Surf Forecasts:
Cobblestones surf forecast from 24 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 11AM (local time) - 16ft (5.0m), 18s period, WSW swell with cross-onshore winds.
- Most powerful swell: Wednesday 26 Aug, 2PM (local time) - 16ft (5.0m), 17s period, WSW swell with 15,981 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 11AM (local time) - 16ft (5.0m), 18s period with WSW 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 Wednesday (Aug 26) at 11AM. The primary swell is predicted to be 5.0m and 18s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 5.0m 17s and forecast to arrive on Wednesday (Aug 26) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Tuesday (Aug 25) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 26th Aug) | 16ft (5.0m) 18s |
| Best Surf | 11AM (Wed 26th Aug) | 16ft (5.0m) 18s |
| Most Powerful | 2PM (Wed 26th Aug) | 16ft (5.0m) 17s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, cobber, Rusty here. Let’s have a look at the bones of this forecast for the next couple of weeks.
The first week is a bit of a write-off, to be honest. We’ve got swell, but the wind gods are against us for most of it. There’s a big, clean window that pops up later, but you’ll need to be patient and pick your moments. This is a reef break, so when it’s on, it’s proper, but it’s not going to be a long, clean run of days.
Monday the 24th kicks off with some waist-to-shoulder high swell from the southwest, with a 13-second period. There’s a bit of energy in the water (3045). But the northwesterly breeze is messing it up – it's cross-shore and making things choppy. The morning is marginal, the afternoon is a full-on choppy mess. Not worth paddling out.
Tuesday the 25th is a washout. The wind is howling from the northwest at 25 mph in the morning, and it's not much better in the afternoon. The swell is up a touch, but it’s lumpy and cross-chopped. Forget it.
Wednesday the 26th is a big red flag. We’ve got a massive pulse of swell coming in – 16.4ft! The energy reading is through the roof (15512). The wind is cross-onshore from the south. This is a case of way, way too much water for this break. Even if the tide was perfect, this is a beast only for the crazies, and honestly, it’s not even that. It’s just too big and messy. This is a day to sit on the headland and watch the ocean flex its muscles. A 16.4ft swell with a 17-18 second period is a lot of moving water.
Thursday the 27th is still blown out, with the swell dropping from 13.1ft to 11.5ft. The south wind is still ruining any chance of clean surf. The energy is still strong (6580 in the morning), but it’s all for nothing with that onshore breeze.
Friday the 28th sees the swell ease a bit, down to the 6.9ft-7.5ft range. The wind is lighter, but it’s still cross-shore, leaving a bit of a chop on the face. The period is down to 12 seconds, so it’s losing its punch. Both sessions are marginal at best. We're just waiting for the bad weather to clear out.
Then we get the standout.
Saturday the 29th is the one to circle on the calendar. The morning is looking *crisp*. The wind goes light and offshore from the east-northeast, grooming the swell. We’ve got a solid 7.5ft of southwest groundswell with a long 16-second period rolling in. The energy is decent (3660). The water is a touch warmer than normal for this time of year. This is the day. The conditions are going to be clean, the reef will be working, and the lines will be proper. This is the standout of the whole run. The afternoon stays clean-ish with a light cross-onshore, and the swell bumps up to 9.8ft, so the morning will be the pick for the best shape and size.
Sunday the 30th is still fun. The swell is a bit bigger, 9.8ft to 11.5ft, with a long 17-second period. The wind is cross-offshore from the north, which will keep the face fairly clean. It’s a step down from Saturday but still worth a session. The energy is still strong (6205), but the wind isn't quite as perfect as the day before.
Monday the 31st – the swell is easing to a still-chunky 8.2ft, with that long period hanging in there. The wind is cross-offshore again, so the surf should be decent, but it’s not as clean as Saturday. This marks the end of the good run, as the wind starts to get fresh again.
And then it goes pear-shaped again.
Tuesday the 1st of September kicks off with a strong nor-northwest wind at 22-25 mph, blowing the surf out. There’s a risk of thunderstorms in the afternoon too. It’s a mess.
Wednesday the 2nd – we've got a new pulse of big swell, back up to 16.4ft, but it's coming with onshore winds. The period has dropped to 11-12 seconds, so it’s a shorter-period, wind-driven mess. The wind is howling and it’s all over the place. This is no good for the reef; it would be a washing machine. You’d be better off with a kiteboard.
From Thursday the 3rd all the way through to the 8th, the outlook is
Short Range ForecastModerate rain (total 19mm), heaviest on Wed afternoon. Very mild (max 17°C on Tue morning, min 13°C on Wed afternoon). Winds increasing (light winds from the W on Mon morning, strong winds from the NW by Tue morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Fri afternoon, min 10°C on Fri night). Winds decreasing (fresh winds from the S on Thu morning, light winds from the ENE by Sat morning). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 13 | SW 13 | WSW 12 | WSW 14 | WSW 13 | WSW 14 | WSW 18 | WSW 17 | WSW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 19 | WSW 17 | WSW 16 | WSW 15 |
Wave Graph | |||||||||||||||||||||
3045 | 2490 | 2206 | 3052 | 3264 | 5978 | 15512 | 15668 | 10265 | 6580 | 4912 | 2914 | 1576 | 1149 | 640 | 2687 | 6015 | 10014 | 6205 | 4678 | 3241 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross | cross-off | off | cross-on | off | cross-off | cross | cross-off |
High Tide | 7:24AM0.91m | 8:07AM0.91m | 8:49AM0.90m | 11:28PM0.59m | 9:30AM0.85m | 11:07PM0.60m | 10:11AM0.79m | 11:06PM0.63m | 10:54AM0.71m | 11:15PM0.67m | |||||||||||
Low Tide | 4:17PM0.29m | 4:29PM0.31m | 4:41PM0.32m | 4:53PM0.34m | 2:29AM0.56m | 5:05PM0.37m | 3:35AM0.51m | 5:13PM0.41m | 4:35AM0.46m | 5:13PM0.46m | |||||||||||
6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | |
— | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | |
mm | — | — | — | 1 | 3 | 4 | 3 | 5 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 17 | 17 | 17 | 14 | 13 | 14 | 13 | 14 | 14 | 14 | 16 | 12 | 13 | 14 | 14 | 15 | 16 | 16 |
Feels °C | 11 | 10 | 10 | 10 | 10 | 12 | 11 | 9 | 7 | 6 | 7 | 10 | 10 | 12 | 7 | 11 | 12 | 12 | 11 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | WSW 12 | WSW 14 | WSW 13 | WSW 14 | WSW 18 | WSW 17 | WSW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 19 | WSW 17 | WSW 16 | WSW 15 |
3045 | 2490 | 2206 | 3052 | 3264 | 5978 | 15512 | 15668 | 10265 | 6580 | 4912 | 2914 | 1576 | 1149 | 640 | 2687 | 6015 | 10014 | 6205 | 4678 | 3241 | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 15 | — | S 12 | NNW 6 | — | — | — | — | — | SW 21 | SW 20 | SW 20 | SW 18 | SW 19 | SW 24 | — | — | — | WSW 20 |
— | — | 565 | — | 3 | 64 | — | — | — | — | — | 18 | 16 | 60 | 258 | 959 | 801 | — | — | — | 342 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 24 | WSW 22 | — | — | — | — | — | — | SW 26 | WSW 23 | WSW 22 | W 26 | — | — | — | — | — |
— | — | — | — | 11 | 363 | — | — | — | — | — | — | 26 | 53 | 308 | 14 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | NW 5 | NW 6 | NW 7 | WNW 7 | — | — | — | — | — | — | — | — | E 3 | — | — | — | N 5 | N 6 | NNW 6 |
— | — | 63 | 154 | 341 | 131 | — | — | — | — | — | — | — | — | 1 | — | — | — | 85 | 141 | 115 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 53 | 53 | 53 | 220 | 251 | 201 | 20 | 630 | 89 | 89 | 89 | 1 | 1 | 31 | 0 | 0 | 2 | 0 | 201 | 53 | 0 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.











