
Surf Forecasts:
Turtles surf forecast from 15 Sep 2026:
- Best quality surf: Thursday 17 Sep, 11PM (local time) - 4ft (1.2m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 8AM (local time) - 10ft (3.0m), 16s period, WSW swell with 4,414 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 11PM (local time) - 4ft (1.2m), 14s 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 11PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.3m and 20s. 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 0.6m 4s period and expected on Sunday (Sep 20) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 17th Sep) | 4ft (1.2m) 14s |
| Best Surf | 11PM (Thu 17th Sep) | 4ft (1.2m) 14s |
| 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, let’s get into it.
The next couple of days are gonna be a bit of a write-off, to be honest. We’ve got waves, but the wind is gonna be all over it, chopping it up and making things messy. It’s one of those “look but don’t bother paddling out” situations, unless you’re desperate for a paddle and don’t mind the slop.
Wednesday the 16th is gonna be the low point – there’s swell around 6.5ft but with that cross-shore breeze and a lumpy surface, it’s not gonna be any fun. The combined energy is strong at 1471, but it’s not doing us any favors. It’s just messy. By the afternoon, the wind picks up more and it gets worse. Forget it.
Thursday and Friday are pretty similar – smaller, choppy, and onshore. Not worth the hassle. We’re looking at poor conditions across the board, with the swell dropping to 3.3ft to 4.3ft. The energy is moderate (536 to 707), but again, the wind ruins it.
Now, here’s where it gets interesting. Coming up on Saturday the 19th, there’s a proper pulse of WSW swell – 9.8ft – and the wind swings to a cross-offshore SSE direction. That’s the first real window. It’s still a bit raw and tide dependent, but you’re looking at clean conditions, especially in the morning. The combined energy is cranked right up to 3968, which is strong. This is a standout window, but it’s only for the morning. By the afternoon, the wind is back onshore and it’s messy again. So, get in early.
Sunday the 20th is similar – clean waves in the morning with 7.5ft of SW swell and that cross-offshore wind. Energy is still strong at 1810. It’s another good morning session, but again, the arvo turns to crap with a strong cross-shore.
Then we hit a lull. Monday and Tuesday are back to small, poor waves – you’re looking at 3.9ft to 5.6ft, with cross-onshore winds and choppy conditions. Not worth a second look. Just give it a miss.
The following Wednesday and Thursday (the 24th and 25th) are still a bit meh – moderate onshore winds, 4.9ft to 5.6ft, and nothing clean. The energy is moderate (789 to 1771), but it's not translating into anything good.
Now, get ready for this. Saturday the 26th, we’ve got a big one – 9.8ft of WSW swell, with a period of 18 seconds. That’s a proper groundswell. The combined energy is huge – 4733. But, and it’s a big but, it’s cross-onshore and lumpy. That’s a lot of power with bad wind. This one is for the experts only, and even then, it's going to be a battle. The morning is the only chance, but honestly, with that onshore wind, it’s going to be a mess.
The real gem, though, might just be Sunday the 27th morning. We’ve still got solid SW swell at 8.2ft, a period of 16 seconds, and the wind is back offshore from the SSE. That’s your standout. The energy is still strong at 3288. Clean, powerful lines at Turtles. That’s where you want to be.
Then we get more of the same into the early week – Monday the 28th morning has 6.9ft of SW swell with a clean cross-offshore wind. It’s still a good option, but a notch down from Sunday. The energy is moderate to strong at 1632. But the arvos are all ruined by strong winds.
By Tuesday the 29th and Wednesday the 30th, the winds turn more onshore and it’s messy again, with that long period swell breaking a bit too straight at this reef. There’s still size, but it’s not clean.
So, to sum it up: your best bets are the mornings of Saturday the 19th, Sunday the 20th, Sunday the 27th, and to a lesser extent, Monday the 28th. Those are the times when the wind cleans up and the swell is solid. The rest is mostly choppy, onshore slop. Get out early on those days and you’ll be rewarded.
And for those who are just starting out, those 8ft+ days on the 19th and 27th are pushing it. You’ll want to sit those out. Wait for the smaller, cleaner ones, but even then, the winds are iffy.
Stay stoked, and I’ll see you out there when it’s good.
Short Range ForecastMostly dry. Warm (max 24°C on Wed afternoon, min 18°C on Fri night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 16°C on Sun morning). Mainly strong winds. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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) | SW 14 | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | WSW 13 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 | WSW 12 | SW 12 | WSW 16 | WSW 16 | WSW 15 | SW 15 | WSW 14 |
Wave Graph | |||||||||||||||||||||
1471 | 1073 | 947 | 480 | 676 | 548 | 362 | 363 | 3976 | 3981 | 3241 | 2200 | 1708 | 1242 | 582 | 656 | 1953 | 2300 | 1809 | 1358 | 934 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross | cross |
High Tide | 1:07PM0.80m | 00:46AM1.20m | 1:38PM0.72m | 1:15AM1.15m | 2:12PM0.65m | 1:45AM1.08m | 3:00PM0.58m | 2:22AM1.01m | 5:28PM0.54m | 3:17AM0.94m | 5:01AM0.89m | 10:36PM0.73m | |||||||||
Low Tide | 6:08PM0.39m | 7:39AM0.23m | 6:25PM0.42m | 8:19AM0.30m | 6:39PM0.46m | 9:09AM0.37m | 6:45PM0.50m | 10:41AM0.43m | 5:52PM0.54m | 1:14PM0.42m | 2:11PM0.37m | 1:10AM0.71m | |||||||||
6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | — | 6:21 | — | — | 6:21 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 24 | 20 | 22 | 24 | 22 | 23 | 22 | 20 | 22 | 22 | 19 | 23 | 25 | 20 | 26 | 25 | 20 | 24 | 25 | 20 |
Feels °C | 21 | 21 | 17 | 21 | 23 | 22 | 21 | 18 | 16 | 19 | 17 | 14 | 18 | 20 | 14 | 22 | 20 | 16 | 20 | 20 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | WSW 13 | WSW 13 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 | WSW 12 | SW 12 | WSW 16 | WSW 16 | WSW 15 | SW 15 | WSW 14 |
1471 | 1073 | 947 | 480 | 676 | 548 | 362 | 277 | 3976 | 3981 | 3241 | 2200 | 1708 | 1242 | 582 | 656 | 1953 | 2300 | 1809 | 1358 | 934 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | WSW 16 | W 20 | W 20 | W 18 | WSW 16 | — | — | — | — | — | — | W 20 | WSW 17 | — | — | — | — | — |
— | — | — | 198 | 31 | 32 | 167 | 363 | — | — | — | — | — | — | 30 | 475 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 21 | — | — | — | — | — | — | — | — | — | — | W 10 | — | — | — | — | — | — |
— | — | — | 9 | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SSW 4 | SSW 5 | — | SW 3 | — | SW 3 | SSW 4 | — | — | SSW 5 | SSW 6 | SSE 4 | — | SSW 6 | — | SSW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 6 |
— | 22 | 24 | — | 2 | — | 3 | 12 | — | — | 47 | 154 | 12 | — | 95 | — | 36 | 69 | 40 | 47 | 135 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 500 | 241 | 545 | 7 | 241 | 1285 | 241 | 241 | 1281 | 1371 | 241 | 1693 | 424 | 422 | 980 | 424 | 241 | 1075 | 424 | 241 | 1142 |
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.










