Surf Forecasts:
Turtles surf forecast from 21 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 11PM (local time) - 10ft (3.0m), 17s period, WSW swell with 4,959 kJ wave energy.
Best Forecast Surf Conditions for Turtles this week:
The most powerful waves expected at Turtles in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Aug 26) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Friday (Aug 28) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Wed 26th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Alright, let’s break it down for you in feet and miles per hour, Rusty style.
The outlook for Turtles is a real rollercoaster. There’s plenty of juice in the water, but the wind is going to be a constant headache.
Starting off on Friday the 21st, we’ve got a solid 7ft swell out of the WSW with a long 15-second period. The combined energy is strong (2043), but it’s not a perfect setup. The morning has a cross-offshore breeze from the NE at 12 mph, so it’s clean, but it’s still only a marginal call. The water is 72°, pretty normal for the time of year. Friday afternoon swings cross-on from the NNW, and that’ll mess it up.
Saturday the 22nd is a total loss. The morning has a 6ft swell with onshore wind, and the afternoon gets uglier with a 6ft swell and a strong cross-on, making it a choppy mess.
Sunday the 23rd gives us a little hope in the morning. We’ve got a 6ft swell from the SW with a nice 16-second period (moderate energy at 1549) and a cross-off wind from the SSE. It’s clean, but still marginal. The afternoon though, a 22 mph S wind turns it into lumpy, cross-shore crap.
Monday the 24th: The morning swell drops a bit to 6ft (WSW, 15s) with a cross-off breeze from the SE. Clean, but only marginal. The afternoon goes south again with a fresh S wind.
Tuesday the 25th is small. The morning has a 5ft swell (845 energy) with a gentle cross-off, clean but weak. Afternoon is out with strong cross-winds.
Wednesday the 26th: The morning bump is back to 6ft (WSW, 14s) with 1265 energy, but it’s cross-shore, so a bit of chop. The afternoon, though, is for the brave. The swell jumps to 8ft from the WSW with a very long 19-second period, and the energy is massive at 4148. But, the wind is a moderate cross-onshore, making it choppy. At that size, it’s for experts only, and honestly, with that onshore wind, it might be better for the kite surfers.
Thursday the 27th: An 8ft (WSW, 16s) morning swell with serious energy (3304) and a strong cross-off from the SSE. Big and clean, but only for the experienced. The afternoon goes messy.
Friday the 28th and into September, it’s the same tune: decent swell (6ft to 8ft) but wind is always the problem. The morning of Saturday the 29th of August is a little bright spot: a 5ft (SW, 13s) swell with a fresh offshore from the E. Clean, low energy (683), but a proper session. The afternoon of the 29th is even better: only 4ft, but a moderate offshore from the ESE and clean conditions. That’s your pick for the first week.
Into September, we’ve got another big pulse. On the 1st of September (Tuesday), an 8ft (WSW, 17s) swell with 3963 energy, but a light cross-onshore kills the perfection. The 4th of September morning is a standout: a 7ft (WSW, 17s) swell, clean cross-off from the SE, and massive energy (3025). That’s one to mark on the calendar for the big-wave guys, but it’s two weeks out, so stay tuned.
The true standouts are the afternoon of Saturday the 29th of August for a clean, small-wave day, and the morning of Thursday the 4th of September for the expert crew. Turtles is a reef break for advanced surfers, fairly consistent, but it gets crowded often, so don’t expect a quiet lineup. The long-period swells will give good shape and power, but the wind is the make-or-break factor here.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri morning. Warm (max 23°C on Fri afternoon, min 16°C on Sun night). Winds increasing (light winds from the NW on Fri night, fresh winds from the S by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 15°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | WSW 15 | WSW 15 | WSW 15 | WSW 14 | SW 14 | WSW 16 | SW 16 | SW 14 | WSW 14 | WSW 15 | WSW 14 | SW 14 | SW 13 | SW 12 | WSW 15 | WSW 14 | WSW 19 | WSW 17 | WSW 16 | WSW 16 | SW 15 |
Wave Graph | |||||||||||||||||||||
2043 | 1809 | 1714 | 1447 | 1170 | 1677 | 1474 | 1238 | 947 | 1368 | 1447 | 1073 | 746 | 657 | 468 | 1019 | 4148 | 4902 | 3304 | 2999 | 3181 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross-on | cross | cross-off | cross | cross-off |
High Tide | 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 | 9:15AM1.05m | 10:47PM0.87m | ||||||||||
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 | 4:20PM0.20m | 3:58AM0.51m | |||||||||
6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | |
— | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | |
mm | 2 | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 23 | 22 | 21 | 21 | 21 | 20 | 21 | 19 | 18 | 21 | 18 | 20 | 23 | 19 | 19 | 20 | 19 | 19 | 22 | 20 |
Feels °C | 18 | 21 | 23 | 22 | 20 | 18 | 16 | 16 | 14 | 14 | 17 | 13 | 16 | 20 | 14 | 17 | 17 | 15 | 13 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 15 | WSW 15 | WSW 14 | SW 14 | WSW 16 | SW 16 | SW 14 | WSW 14 | WSW 15 | WSW 14 | SW 14 | SW 13 | SW 12 | SW 12 | WSW 14 | WSW 19 | WSW 17 | WSW 16 | WSW 16 | SW 15 |
2043 | 1809 | 1714 | 1447 | 1170 | 1677 | 1474 | 1238 | 947 | 1368 | 1447 | 1073 | 746 | 657 | 355 | 1019 | 4148 | 4902 | 3304 | 2999 | 3181 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | WSW 19 | WSW 18 | — | WSW 20 | WSW 18 | — | SSW 6 | — | — | S 5 | WSW 18 | WSW 15 | W 21 | — | — | — | — | — |
— | — | — | 772 | 877 | — | 75 | 109 | — | 70 | — | — | 25 | 106 | 468 | 231 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | WSW 19 | — | W 24 | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | 74 | — | 12 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 3 | N 4 | NW 4 | WNW 4 | — | SSW 4 | — | — | SSW 7 | SE 4 | SSW 4 | S 5 | — | SSW 4 | SSW 5 | S 5 | — | — | — | SSW 4 | — |
6 | 9 | 10 | 6 | — | 18 | — | — | 145 | 3 | 22 | 42 | — | 15 | 29 | 15 | — | — | — | 14 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 241 | 243 | 243 | 251 | 1277 | 1059 | 980 | 1075 | 424 | 7 | 545 | 422 | 25 | 1275 | 1269 | 7 | 916 | 920 | 424 | 241 | 541 |
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.











