Surf Forecasts:
Turtles surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8AM (local time) - 8ft (2.4m), 16s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 11AM (local time) - 8ft (2.5m), 16s period, WSW swell with 3,369 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 5AM (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 Thursday (Aug 20) at 5AM. 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 16s and forecast to arrive on Wednesday (Aug 19) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 19) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 20th Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 8AM (Thu 20th Aug) | 8ft (2.4m) 16s |
| Most Powerful | 11AM (Wed 19th Aug) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Alright, Rusty here, checking out what’s coming for the Turtles area. We’ve got a consistent run of south-west groundswell, but the wind’s gonna be a real pain in the neck at times. You gotta pick your windows.
Water temp is about 75°F, which is exactly what you’d expect for this time of year.
The one to beat is Thursday morning, August 20th. There’s a solid 8ft swell from the WSW with a 16-second period, and the wind is light offshore out of the east. That’s going to be glassy clean at Turtles. The combined energy is strong at 3192, so there’s a ton of power in the water. This is an advanced reef break, so leave the foam boards at home. The swell direction is spot on for this spot, and with that long period, it’s gonna be a proper show. Expect a crowd.
Tuesday morning, September 1st, is another big one to watch. The swell hits nearly 10ft from the WSW, again with a 16-second period. The wind is a moderate offshore from the SE, keeping things clean. The energy is pumping hard at 3798, making this a heavy, expert-only session. The size will keep the numbers down, so if you’re good enough, you’ll have some room.
There are a few other decent windows. Wednesday morning, September 2nd, has a 7ft WSW swell with a light offshore from the ESE, which will be clean and fun. And even late in the run, on Sunday, August 30th, there’s a 5ft WSW swell with a super long 17-second period and a moderate offshore breeze, giving you clean, powerful lines.
The afternoons get blown out by strong southerly winds, so don’t bother. Stick to the mornings.
The standout is Thursday morning, August 20th. Get on it.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Wed night. Warm (max 24°C on Wed afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the SSE on Wed night, calm by Fri afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 16°C on Sun night). Winds increasing (light winds from the S on Sat morning, fresh winds from the S by Sun afternoon). | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | SW 15 | SW 15 | WSW 15 | SW 14 | SW 14 | SW 16 | SW 16 | SW 14 | WSW 16 | WSW 15 | SW 14 | SW 13 | SW 13 | SW 12 | WSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3369 | 2546 | 2206 | 3192 | 3152 | 2663 | 2148 | 2065 | 1714 | 1407 | 1170 | 1531 | 993 | 742 | 724 | 1102 | 1463 | 721 | 604 | 428 | 263 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | glassy | off | glassy | on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 2:06PM0.73m | 2:08AM1.16m | 2:44PM0.64m | 2:41AM1.10m | 3:34PM0.56m | 3:22AM1.05m | 6:02PM0.50m | 4:20AM0.99m | 5:46AM0.96m | 7:17AM0.98m | 10:47PM0.73m | ||||||||||
Low Tide | 8:21AM0.31m | 7:08PM0.39m | 9:10AM0.35m | 7:20PM0.43m | 10:15AM0.40m | 7:23PM0.47m | 12:16PM0.42m | 6:22PM0.50m | 2:11PM0.37m | 3:01PM0.31m | 3:32PM0.26m | 2:14AM0.67m | |||||||||
 |  |  |  | |  | |  |  | | | | | | | | | | | | | |
 | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — |
mm | — | — | 7 | 1 | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 24 | 18 | 18 | 19 | 19 | 20 | 22 | 21 | 21 | 21 | 21 | 20 | 21 | 19 | 20 | 23 | 19 | 20 | 22 | 19 |
Feels °C | 17 | 22 | 14 | 18 | 20 | 20 | 21 | 24 | 21 | 21 | 20 | 18 | 15 | 15 | 13 | 15 | 19 | 14 | 16 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | SW 15 | SW 15 | WSW 15 | SW 14 | SW 14 | SW 16 | SW 16 | SW 14 | WSW 16 | WSW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 |
| kJ | 3369 | 2546 | 2206 | 3192 | 3152 | 2663 | 2148 | 2065 | 1714 | 1407 | 1170 | 1531 | 993 | 742 | 724 | 1102 | 1463 | 721 | 604 | 428 | 224 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 18 | — | — | — | — | W 26 | WSW 22 | WSW 19 | WSW 18 | — | WSW 20 | WSW 18 | SW 13 | SSW 7 | — | — | — | — | WSW 15 |
| kJ | — | — | 842 | — | — | — | — | 13 | 47 | 637 | 823 | — | 127 | 329 | 437 | 77 | — | — | — | — | 263 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 24 |
| kJ | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 |
Wind waves Height (m) Direction Period (s) | SSE 4 | S 4 | S 4 | — | — | — | — | — | — | — | — | SSW 4 | SSW 7 | SSW 6 | SSW 6 | SE 4 | S 4 | S 5 | SSW 6 | SSW 5 | SSW 6 |
| kJ | 13 | 11 | 15 | — | — | — | — | — | — | — | — | 36 | 200 | 164 | 188 | 11 | 19 | 92 | 52 | 47 | 98 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 541 | 7 | 0 | 0 | 0 | 0 | 1059 | 422 | 241 | 1073 | 1059 | 915 | 1059 | 424 | 25 | 1269 | 424 | 241 | 1081 | 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.
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