
Surf Forecasts:
Turtles surf forecast from 11 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 5AM (local time) - 8ft (2.4m), 17s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 8PM (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 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 1.2m 5s period and expected on Tuesday (Aug 11) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 12th Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 5AM (Tue 18th Aug) | 8ft (2.4m) 17s |
| Most Powerful | 8PM (Tue 11th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Right folks, let’s have a look at what’s coming our way. The whole sixteen-day window is all about one spot: Turtles. It’s an exposed reef break that only the advanced crew should be looking at, and it’s a fairly consistent setup. The water temp is sitting at about 73°, which is pretty normal for this time of year, nothing unusual there.
The opening act kicks off Tuesday, August 11th. To be honest, the surf is there—a solid 8ft SW swell—but that 22 mph cross-off wind makes it a tough paddle. The wave energy is strong at 3715, but it’s a bit of a battle out there. It’s a marginal call at best.
Wednesday the 12th is when things start to look interesting. The morning has a clean, fresh offshore breeze from the East at 22 mph with an 8ft SW swell and heaps of energy (2941). That’s clean but still a handful. The real standout, the best on offer across the whole run, is Wednesday afternoon. We’ve got a 8ft SW groundswell with a long 16-second period, a light 16 mph offshore wind, and total wave energy at 2687. This is clean, powerful, and will be offering up some proper shaped waves for the experienced. The water is warm, the conditions are excellent—this is the one to circle.
Thursday the 13th is a step down. The morning is clean enough with a 6ft SW swell (1475 energy), but a cross-off wind keeps it from being special. By the afternoon, it goes light cross-onshore and drops off.
Friday the 14th has a bigger 7ft WSW swell (2345) on the morning with clean cross-off winds, but the set-up starts to get messy into the afternoon as a cross-shore breeze picks up. Saturday the 15th looks like a write-off with fresh cross-onshore winds and poor conditions by the afternoon.
Sunday the 16th sees the swell drop right back to 5ft. The morning has a light onshore breeze, but it’s weak. Not worth the paddle. The following week is a bit of a mixed bag. Monday the 17th is choppy and onshore. But look out for Tuesday the 18th morning. The swell jumps back up to a punchy 8ft from the WSW, with a long 16-second period and a light cross-off breeze. The wave energy is huge at 3593, and while the rating says it’s for experienced surfers only—this is a serious, powerful groundswell. It’s a close second best for the whole period, but you need your wits about you. The afternoons from there on tend to get ruined by a strong cross or onshore breeze, chopping up the lineup.
Wednesday the 19th through to the end of the month is a pattern of clean mornings with moderate to solid WSW swell (7ft to 8ft) and decent cross-off winds, which offer a window, but the afternoons are consistently poor. The mornings of the 23rd, 24th, and 25th of August will give you clean 6ft+ surf with good energy, but the crowd factor at Turtles is something to keep in mind—it does get busy.
The very end of the run, Wednesday the 26th of August, sees the energy dropping to 1137 and the swell fading to 5ft. You can still get a wave, but the magic is gone.
So, the clear winner is Wednesday afternoon, August 12th. The runner-up is Tuesday morning, August 18th. Everything else is a case of picking the clean morning windows and getting out before the wind turns.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Wed afternoon, min 11°C on Wed morning). Winds decreasing (fresh winds from the SE on Tue afternoon, light winds from the NE by Thu afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 24°C on Fri afternoon, min 18°C on Sat morning). Winds decreasing (fresh winds from the SSW on Sat afternoon, light winds from the WNW by Sun morning). | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 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 | WSW 15 | WSW 16 | WSW 17 |
Wave Graph | ||||||||||||||||||||
3715 | 3756 | 2941 | 2687 | 1563 | 1325 | 1486 | 2111 | 2296 | 2580 | 1672 | 1254 | 1382 | 877 | 632 | 623 | 1811 | 2237 | 2136 | 3212 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | on | on | on | cross-on | cross-on | cross |
High Tide | 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 | 12:53PM0.94m | 1:08AM1.19m | |||||||
Low Tide | 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 | 6:54AM0.26m | 6:33PM0.29m | ||||||||
— | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | |
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 20 | 19 | 16 | 23 | 22 | 21 | 23 | 21 | 21 | 24 | 21 | 23 | 24 | 21 | 21 | 22 | 21 | 20 | 21 | 20 |
Feels °C | 11 | 11 | 6 | 16 | 16 | 13 | 19 | 14 | 16 | 19 | 15 | 18 | 19 | 16 | 20 | 19 | 18 | 18 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | 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 | WSW 15 | WSW 16 | WSW 17 |
3715 | 3756 | 2941 | 2687 | 1563 | 1325 | 1486 | 2111 | 2296 | 2580 | 1672 | 1254 | 1382 | 877 | 632 | 623 | 1811 | 2237 | 2136 | 3212 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 23 | WSW 21 | NNE 4 | — | S 6 | — | — | S 6 | — | — | SSW 5 | WSW 18 | — | — | W 20 | — |
— | — | — | — | 43 | 150 | 6 | — | 49 | — | — | 41 | — | — | 21 | 243 | — | — | 388 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | ESE 4 | — | SE 4 | NE 4 | — | S 5 | — | S 4 | S 6 | — | — | S 5 | — | SSW 5 | SW 4 | SSW 5 | SSW 5 | SSW 4 |
22 | 60 | 46 | — | 26 | 21 | — | 73 | — | 27 | 110 | — | — | 46 | — | 11 | 19 | 39 | 24 | 16 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1694 | 424 | 521 | 0 | 25 | 422 | 241 | 25 | 25 | 792 | 25 | 25 | 1059 | 241 | 243 | 541 | 917 | 1281 | 1109 | 7 |
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.











