swell at 16 seconds, with 2516 energy. That’s clean, powerful, and well-shaped. This is the best session of the first week.
Thursday the 13th morning is clean but the swell drops a touch to 6ft. The afternoon goes light cross-onshore, which is still surfable but the quality drops. Friday the 14th morning is another standout: offshore wind at 20 km/h, 7ft of WSW swell at a very long 17 seconds, and 2372 energy. That’s gorgeous, powerful, and clean. The afternoon goes to crap with a strong cross-onshore, so hit it early.
Saturday the 15th morning is also clean and offshore, with 6ft of SW swell. After that, from Saturday afternoon right through Sunday the 16th, it’s a write-off – cross-onshore wind, choppy, lumpy, poor conditions.
Monday the 17th is a bit of a tease. The morning has 7ft of WSW swell at 16 seconds, but the wind is light cross-onshore – it’s marginal, but a keen surfer might get a few. The afternoon is choppy and messy.
Now, the real standout of the whole 16-day run is Tuesday the 18th. The morning is absolutely firing: 8ft of WSW swell at 16 seconds, a light ESE breeze at 10 km/h, and the wave energy is massive at 3549. It’s clean, powerful, and perfect for experienced surfers. This is the one to circle. The afternoon goes cross-onshore, so get in early.
Wednesday the 19th is average with a cross-shore wind, and then Thursday the 20th sees a big jump in size – 13ft of WSW swell at 17 seconds, with energy hitting 8795. That’s a huge, powerful swell. The wind is cross-shore, so it’s going to be a washing machine. Only for the hardcore, and even then, it’s marginal. The afternoon is a bit cleaner with a cross-off wind, but 13ft is still massive.
Friday the 21st remains solid at 10ft, clean in the morning, but that’s still big and heavy. The following days drop off in size and quality, with wind issues cropping up again. There’s a gap from Saturday the 22nd afternoon through to the end of the window, with messy cross-shore winds and small, choppy waves. The last day, Wednesday the 26th, offers a clean 5ft, but it’s a long way out and the energy is low.
So, if you’re looking for a true standout, the best of the best is Wednesday afternoon the 12th and the morning of Friday the 14th, but the absolute winner, the session to book off work for, is Tuesday morning the 18th. Big, clean, powerful, and offshore. That’s the one.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Thu afternoon, min 11°C on Wed morning). Winds decreasing (strong winds from the SE on Tue morning, light winds from the SW by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sat afternoon, min 16°C on Fri morning). Winds decreasing (fresh winds from the SW on Sat afternoon, calm by Sun morning). | ||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | SW 14 | SSW 10 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 17 | WSW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 16 |
Wave Graph | |||||||||||||||||||
990 | 698 | 3715 | 3937 | 2941 | 2516 | 1563 | 1308 | 1486 | 2136 | 2323 | 2201 | 1822 | 1237 | 1289 | 975 | 721 | 623 | 1811 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-on | cross-off | off | cross-on | cross-off | off | cross-on | cross | cross-on | cross-on | on |
High Tide | 7:40AM1.19m | 10:31PM0.72m | 8:52AM1.22m | 10:51PM0.81m | 9:53AM1.22m | 11:16PM0.92m | 10:45AM1.19m | 11:43PM1.02m | 11:31AM1.13m | 00:11AM1.11m | 12:14PM1.05m | 00:39AM1.17m | |||||||
Low Tide | 3:43PM0.11m | 2:13AM0.61m | 4:21PM0.08m | 3:31AM0.52m | 4:54PM0.09m | 4:31AM0.42m | 5:22PM0.13m | 5:22AM0.34m | 5:48PM0.18m | 6:09AM0.29m | 6:12PM0.23m | ||||||||
— | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | |
6:06 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 15 | 19 | 18 | 15 | 22 | 21 | 20 | 23 | 21 | 22 | 24 | 23 | 24 | 25 | 22 | 22 | 22 | 21 |
Feels °C | 14 | 5 | 9 | 9 | 6 | 15 | 14 | 13 | 19 | 14 | 16 | 21 | 19 | 18 | 21 | 17 | 20 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SSW 10 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 17 | WSW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 16 |
990 | 698 | 3715 | 3937 | 2941 | 2516 | 1563 | 1308 | 1486 | 2136 | 2323 | 2201 | 1822 | 1237 | 1289 | 975 | 721 | 623 | 1811 | |
Swell 2 Height (m) Direction Period (s) | WSW 18 | SW 13 | — | — | — | — | W 23 | WSW 21 | NNE 4 | — | S 6 | — | — | SSW 6 | — | — | S 5 | WSW 18 | — |
352 | 369 | — | — | — | — | 43 | 150 | 4 | — | 49 | — | — | 30 | — | — | 13 | 243 | — | |
Swell 3 Height (m) Direction Period (s) | — | WSW 16 | — | — | — | — | — | — | NE 5 | — | — | — | — | — | — | — | — | SW 5 | — |
— | 518 | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 10 | — | |
Wind waves Height (m) Direction Period (s) | SSW 6 | SE 5 | SE 5 | SE 5 | ESE 5 | SE 4 | SE 4 | ENE 4 | — | S 5 | — | S 4 | S 5 | E 3 | — | S 4 | — | — | NW 3 |
119 | 94 | 37 | 54 | 40 | 14 | 34 | 11 | — | 77 | — | 9 | 65 | 5 | — | 25 | — | — | 9 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1059 | 424 | 866 | 424 | 521 | 0 | 251 | 521 | 251 | 25 | 0 | 424 | 25 | 0 | 607 | 521 | 243 | 607 | 1693 |
Best forecast wave conditions in North West WA | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Turtles Surf forecast
The above surf forecast table for Turtles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Turtles can be found by selecting the local surf guide option on the grey menu. Our Turtles 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 (Turtles) 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 Turtles 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.











