Surf Forecasts:
Turtles surf forecast from 16 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 11AM (local time) - 10ft (3.0m), 17s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 18 Aug, 5PM (local time) - 11ft (3.5m), 17s period, WSW swell with 6,138 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 7ft (2.1m), 17s period with WSW 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 Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 2.1m and 17s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Turtles in the next 16 days are 3.5m 17s and forecast to arrive on Tuesday (Aug 18) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Aug 19) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 18th Aug) | 7ft (2.1m) 17s |
| Best Surf | 11AM (Tue 18th Aug) | 10ft (3.0m) 17s |
| Most Powerful | 5PM (Tue 18th Aug) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s coming up for Turtles.
Right off the bat, we’ve got a bit of a wait. The first few days are a total write-off. Sunday the 16th and Monday the 17th are a total mess – cross-onshore winds and poor surf conditions mean you’re better off staying home. The swell is there, but it’s not doing us any favours yet.
The real action kicks off on Tuesday morning, 18th August. This is the standout window. We’re looking at a solid 10ft swell from the WSW, and it’s a long-period groundswell at 17 seconds. That’s proper energy – the combined energy reading is a massive 4647. The water is a comfortable 72°, which is about normal for this time of year. The wind is a light ESE breeze blowing cross-offshore, keeping the surface clean. This is excellent surf, but at 10ft, it’s strictly for the experienced crew. Beginners, sit this one out.
Wednesday the 19th morning is still a solid option with 8ft WSW swell and clean conditions from a SE cross-offshore breeze. The energy is still strong at 3369. But the afternoon gets shredded by a 25 mph SSW cross-shore wind, turning it into a mess. Thursday the 20th morning is worth a look too – 8ft SW swell, clean, with a 3924 energy reading, but again, the afternoons get lumpy.
Friday the 21st through Saturday the 22nd mornings offer some hope. The swell drops to a more manageable 7ft from the SW, but the wind is offshore or cross-offshore, keeping things clean. The energy is still in the moderate-to-strong range. However, Saturday afternoon turns choppy again.
We then hit a lull. Sunday the 23rd through Monday the 24th is a mix of messy cross-shore winds and poor conditions, with the swell dropping to around 5ft. Not much to get excited about there.
But hold on. Tuesday morning, 25th August is a weird one – the swell drops to 3ft, but it’s clean. Not really worth the paddle.
Then, look to Wednesday morning, 26th August. A new 7ft WSW groundswell with a very long 18-second period rolls in, giving a strong energy reading of 3235. The wind is a clean SE cross-offshore. This is a good one, but remember, that long period means the waves will be more powerful and lined up, which is perfect for a reef like Turtles. It’s for the advanced crowd.
The absolute hidden gem, though, is Thursday morning, 27th August. The swell is still a solid 7ft from the WSW, the energy is 2195, and the wind is glass. Absolutely glassy. That’s a rare treat. The surf will be pristine. This is a serious standout for the experienced surfer.
After that, things taper off. The last few days of August and into September see dropping swell and increasing wind, with only marginal, clean mornings here and there. The afternoon seabreezes will ruin it.
So, to sum it up: Tuesday 18th morning is the big, powerful standout for experts. Thursday 27th morning is the glassy, clean gem for the same crew. The rest of the time, you’re picking through clean mornings with decent swell, but the afternoons are mostly a write-off.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 17°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Warm (max 26°C on Fri afternoon, min 15°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | SW 13 | SW 13 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 15 | WSW 14 | SW 14 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
642 | 623 | 1397 | 1851 | 1706 | 2594 | 5488 | 6138 | 4717 | 3601 | 2845 | 2546 | 3769 | 3506 | 2900 | 2348 | 2010 | 1690 | 1761 | 1554 | 1170 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross |
High Tide | 12:14PM1.05m | 00:39AM1.17m | 12:53PM0.94m | 1:08AM1.19m | 1:30PM0.84m | 1:37AM1.19m | 2:06PM0.73m | 2:08AM1.16m | 2:44PM0.64m | 2:41AM1.10m | 3:34PM0.56m | 3:22AM1.05m | 6:02PM0.50m | 4:20AM0.99m | |||||||
Low Tide | 6:12PM0.23m | 6:54AM0.26m | 6:33PM0.29m | 7:37AM0.27m | 6:52PM0.34m | 8:21AM0.31m | 7:08PM0.39m | 9:10AM0.35m | 7:20PM0.43m | 10:15AM0.40m | 7:23PM0.47m | 12:16PM0.42m | 6:22PM0.50m | ||||||||
6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | |
— | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 22 | 21 | 21 | 20 | 21 | 23 | 20 | 20 | 20 | 17 | 19 | 22 | 19 | 23 | 26 | 24 | 25 | 26 | 23 |
Feels °C | 17 | 18 | 19 | 19 | 18 | 18 | 19 | 22 | 18 | 16 | 17 | 13 | 14 | 18 | 13 | 19 | 23 | 19 | 23 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 15 | WSW 14 | SW 14 | SW 14 | SW 14 |
642 | 623 | 1397 | 1851 | 1706 | 2594 | 5488 | 6138 | 4717 | 3601 | 2845 | 2546 | 3769 | 3506 | 2900 | 2348 | 2010 | 1690 | 1761 | 1554 | 1170 | |
Swell 2 Height (m) Direction Period (s) | SSW 5 | WSW 18 | — | — | W 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 18 |
14 | 243 | — | — | 290 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 107 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NW 3 | W 3 | W 4 | — | — | — | — | — | — | — | — | SSE 4 | S 4 | S 5 | — | — | SSW 3 | — | SW 3 | SSW 5 |
— | 1 | 6 | 12 | — | — | — | — | — | — | — | — | 16 | 40 | 27 | — | — | 6 | — | 5 | 54 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 241 | 500 | 503 | 251 | 1369 | 0 | 0 | 1269 | 25 | 25 | 521 | 424 | 241 | 241 | 541 | 7 | 424 | 25 | 0 | 1059 | 424 |
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.











