Surf Forecasts:
Turtles surf forecast from 20 Aug 2026:
- Best quality surf: Friday 21 Aug, 2AM (local time) - 7.5ft (2.3m), 16s period, WSW swell with offshore winds.
- Most powerful swell: Wednesday 26 Aug, 8PM (local time) - 8ft (2.5m), 19s period, WSW swell with 5,170 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 2AM (local time) - 7.5ft (2.3m), 16s 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 Friday (Aug 21) at 2AM. 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 2.5m 19s and forecast to arrive on Wednesday (Aug 26) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Friday (Aug 28) at 2AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 21st Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 2AM (Fri 21st Aug) | 7.5ft (2.3m) 16s |
| Most Powerful | 8PM (Wed 26th Aug) | 8ft (2.5m) 19s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming our way.
The outlook starts shaky, with surf arriving on Friday August 21st but the conditions are a bit of a mess through the weekend. The real standout window, the one you wait for, is Tuesday September 1st and then a big, powerful pulse on Thursday September 3rd.
Turtles sees a long-period WSW swell on Friday morning at 7 ft, with clean conditions from an ENE cross-off wind. The combined swell energy is moderate at 2043. It’s an advanced reef break and fairly consistent, but the afternoon wind shifts cross-on and drops the quality. Saturday and Sunday keep the swell around 5 ft to 6 ft, but winds are messy – cross-on or cross-shore with chop.
The next clear run starts Monday morning August 24th, with a 6 ft WSW swell and clean cross-off wind energy (1601). Through to Wednesday August 26th, mornings are your friend, but afternoons get chopped out. Thursday August 27th sees a jump in size to a solid 10 ft SW swell, but with fresh cross-shore winds, it’s lumpy and only for experts – the energy is a strong 4229. Friday August 28th morning is clean again, 7 ft WSW.
Saturday August 29th morning, with a light SSE cross-off, gives clean 5 ft SW swell, but the real prize is a few days out. The water temperature is about average for the time of year here at Turtles.
The standout. Tuesday September 1st morning is the one. An 8 ft WSW swell running at a 16-second period with a light ESE offshore wind. Glassy, clean, and the swell energy is 3156 – that’s strong, proper groundswell for this reef. It’s long-period, which will offer well-shaped, powerful waves with longer lulls. This is an expert break, so only experienced surfers should paddle out. There are possible crowds here.
Wednesday September 2nd morning stays clean with a smaller 6 ft WSW swell. Then Thursday September 3rd morning swings through with a huge 10 ft WSW swell and a very long 19-second period. The combined energy is a very strong 7282. The wind is a gentle cross-shore, so it’s not clean perfection, but the raw power and period mean this reef will be absolutely pumping with big, grinding waves. This is deep water for experts only. After that, Friday September 4th and Saturday September 5th drop off quickly with strong, messy winds and smaller surf.
The second week starts promising with that Tuesday morning surf, then fades. Keep your eyes on Tuesday September 1st morning for the cleanest, most user-friendly day for the advanced crew, and Thursday September 3rd for sheer size and power for the hardcore.
Rusty, signing off.
Short Range ForecastModerate rain (total 13mm), heaviest on Thu night. Warm (max 23°C on Fri afternoon, min 17°C on Thu night). Winds increasing (calm on Fri night, fresh winds from the S by Sun afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue afternoon, min 15°C on Mon morning). Winds decreasing (fresh winds from the SSE on Sun night, light winds from the SW by Tue afternoon). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | WSW 16 | WSW 15 | WSW 15 | WSW 15 | SW 14 | SW 14 | WSW 16 | SW 16 | SW 14 | WSW 15 | WSW 15 | SW 14 | WSW 14 | SW 13 | SW 12 | WSW 16 | WSW 15 | WSW 16 | WSW 17 |
Wave Graph  | |||||||||||||||||||
 kJ | 2663 | 2043 | 1963 | 1714 | 1321 | 1170 | 1677 | 1178 | 731 | 974 | 1507 | 1863 | 1005 | 746 | 607 | 392 | 1258 | 2262 | 4731 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-on | glassy | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | cross | cross-on | cross-on |
High Tide | 2:41AM1.10m | 3:34PM0.56m | 3:22AM1.05m | 6:02PM0.50m | 4:20AM0.99m | 5:46AM0.96m | 7:17AM0.98m | 10:47PM0.73m | 8:24AM1.01m | 10:38PM0.79m | |||||||||
Low Tide | 10:15AM0.40m | 7:23PM0.47m | 12:16PM0.42m | 6:22PM0.50m | 2:11PM0.37m | 3:01PM0.31m | 3:32PM0.26m | 2:14AM0.67m | 3:58PM0.22m | 3:15AM0.60m | |||||||||
 |  |  |  |  |  |  | | | | | | | | | | | | | |
 | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — |
 | 6:09 | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — |
mm | 12 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 21 | 23 | 21 | 22 | 21 | 21 | 20 | 21 | 19 | 18 | 22 | 19 | 22 | 25 | 20 | 20 | 20 | 19 |
Feels °C | 18 | 20 | 24 | 22 | 22 | 19 | 18 | 15 | 14 | 14 | 14 | 18 | 13 | 18 | 22 | 17 | 19 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 15 | WSW 15 | WSW 15 | SW 14 | SW 14 | WSW 16 | SW 16 | SW 14 | WSW 15 | WSW 15 | SW 14 | WSW 14 | SW 13 | SW 12 | SW 12 | WSW 15 | WSW 16 | WSW 17 |
| kJ | 2663 | 2043 | 1963 | 1714 | 1321 | 1170 | 1677 | 1178 | 731 | 974 | 1507 | 1863 | 1005 | 746 | 607 | 355 | 1258 | 2262 | 4731 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | WSW 19 | WSW 18 | — | WSW 20 | WSW 18 | — | — | — | — | SSW 6 | — | WSW 16 | — | WSW 20 | — |
| kJ | — | — | — | — | 637 | 877 | — | 75 | 109 | — | — | — | — | 60 | — | 392 | — | 1152 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 24 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 4 | S 5 | SSW 5 | SSW 6 | S 7 | S 4 | S 5 | — | SSW 6 | SSW 5 | SSW 5 | — | SSW 4 |
| kJ | — | — | — | — | — | — | 30 | 48 | 117 | 147 | 94 | 20 | 90 | — | 52 | 30 | 19 | — | 22 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 243 | 902 | 0 | 251 | 1277 | 1059 | 1059 | 1693 | 424 | 7 | 1269 | 424 | 25 | 1277 | 424 | 25 | 1059 | 1059 |
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.
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