
Surf Forecasts:
Turtles surf forecast from 13 Sep 2026:
- Best quality surf: Thursday 17 Sep, 8AM (local time) - 4.5ft (1.3m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 8AM (local time) - 10ft (3.0m), 16s period, SW swell with 3,953 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 8AM (local time) - 4.5ft (1.3m), 13s period with SW 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 (Sep 17) at 8AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.5m and 16s. 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 3.0m 16s and forecast to arrive on Saturday (Sep 19) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Sep 19) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 17th Sep) | 4.5ft (1.3m) 13s |
| Best Surf | 8AM (Thu 17th Sep) | 4.5ft (1.3m) 13s |
| Most Powerful | 8AM (Sat 19th Sep) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a good look at what’s coming up for Turtles. It’s a reef setup, exposed to the swell, and it’s looking pretty solid for advanced surfers only for the majority of the run. There’s some real promise further out, but we gotta work through a fair bit of frustration to get there.
The first few days are a bit of a write-off, to be honest. A solid 6ft to 7ft WSW swell (period 15 seconds) is pushing in on Monday the 14th, but the wind is just messy – cross or cross-on from the south at 12 to 19 mph. That strong swell energy (1743) is getting chopped up. It’s gonna be lumpy and unappealing. Tuesday the 15th is much the same story with that fresh cross-on wind trashing the surface. Honestly, the first three days are almost a total loss for a clean wave.
Wednesday morning the 16th offers a small glimmer. We get a drop to around 7ft from the SW, and the wind goes light at 6 mph from the south. It’s still cross-shore, but with that light breeze we’ll get some small wind ripples rather than full-on chop. The combined energy is still strong (1494). It’s a marginal call, but *maybe* you can find a cleaner one if you’re patient.
We then hit a real lull. From late Wednesday through to the end of Friday the 18th, the swell drops out – we’re talking 4ft down to 3ft – but the wind is onshore or cross-on and strong. The energy drops into the hundreds (587-761), so it’s weak and messy. A total no-go for proper surfing.
Now, here’s where it gets interesting. Saturday morning the 19th of September. Hold onto your board. We get a big pulse of 10ft swell from the WSW with a 16-second period. That’s a very long-period groundswell, and the combined energy hits massive at 3684. That’s a serious amount of water moving. Because it’s a reef, that long period should line up nicely, but you’re looking at expert territory – 10ft is big, and these sets will pack a punch. The wind? Moderate cross-shore at 12 mph from the south. Not perfect, but with that much energy and a clean reef, it's going to be powerful. This is the standout of the whole run, hands down. Get on it early that morning if you’ve got the skill, because the afternoon gets fresh again.
Sunday morning the 20th is another decent look. The swell drops to a still-good 7ft from the SW (13 seconds), and the wind goes super light from the south-southwest at only 6 mph. That’s near-glass. The energy is still strong at 1613, and with that light breeze, Turtles could be absolutely pristine and lined up. This is your second best window.
Beyond that, it’s a bit of a mixed bag with clean sessions popping up. Tuesday morning the 22nd and Wednesday morning the 23rd both have cross-offshore winds (SSE and SE respectively), keeping the surface clean on swells around 6ft to 6ft. Conditions will be workable and much better than the early week chaos, but the swell isn’t as powerful as that weekend peak.
The final week from the 25th onward looks more onshore and lumpy again, with moderate to fresh cross-on winds. The swell stays in the 6ft to 8ft range, which has plenty of grunt, but the wind just won’t cooperate. It’s a frustrating end to a 16-day window that has a few epic moments bookended by a lot of chop.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue afternoon, min 18°C on Sun night). Winds decreasing (fresh winds from the SSW on Tue afternoon, light winds from the S by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Thu morning, min 17°C on Fri night). Winds increasing (light winds from the SSE on Thu morning, strong winds from the SW by Fri afternoon). | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 14 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 14 | WSW 14 | SW 13 | WSW 17 | SW 17 | WSW 16 | WSW 15 | WSW 14 |
Wave Graph | |||||||||||||||||||
1484 | 1676 | 1626 | 1368 | 1667 | 1644 | 2201 | 1494 | 1338 | 872 | 495 | 614 | 501 | 400 | 390 | 3717 | 3684 | 2576 | 1772 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross | cross-on | cross | cross | cross | cross-on | cross | on | cross-on | cross-on | on | cross-on | cross | cross | cross | cross-off |
High Tide | 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 | 2:12PM0.65m | 1:45AM1.08m | 3:00PM0.58m | 2:22AM1.01m | ||||||
Low Tide | 5:52AM0.16m | 5:28PM0.33m | 6:28AM0.15m | 5:49PM0.36m | 7:04AM0.18m | 6:08PM0.39m | 7:39AM0.23m | 6:25PM0.42m | 8:19AM0.30m | 6:39PM0.46m | 9:09AM0.37m | 6:45PM0.50m | |||||||
— | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | |
6:17 | — | 6:19 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 21 | 20 | 21 | 22 | 20 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 20 | 19 | 20 | 21 | 19 |
Feels °C | 16 | 17 | 16 | 16 | 17 | 18 | 17 | 22 | 19 | 21 | 20 | 20 | 20 | 21 | 14 | 14 | 16 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 14 | WSW 14 | SW 13 | WSW 12 | SW 17 | WSW 16 | WSW 15 | WSW 14 |
1484 | 1676 | 1626 | 1368 | 1667 | 1644 | 2201 | 1494 | 1338 | 872 | 495 | 614 | 501 | 400 | 268 | 3717 | 3684 | 2576 | 1772 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WSW 16 | W 20 | W 20 | W 18 | WSW 17 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 146 | 31 | 32 | 167 | 390 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 21 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | S 5 | SSW 6 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | — | — | SW 4 | — | — | SW 4 | SW 4 | SSW 4 | SSW 5 | — | SSE 4 | S 6 | SSW 6 |
78 | 67 | 52 | 78 | 121 | 135 | — | — | 10 | — | — | 13 | 8 | 20 | 103 | — | 15 | 141 | 176 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 424 | 241 | 980 | 845 | 607 | 845 | 422 | 7 | 792 | 7 | 251 | 1281 | 503 | 251 | 1075 | 1285 | 1693 | 1694 | 424 |
Best forecast wave conditions in North West WA | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










