
Surf Forecasts:
Turtles surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 5AM (local time) - 5.5ft (1.7m), 16s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 5AM (local time) - 8ft (2.5m), 16s period, SW swell with 3,483 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 5AM (local time) - 5.5ft (1.7m), 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 Sunday (Sep 13) at 5AM. The primary swell is predicted to be 1.7m and 16s period. 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 2.5m 16s and forecast to arrive on Saturday (Sep 19) at 5AM. 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 Saturday (Sep 19) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 13th Sep) | 5.5ft (1.7m) 16s |
| Best Surf | 5AM (Sun 13th Sep) | 5.5ft (1.7m) 16s |
| Most Powerful | 5AM (Sat 19th Sep) | 8ft (2.5m) 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 our way. It’s a bit of a mixed bag, so we gotta be patient and pick our moments.
Alright, so the overall pattern for the next 16 days is that there’s plenty of swell energy kicking around, but the wind is going to be the real story here. For a lot of the time, a cross-onshore breeze will mess things up, so it’s going to be a waiting game. Water temp is sitting at 71°, which is about average for this time of year, nothing unusual there.
The place to be is Turtles. It’s a solid reef break that needs a bit of respect – this is one for the advanced crew. It’s fairly consistent, but the crowds can be a problem, so don’t expect to have it to yourself.
Looking at the specifics, the first few days are a write-off. Saturday the 12th has a clean 7 ft swell from the WSW with a long 16-second period, and a combined energy of 2058, but that 25 km/h cross-onshore wind is gonna make it a choppy, lumpy mess. Sunday the 13th and Monday the 14th? Same story – marginal at best, with the wind just ruining the surface.
It starts to look interesting on Wednesday morning, the 16th of September. The wind drops right out to glassy conditions, which is a major win. You’ve got a 6 ft swell from the SW, still a long 14-second period, and decent energy (1408). The direction is just a tad cross-on, but with glassy water, it’s going to be clean and surfable for the experienced lot. That’s a standout window for sure.
The rest of the week fades again with increasing wind. But then, the next real window opens up on Sunday morning, the 20th of September. We get a clean 6 ft swell from the WSW with a 13-second period, but the real kicker is the cross-offshore wind from the SSE at just 15 km/h. That’s clean conditions, and the wave comment says it’s excellent for experienced surfers. It’s not massive, but it’ll be your best bet for a smooth, punching wave at Turtles.
After that, the swell sticks around, mostly between 7 ft and 8 ft, but that cross-onshore or lumpy cross-chop wind is back for days. For the advanced guys, a standout late call is Monday morning, the 21st of September. There’s a 8 ft swell from the SW with a very long 17-second period packing a ton of energy (3859), and the wind is just a light cross-on. It’s described as marginal, but for a powerful, long-period groundswell on a reef like Turtles, that’s a serious prospect if you can handle the size and the tide.
Later in the week, Wednesday the 23rd sees a clean 6 ft, and Thursday the 24th has a clean 7 ft swell with cross-offshore winds in the mornings. These are decent options for the experienced crew, but that big Monday morning is the one to circle on the calendar.
There’s a gap with no real recommendations from the 24th afternoon through the 27th as the wind just gets messy or onshore.
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Sat afternoon, min 18°C on Sun morning). Winds increasing (light winds from the SSW on Sun morning, fresh winds from the SW by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 19°C on Tue night). Winds increasing (calm on Wed morning, fresh winds from the SW by Thu afternoon). | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 16 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | WSW 15 | WSW 14 | WSW 13 | SW 13 | WSW 16 |
Wave Graph | ||||||||||||||||||||
2058 | 1613 | 1393 | 1504 | 1504 | 1676 | 1546 | 1349 | 2232 | 2085 | 1836 | 1408 | 1255 | 816 | 883 | 711 | 603 | 465 | 376 | 1104 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 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 | 2:12PM0.65m | 1:45AM1.08m | |||||||
Low Tide | 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 | 8:19AM0.30m | 6:39PM0.46m | |||||||
— | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | |
6:17 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 22 | 21 | 20 | 21 | 20 | 20 | 21 | 21 | 21 | 22 | 21 | 21 | 24 | 25 | 21 | 22 | 21 | 19 |
Feels °C | 18 | 19 | 21 | 17 | 16 | 17 | 14 | 15 | 18 | 17 | 18 | 23 | 18 | 19 | 24 | 23 | 19 | 20 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | WSW 15 | WSW 14 | WSW 13 | SW 13 | WSW 16 |
2058 | 1613 | 1393 | 1504 | 1504 | 1676 | 1546 | 1349 | 2232 | 2085 | 1836 | 1408 | 1255 | 816 | 883 | 711 | 603 | 465 | 376 | 1104 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 21 | W 21 | W 20 | W 18 | WSW 17 | SW 12 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | 34 | 31 | 165 | 372 | 442 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 3 | SSW 5 | SSW 6 | SSW 5 | SSW 6 | — | — | — | — | SW 4 | — | — | SW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 7 |
— | — | — | 7 | 87 | 92 | 73 | 108 | — | — | — | — | 12 | — | — | 15 | 13 | 48 | 64 | 261 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 243 | 7 | 7 | 1281 | 424 | 545 | 980 | 866 | 541 | 845 | 792 | 0 | 845 | 241 | 7 | 1163 | 503 | 1163 | 1269 | 1693 |
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.










