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 4,513 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 1.1m 5s period and expected on Friday (Aug 28) at 5AM.
| 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 folks, Rusty here. Let’s have a look at what we’ve got coming up for Turtles. This is a solid advanced reef set-up, and it’s exposed to the south-west swell, so it takes a good lick of energy. The whole 16-day run is pretty much one long, lumpy story with a few cleaner windows, but nothing that screams "perfect." The standout will be Thursday the 27th of August, with another promising window on the 1st of September.
The water temp is about average for the time of year, nothing weird there.
We start things off on Saturday the 22nd of August. The morning brings a 6ft south-west swell with a 14-second period, but the wind is a cross-on south-westerly at 12 mph. The combined energy is strong (2305), but the surface is choppy, and the score is a dud. The afternoon is worse with the wind picking up to 16 mph cross-on. Skip it.
Sunday the 23rd is a little better. The morning has a 5ft south-west swell (16-second period) and a clean surface thanks to a cross-off wind from the south-south-east at 16 mph. The energy is moderate (1361). It’s still marginal, but it’s the cleanest we’ve seen. The afternoon gets trashed by a strong 22 mph south cross-shore.
Monday the 24th is similar – morning clean with a 6ft west-south-west swell (15 seconds) and cross-off south-easterly at 12 mph (energy 1432). The afternoon turns lumpy again.
Tuesday the 25th and Wednesday the 26th are average. The real standout is Thursday the 27th of August. Both morning and afternoon are clean. The morning has an 8ft west-south-west swell, 16-second period, and a strong cross-off south-easterly at 25 mph. The energy is very strong (3147). That’s a big, clean groundswell pushing in. The afternoon is even better with the same 8ft swell, 16-second period, and a clean cross-off at 19 mph, with energy hitting 3483. This is big, powerful, long-period swell. At 8ft, this is expert territory only. It’s a reef, so it should handle that long period well, but be ready for some serious juice. Crowds are likely here.
Friday the 28th of August sees the swell drop to 6ft and the wind goes offshore from the east-south-east at 22 mph in the morning. The surface is clean (energy 1418), but it’s marginal. The afternoon drops off.
The first few days of September look mixed. Tuesday the 1st of September has a 7ft west-south-west swell with a 17-second period, but the wind is a cross-shore north-westerly at 12 mph, making it lumpy. The energy is strong (2507), but the wind kills it. Not a standout.
From the 2nd of September onwards, the wind is mostly cross or cross-on, and the swell drops. The 6th of September is the last day with a clean morning (5ft, 14-second west-south-west swell, energy 1058), but it’s marginal.
Overall, the best bet is Thursday the 27th of August. The morning and afternoon are both clean with a big, powerful, long-period groundswell. If you’re an expert, that’s your window. The rest of the run is a battle with the wind.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Fri night. Warm (max 22°C on Fri night, min 16°C on Sun night). Winds decreasing (fresh winds from the S on Sun afternoon, light winds from the S by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 16°C on Mon night). Winds increasing (light winds from the SSW on Tue afternoon, strong winds from the SE by Thu morning). | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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 | SW 14 | SW 14 | WSW 16 | SW 16 | SW 14 | WSW 14 | WSW 15 | SW 14 | WSW 14 | SW 13 | SW 12 | WSW 15 | WSW 14 | WSW 19 | WSW 17 | WSW 16 | SW 16 | WSW 14 |
Wave Graph | |||||||||||||||||||
1714 | 1533 | 1253 | 1677 | 1178 | 1238 | 961 | 1368 | 1704 | 1005 | 746 | 540 | 537 | 1005 | 3749 | 4409 | 2999 | 3483 | 1604 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 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 | |||||||||
— | 6:47 | — | — | 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 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 21 | 20 | 20 | 21 | 18 | 18 | 21 | 19 | 20 | 23 | 19 | 20 | 22 | 20 | 18 | 23 | 21 |
Feels °C | 21 | 20 | 19 | 17 | 16 | 16 | 13 | 15 | 18 | 13 | 15 | 20 | 14 | 16 | 18 | 17 | 10 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | SW 14 | SW 14 | WSW 16 | SW 16 | WSW 18 | WSW 14 | WSW 15 | SW 14 | WSW 14 | SW 13 | SW 12 | WSW 15 | WSW 14 | WSW 19 | WSW 17 | WSW 16 | SW 16 | WSW 14 |
1714 | 1533 | 1253 | 1677 | 1178 | 109 | 961 | 1368 | 1704 | 1005 | 746 | 540 | 537 | 1005 | 3749 | 4409 | 2999 | 3483 | 1604 | |
Swell 2 Height (m) Direction Period (s) | — | WSW 19 | WSW 18 | — | SSW 7 | WSW 18 | — | — | — | — | WSW 20 | WSW 18 | SW 12 | WSW 21 | — | — | — | — | — |
— | 772 | 877 | — | 108 | 243 | — | — | — | — | 37 | 174 | 303 | 151 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | WSW 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | 75 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NW 4 | — | — | SSW 4 | — | SW 14 | SSW 7 | S 6 | — | S 5 | S 5 | SSW 4 | SSW 5 | SSW 5 | SSW 4 | S 4 | S 6 | — | S 6 |
18 | — | — | 29 | — | 1238 | 163 | 64 | — | 53 | 45 | 34 | 39 | 29 | 18 | 36 | 148 | — | 240 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 243 | 521 | 1277 | 1059 | 980 | 916 | 422 | 25 | 963 | 422 | 25 | 1275 | 1269 | 1281 | 1693 | 902 | 545 | 1059 | 521 |
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.











