Surf Forecasts:
Cobblestones surf forecast from 27 Aug 2026:
- Best quality surf: Saturday 29 Aug, 11PM (local time) - 10ft (3.0m), 17s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 30 Aug, 5AM (local time) - 11ft (3.5m), 18s period, SW swell with 7,093 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11PM (local time) - 10ft (3.0m), 17s period with SW swell.
Best Forecast Surf Conditions for Cobblestones this week:
The surf forecast for Cobblestones over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 29) at 11PM. The primary swell is predicted to be 3.0m and 17s period with a secondary swell of 0.5m and 22s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 3.5m 18s and forecast to arrive on Sunday (Aug 30) 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 1.4m 6s period and expected on Friday (Aug 28) at 5AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 29th Aug) | 10ft (3.0m) 17s |
| Best Surf | 11PM (Sat 29th Aug) | 10ft (3.0m) 17s |
| Most Powerful | 5AM (Sun 30th Aug) | 11ft (3.5m) 18s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get stuck into what's on the cards for our local stretch.
The wave energy is kicking off with a bang, but it’s a bit of a mixed bag for the first few days. Thursday and Friday have some solid size but the wind is messy, making it a tough call. The real standout is shaping up for Saturday the 29th and Sunday the 30th – that’s where you want to be. The water is sitting at 66°F, which is a touch warmer than usual for this time of year, so the wetsuit might feel a little more forgiving.
Let’s talk about the main event. Cobblestones is the only spot on the radar, and it’s a consistent, advanced reef break that loves a SSW swell. The optimum swell direction is from the SSW, so we’re in the sweet spot for a lot of this period. The combined swell energy is pumping, hitting a massive 6601 (moderate to strong energy) on Thursday morning, but the cross-shore wind from the SSE at 16 mph is going to put a bit of a chop on it. The morning on Thursday the 27th is the best of a bad bunch early on, with 13 ft of SW swell at a 15-second period, but the score is low due to marginal conditions.
Friday the 28th sees the swell drop a little to 8 ft, but the morning session has a cleaner look with a cross-offshore breeze from the SE at 12 mph. The energy is still strong at 1655. It’s not perfect, but it’s the pick of the first few days.
Now, the real highlight. Come Saturday the 29th, we’ve got a 7 ft SW swell in the morning, but the afternoon is where it’s at. The wind swings to the east at 12 mph and goes offshore, cleaning up a 10 ft SW swell with a very long 17-second period. The combined energy is a solid 5223. This is expert territory, but the conditions are exceptional for those who can handle it. The long period means the waves will have plenty of power and shape, though sets will be spaced out. Sunday the 30th morning is also a cracker: 12 ft SW swell, 17-second period, and a cross-offshore breeze from the NE at 9 mph. Energy is a massive 6719. Clean, big, and powerful.
Unfortunately, the good times don’t last. From Monday the 31st onwards, the wind turns onshore and the conditions get messy. The swell stays big, but the cross-onshore and onshore winds from the WNW and W will make for choppy, lumpy, and poor surf. There’s a long stretch of poor conditions from Monday right through to the following Wednesday, with a few days of marginal or poor scores. The wind just doesn’t play ball.
The second week has a couple of interesting blips, but nothing clean. On the 4th of September, the swell pumps up to 25 ft from the WSW, but it’s too big for Cobblestones and the onshore wind is howling. The 5th of September morning has a 18 ft SW swell with a lighter cross-shore wind from the south at 9 mph, and it’s scored a 7, but the conditions are still described as marginal. The 7th of September afternoon sees a 16 ft SW swell with a 15-second period and a light onshore wind, but it’s a tricky one. The 10th of September has some 13 ft WSW swell with a long 16-second period and a cross-onshore wind, but again, not clean.
For the best of the best, you’re looking at Saturday afternoon the 29th and Sunday morning the 30th of August. Big, clean, and powerful. Not for the faint-hearted, but a true standout for the crew who can handle it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Thu night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Very mild (max 19°C on Sun afternoon, min 13°C on Mon night). Winds increasing (light winds from the WNW on Sun night, fresh winds from the WNW by Mon afternoon). | |||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 17 | SW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 13 |
Wave Graph | ||||||||||||||||||||
4082 | 2275 | 1591 | 822 | 506 | 2175 | 5006 | 6314 | 6719 | 4844 | 3731 | 3955 | 5299 | 5026 | 3784 | 3243 | 2560 | 2880 | 3838 | 5387 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | on |
High Tide | 11:28PM0.59m | 9:30AM0.85m | 11:07PM0.60m | 10:11AM0.79m | 11:06PM0.63m | 10:54AM0.71m | 11:15PM0.67m | 11:39AM0.61m | 11:33PM0.73m | 12:35PM0.51m | 11:57PM0.78m | 00:29AM0.82m | ||||||||
Low Tide | 4:53PM0.34m | 2:29AM0.56m | 5:05PM0.37m | 3:35AM0.51m | 5:13PM0.41m | 4:35AM0.46m | 5:13PM0.46m | 5:41AM0.44m | 4:55PM0.49m | 7:07AM0.42m | 3:46PM0.49m | 10:34AM0.40m | ||||||||
— | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | |
5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | 2 | — |
Temp °C | 15 | 12 | 13 | 16 | 13 | 16 | 19 | 15 | 19 | 19 | 17 | 18 | 18 | 14 | 14 | 14 | 15 | 16 | 16 | 16 |
Feels °C | 8 | 6 | 8 | 11 | 8 | 12 | 16 | 12 | 17 | 17 | 17 | 13 | 12 | 9 | 9 | 9 | 11 | 10 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 17 | SW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | — |
4082 | 2275 | 1591 | 822 | 506 | 2175 | 5006 | 6314 | 6719 | 4844 | 3731 | 3955 | 5299 | 5026 | 3784 | 3243 | 2560 | 2880 | 3838 | — | |
Swell 2 Height (m) Direction Period (s) | — | SW 21 | WSW 20 | SW 20 | SW 18 | SW 19 | — | — | — | — | WSW 20 | — | — | — | — | — | — | — | — | — |
— | 18 | 39 | 60 | 323 | 1185 | — | — | — | — | 441 | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 26 | SW 23 | SW 21 | S 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | 25 | 84 | 365 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 6 | SE 5 | SSE 6 | SE 6 | SE 5 | SSE 5 | — | — | — | — | WNW 5 | WSW 7 | — | — | — | — | — | — | WSW 13 |
256 | 144 | 82 | 110 | 51 | 23 | 21 | — | — | — | — | 82 | 397 | — | — | — | — | — | — | 5387 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1689 | 1 | 1 | 20 | 1 | 0 | 0 | 0 | 3 | 53 | 2 | 359 | 359 | 20 | 38 | 38 | 88 | 359 | 359 | 2 |
Best forecast wave conditions in Margaret River | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Cobblestones Surf forecast
The above surf forecast table for Cobblestones provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cobblestones can be found by selecting the local surf guide option on the grey menu. Our Cobblestones 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 (Cobblestones) 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 Cobblestones 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.
Cobblestones is 85 km (53 miles) from the city of Bunbury. If you plan a holiday in Margaret River, look for hotels and other accommodation in Bunbury. Bunbury has rooms for a wide range of budgets as well as car hire and transport links.











