
Surf Forecasts:
Turtles surf forecast from 16 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, 11AM (local time) - 10ft (3.0m), 15s period, WSW swell with 4,374 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 15s and forecast to arrive on Saturday (Sep 19) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Sep 20) at 5AM.
| 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 | 11AM (Sat 19th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’m gonna level with you straight up – the next 16 days at Turtles are a real mixed bag, and honesty, mostly a frustrating one. We get some serious size rolling in, but the wind is just a nightmare for most of it. The water temp is sitting right on 71°, which is bang on average for this time of year, so no complaints there.
Let’s start with what’s on the table. The first few days are a write-off. The swell shows up, but it’s all cross-on shore winds making a mess of things. We’ve got solid energy, like on Wednesday the 16th afternoon with 6ft SW swell and a combined energy of 1233, but that fresh cross-onshore wind just kills it. Thursday and Friday are much the same story – lumpy, choppy, poor conditions.
Then we get to Saturday the 19th. The swell kicks up proper – 10ft from the WSW with a period of 15 seconds, and the combined energy is a massive 4374 in the morning. But mate, the wind is still cross-shore, and it’s a “moderate cross-shore with a cross-chop.” It’s marginal at best, and it's big. 10ft is expert territory only, and with that cross-chop, it’s gonna be a battle.
Now, Sunday the 20th morning is where we get our first real glimpse. We’ve got 8ft SW swell (period 13 seconds) and a combined energy of 1932. The wind is cross-offshore from the SSE, and the report says “clean.” That’s the first genuinely clean surf window. It’s still a decent size, maybe a bit much for beginners, but for the crew who can handle it, that’s your window.
We then hit another dry spell. Monday through the end of the week is back to cross and cross-on winds, lumpy and choppy. There’s energy there, but it’s not worth paddling out for.
But hold on, because we’ve got a couple of standouts in the second week. Friday the 25th morning – wait, that’s more than a week away, on September 25th. The swell is 4ft from the WSW, but the period is a very long 21 seconds, and the combined energy is 2501. The wind is cross-shore, and it’s “moderate cross-shore with a cross-chop.” That long period means it’s gonna be powerful, but that cross-chop might make it tricky at a reef. It’s marginal, but the energy is there.
The real highlight for the entire forecast is Wednesday the 30th morning. We’ve got a solid 8ft SW swell, with a very long period of 17 seconds, and a combined energy of 3630. The wind is a gentle cross-offshore from the SSE, and the report says “clean.” That is the best looking window of the whole 16 days. That’s proper groundswell, clean conditions, and a decent size. For advanced surfers, that is the day to circle on the calendar. It’s a long way out, so keep an eye on it, but it’s the one.
Overall, there’s plenty of swell energy coming through, but the wind just won’t play ball for most of it. The consistency of the break itself is “fairly consistent,” so it’s not like the waves aren’t gonna be there, they just won’t be clean. The pick of the bunch is that Wednesday the 30th morning session.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 18°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sun afternoon, min 17°C on Sat night). Mainly strong winds. | |||||||||||||||||||
Wed 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||
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 13 | SW 14 | SW 14 | SW 13 | WSW 17 | WSW 17 | WSW 15 | WSW 15 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 |
Wave Graph | ||||||||||||||||||||
1233 | 947 | 480 | 676 | 431 | 400 | 367 | 1175 | 4374 | 3973 | 3326 | 1932 | 1117 | 702 | 576 | 1977 | 2096 | 1592 | 1261 | 947 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | cross | cross | cross-on | cross-off | cross | cross | cross |
High Tide | 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 | ||||||||
— | — | 6:20 | — | — | 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 | 20 | 22 | 25 | 22 | 27 | 23 | 21 | 22 | 23 | 19 | 23 | 26 | 20 | 24 | 23 | 20 | 23 | 23 | 20 |
Feels °C | 20 | 17 | 21 | 23 | 21 | 25 | 19 | 18 | 19 | 19 | 14 | 19 | 22 | 14 | 20 | 18 | 15 | 19 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | SW 13 | WSW 12 | WSW 17 | WSW 15 | WSW 15 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 13 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 |
1233 | 947 | 480 | 676 | 431 | 400 | 273 | 1175 | 4374 | 3973 | 3326 | 1932 | 1117 | 702 | 538 | 1977 | 2096 | 1592 | 1261 | 947 | |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 16 | W 20 | W 20 | W 18 | WSW 17 | WSW 12 | — | — | — | — | W 11 | W 19 | WSW 17 | — | — | — | — | — |
— | — | 198 | 31 | 32 | 167 | 367 | 390 | — | — | — | — | 2 | 30 | 576 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | W 21 | — | — | — | — | — | — | — | — | — | — | W 10 | W 10 | — | — | — | — | — |
— | — | 9 | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SSW 4 | — | — | — | — | SW 4 | SSW 5 | — | — | S 5 | — | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 |
— | 18 | — | — | — | — | 16 | 48 | — | — | 66 | — | 61 | 98 | 69 | 47 | 87 | 49 | 82 | 140 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 845 | 7 | 241 | 1163 | 0 | 1155 | 1233 | 1275 | 241 | 1694 | 424 | 241 | 916 | 424 | 241 | 1275 | 521 | 241 | 1075 | 541 |
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.










