Surf Forecasts:
Turtles surf forecast from 11 Sep 2026:
- Best quality surf: Saturday 12 Sep, 5AM (local time) - 6ft (1.8m), 18s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 12 Sep, 11AM (local time) - 7ft (2.1m), 17s period, WSW swell with 2,605 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 5AM (local time) - 6ft (1.8m), 18s 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 Saturday (Sep 12) at 5AM. The primary swell is predicted to be 1.8m and 18s period with a secondary swell of 1.0m and 13s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Turtles in the next 16 days are 2.1m 17s and forecast to arrive on Saturday (Sep 12) at 11AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 12th Sep) | 6ft (1.8m) 18s |
| Best Surf | 5AM (Sat 12th Sep) | 6ft (1.8m) 18s |
| Most Powerful | 11AM (Sat 12th Sep) | 7ft (2.1m) 17s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Alright mates, Rusty here. Let’s break it down.
We’ve got a solid run of swell on the way, but the wind is going to call the shots for most of it. The window starts a bit tame, but there’s one killer window of glassy conditions that’ll have everyone buzzing.
First up, Friday morning the 11th. It’s clean with a light westerly breeze and a 4ft swell from the WSW, but the period is a bit short at 15 seconds and the combined energy is only moderate (991). It’ll get you wet, but nothing to write home about. The afternoon turns ugly as the wind goes onshore.
Now, Saturday morning the 12th. This is the one. Turtles is a reef break for advanced crew, and it’s about to go off. We’ve got a 7ft swell from the WSW with a very long 17-second period, packing strong energy (2605). The wind? Glass. Dead calm. This is as good as it gets. The water temp is 71°F, right on average. The direction is a touch off the ideal (SSW would be perfect), but when it’s this clean and this size, you don’t care. Keep in mind, this is an advanced wave at this size – over 5ft, so beginners are out. The reef will handle that long period perfectly. Expect crowds, because this one won’t be secret.
Sunday morning the 13th is still rideable with a 6ft WSW swell (1401 energy), but the wind is cross-shore and the surface gets a bit bumpy. The afternoons through Monday and Tuesday are mostly blown out with strong cross-onshore winds.
Thursday morning the 17th offers a small reprieve – glassy start with light offshore flow, a 5ft SW swell (772 energy), and clean conditions. It’s smaller but fun for a quiet paddle.
Then a big pulse hits around Saturday the 19th. Swell jumps to a solid 10ft from the WSW with very strong energy (3918). That’s expert territory – way over 8ft. But the wind is cross-shore and fresh, making it lumpy. For the brave, there will be big, powerful lines. The period stays long, so the reef will hold.
After that, the swell stays solid but messy through to the end of the second week, with strong winds ruining the surface. There’s a small window on Thursday the 24th morning – 4ft SW swell, moderate offshore breeze, clean. A good little session, but not the highlight.
The winner is hands-down Saturday morning, September 12th at Turtles. Get out there while it’s glassy.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Fri morning, min 18°C on Sun morning). Winds increasing (calm on Fri morning, fresh winds from the SSW by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Wed morning, min 18°C on Mon morning). Winds decreasing (fresh winds from the SW on Mon afternoon, light winds from the ENE by Wed morning). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 14 | WSW 19 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | SW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 656 | 647 | 1406 | 2605 | 2133 | 1613 | 1393 | 1504 | 1484 | 1721 | 1914 | 1368 | 2004 | 1977 | 1688 | 1231 | 1105 | 898 | 763 | 658 | 412 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross | glassy | cross-on | cross | cross | cross-on | cross-off | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross | glassy | cross-on | cross-on |
High Tide | 9:56AM1.09m | 10:33PM1.05m | 10:42AM1.07m | 10:58PM1.14m | 11:23AM1.02m | 11:25PM1.21m | 12:00PM0.96m | 11:52PM1.24m | 12:35PM0.88m | 00:19AM1.24m | 1:07PM0.80m | 00:46AM1.20m | 1:38PM0.72m | 1:15AM1.15m | |||||||
Low Tide | 4:18PM0.23m | 4:33AM0.28m | 4:43PM0.26m | 5:14AM0.20m | 5:06PM0.29m | 5:52AM0.16m | 5:28PM0.33m | 6:28AM0.15m | 5:49PM0.36m | 7:04AM0.18m | 6:08PM0.39m | 7:39AM0.23m | 6:25PM0.42m | ||||||||
 | |  | | | | | | | | | |  | | | | | | | | | |
 | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — |
 | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 20 | 21 | 21 | 19 | 20 | 21 | 21 | 22 | 22 | 21 | 25 | 23 | 21 |
Feels °C | 20 | 19 | 18 | 22 | 18 | 18 | 20 | 18 | 16 | 17 | 16 | 15 | 19 | 18 | 19 | 22 | 19 | 19 | 25 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 14 | WSW 19 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | SW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 656 | 647 | 1406 | 2605 | 2133 | 1613 | 1393 | 1504 | 1484 | 1721 | 1914 | 1368 | 2004 | 1977 | 1688 | 1231 | 1105 | 898 | 763 | 658 | 412 |
Swell 2 Height (m) Direction Period (s) | W 22 | W 20 | WSW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 21 | W 20 | W 20 |
| kJ | 335 | 388 | 732 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | 31 | 31 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 4 | — | — | SSW 4 | S 4 | SSW 4 | SSW 6 | SSW 6 | — | SSW 6 | — | — | S 4 | — | SW 4 | — | — | — | SSW 4 |
| kJ | — | — | 9 | — | — | 8 | 8 | 24 | 98 | 77 | — | 74 | — | — | 7 | — | 6 | — | — | — | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 251 | 1163 | 1275 | 0 | 541 | 422 | 25 | 1281 | 545 | 799 | 898 | 1124 | 251 | 792 | 7 | 241 | 866 | 7 | 0 | 1163 | 1163 |
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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