Surf Forecasts:
Turtles surf forecast from 9 Aug 2026:
- Best quality surf: Thursday 13 Aug, 5AM (local time) - 6ft (1.8m), 15s period, SW swell with offshore winds.
- Most powerful swell: Sunday 9 Aug, 5PM (local time) - 10ft (3.0m), 17s period, SW swell with 5,733 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 5AM (local time) - 6ft (1.8m), 15s 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 (Aug 13) at 5AM. The primary swell is predicted to be 1.8m and 15s period with a secondary swell of 0.5m and 5s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Turtles in the next 16 days are 3.0m 17s and forecast to arrive on Sunday (Aug 09) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Aug 12) at 5AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 13th Aug) | 6ft (1.8m) 15s |
| Best Surf | 5AM (Thu 13th Aug) | 6ft (1.8m) 15s |
| Most Powerful | 5PM (Sun 9th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Turtles over the next 16 days.
The Lowdown
G'day, Rusty here again. Let’s break this down for the imperial crew.
We’re starting with no surf right now, but the goods are coming. The main event is Turtles, an advanced reef break that pumps when conditions line up. The water temp is about 74°F, which is a degree warmer than usual for this time of year—feels nice.
First proper surf hits Sunday morning, August 9th. We’ve got a big SW groundswell at 12 ft with a 17-second period. Combined wave energy is strong at (6640). Wind is a cross-off breeze from the SE at 19 mph, keeping it clean. Sunday afternoon holds at 10 ft with clean conditions and energy at (5733).
Monday the 10th morning stays clean and cross-off with a 8 ft SW swell (15 sec) and energy at (3045). But Monday afternoon turns cross-on and choppy. Tuesday the 11th has strong winds up to 25 mph but a solid 8 ft SW swell on the PM session with energy up at (3808).
The standout window kicks off Wednesday, August 12th morning. We get a proper offshore wind from the ESE at 22 mph hitting that 8 ft SW groundswell. Clean, lined up, and powerful with energy at (3097). Thursday the 13th is also offshore and clean with a 6 ft SW swell (14 sec).
The crown jewel is Monday, August 17th morning. Glassy conditions—dead calm at 3 mph from the NNE. A 7 ft WSW groundswell with a very long 18-second period. Energy is strong at (3416). For a reef, that long period is the stuff of dreams. Perfect for the experienced crew.
The middle of the second week gets messy with onshore winds and lumpy conditions up to 19 mph. Thursday, August 20th morning offers a 12 ft SW swell (15 sec) with cross-off wind cleaning it up, but energy is massive at (4829)—experts only.
The back half is bumpy with strong cross-chop through the 21st and 22nd. Sunday, August 23rd afternoon shows a moderate offshore at 12 mph hitting a 8 ft SW swell (16 sec)—clean and punchy for the late session.
Best of the lot: that glassy Monday on the 17th and the offshore Wednesday on the 12th. Keep your eyes on the wind.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 12°C on Sun morning). Winds increasing (light winds from the SW on Mon afternoon, strong winds from the SE by Tue morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Fri afternoon, min 11°C on Wed morning). Winds decreasing (fresh winds from the ESE on Wed morning, light winds from the E by Fri night). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 14 | SSW 9 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6630 | 5733 | 3903 | 2418 | 2146 | 1083 | 617 | 3808 | 3937 | 3097 | 2516 | 1563 | 1290 | 1077 | 2437 | 2135 | 1869 | 1651 | 1220 | 1163 | 865 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | on | cross-on |
High Tide | 6:15AM1.17m | 7:40AM1.19m | 10:31PM0.72m | 8:52AM1.22m | 10:51PM0.81m | 9:53AM1.22m | 11:16PM0.92m | 10:45AM1.19m | 11:43PM1.02m | 11:31AM1.13m | 00:11AM1.11m | ||||||||||
Low Tide | 1:47PM0.23m | 2:55PM0.16m | 3:43PM0.11m | 2:13AM0.61m | 4:21PM0.08m | 3:31AM0.52m | 4:54PM0.09m | 4:31AM0.42m | 5:22PM0.13m | 5:22AM0.34m | 5:48PM0.18m | ||||||||||
 | |  | | | |  | | | | | | | | | | | | | | | |
 | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 19 | 19 | 17 | 19 | 18 | 16 | 19 | 18 | 15 | 22 | 21 | 19 | 23 | 22 | 20 | 24 | 23 | 23 | 23 | 22 |
Feels °C | 7 | 12 | 14 | 12 | 15 | 13 | 7 | 10 | 10 | 5 | 14 | 14 | 11 | 17 | 15 | 15 | 20 | 19 | 20 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 14 | SSW 9 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 |
| kJ | 6630 | 5733 | 3903 | 2418 | 2146 | 1083 | 617 | 3808 | 3937 | 3097 | 2516 | 1563 | 1290 | 1077 | 2437 | 2135 | 1869 | 1651 | 1220 | 1163 | 865 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | — | W 21 | WSW 19 | NW 10 | WSW 18 | SW 13 | — | — | — | — | W 24 | WSW 21 | WSW 19 | — | — | — | — | SSW 4 | — | — |
| kJ | 10 | — | 329 | 627 | 4 | 352 | 473 | — | — | — | — | 43 | 153 | 517 | — | — | — | — | 9 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | WSW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 518 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSW 5 | SE 5 | SE 5 | SE 5 | ESE 5 | — | SSE 4 | ESE 4 | — | SSE 5 | SSE 4 | SSW 3 | SSW 4 | — | — | SSW 4 |
| kJ | — | — | — | — | — | 74 | 70 | 42 | 63 | 46 | — | 22 | 4 | — | 17 | 7 | 5 | 16 | — | — | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 424 | 25 | 25 | 241 | 1694 | 25 | 792 | 792 | 424 | 521 | 7 | 25 | 521 | 25 | 25 | 7 | 521 | 0 | 0 | 541 | 424 |
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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