Surf Forecasts:
Cobblestones surf forecast from 26 Aug 2026:
- Best quality surf: Sunday 30 Aug, 2AM (local time) - 10ft (3.0m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 5PM (local time) - 16ft (5.0m), 17s period, WSW swell with 14,299 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 2PM (local time) - 8ft (2.5m), 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 2PM. The primary swell is predicted to be 2.5m and 17s period with a secondary swell of 0.6m and 6s. The wind is predicted to be offshore 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 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 27) at 5PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 29th Aug) | 8ft (2.5m) 17s |
| Best Surf | 2AM (Sun 30th Aug) | 10ft (3.0m) 19s |
| Most Powerful | 5PM (Wed 26th Aug) | 16ft (5.0m) 17s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s cookin’ at Cobblestones.
We’ve got a solid run of swell on the way, but it’s gonna be a bit of a mixed bag with the wind. The water is sitting at 66°, which is a touch warmer than normal for this time of year – not a bad thing, just something to note. The real story here is the size, and it’s going to get big, like proper big, so know your limits.
The first solid window kicks off Wednesday morning, August 26th. It’s big right out of the gate with a 16ft swell from the WSW, but the wind is cross-on from the SSW at 12 mph, making it choppy and poor. Not the one. The afternoon cleans up a little, still 16ft but the wind goes cross, and the energy is massive (14,299). It’s still a bit of a battle, but the potential is there for a hollow wave if you’re an expert.
Thursday, August 27th, the swell drops a touch, but we’re still dealing with a fresh 19 mph cross-breeze. The morning has 13ft, the afternoon 12ft, but it’s lumpy and cross-chop. Not great.
Friday, August 28th, the morning is the first real glimpse of clean conditions. The swell drops to 7ft from the SW with a 12-second period, and a cross-offshore breeze from the SE at 16 mph. The energy is moderate (1,328). It’s a lot smaller, but the surface is clean. The afternoon gets messy again.
The standout of the first week has to be Saturday, August 29th afternoon. The wind swings offshore from the E at 9 mph, with a 10ft SW swell at a long 17 seconds. The energy is strong (5,283), and the conditions are described as "exceptional for expert surfers." This is a proper groundswell with a long period, so it’s gonna reel down the point with plenty of power. This is the one to circle on the calendar for anyone who can handle it. Sunday morning, August 30th, is also a very good runner-up, with a 10ft SW swell, clean conditions, and a similar energy (6,179).
After that, the wind turns onshore again, and the surf gets messy through Monday and Tuesday, with the swell still hanging around 8ft to 12ft but choppy. Wednesday, September 2nd, is a write-off with strong onshore winds.
The middle of the week, September 3rd and 4th, gets interesting but dangerous. The swell jumps again – Thursday, September 3rd, has a 10ft to 12ft SW swell, but it’s howling onshore. Friday, September 4th morning, the swell is a massive 15ft from the SW, and the wind is light cross-on. The energy is enormous (15,030), but the forecast literally says it’s "too big for this break." This is expert-only territory, if even that.
The weekend of September 6th and 7th sees a drop in wind, but the swell is still pumping. Monday, September 7th morning is a real sleeper – 13ft SW swell with a very long 17-second period, and the wind is practically glassy from the S at 3 mph. The energy is massive (8,744). This could be a dream session with that perfect offshore texture, but it’s a long way out, so keep an eye on it.
The final call is Tuesday, September 8th morning. Another 15ft swell from the WSW, cross-offshore wind from the N at 12 mph, and clean conditions. The energy is huge (9,281). This is another potential standout for the second week, but with that much energy and a 16-second period, it’s for the experienced crew only.
The last few days, September 9th and 10th, are messy again with onshore winds and a 20ft monster on the Wednesday that’s too big, followed by a 13ft day on Thursday with a light cross-breeze that could be okay.
Overall, the best bet is Saturday afternoon, August 29th, and keep a close watch on Monday morning, September 7th. It’s a big swell window, so be smart out there.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 17°C on Fri afternoon, min 10°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Warm (max 20°C on Sat afternoon, min 12°C on Sat morning). Winds increasing (light winds from the E on Sat afternoon, fresh winds from the SSE by Mon night). | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | WSW 18 | WSW 17 | WSW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 19 | SW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
14437 | 14299 | 10256 | 7031 | 4370 | 2176 | 1264 | 822 | 506 | 2325 | 5283 | 7034 | 6179 | 4678 | 3460 | 4002 | 5087 | 3968 | 3241 | 2626 | 2368 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-off | cross | cross | on |
High Tide | 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 | 11:39AM0.61m | 11:33PM0.73m | 12:35PM0.51m | 11:57PM0.78m | ||||||||
Low Tide | 4:41PM0.32m | 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 | |||||||||
6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | |
— | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | |
mm | 1 | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | — |
Temp °C | 15 | 13 | 14 | 14 | 15 | 14 | 14 | 17 | 12 | 16 | 20 | 16 | 17 | 18 | 17 | 17 | 17 | 13 | 14 | 15 | 13 |
Feels °C | 11 | 9 | 10 | 8 | 8 | 8 | 8 | 11 | 6 | 13 | 19 | 14 | 15 | 16 | 16 | 14 | 14 | 8 | 9 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 18 | WSW 17 | WSW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 19 | SW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 14 | SW 14 |
14437 | 14299 | 10256 | 7031 | 4370 | 2176 | 1264 | 822 | 506 | 2325 | 5283 | 7034 | 6179 | 4678 | 3460 | 4002 | 5087 | 3968 | 3241 | 2626 | 2368 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 21 | WSW 20 | SW 20 | SW 18 | SW 19 | — | SE 6 | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 18 | 39 | 99 | 323 | 1185 | — | 30 | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 26 | WSW 24 | SW 21 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | 25 | 55 | 365 | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 6 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SE 5 | — | — | — | — | WNW 4 | WNW 5 | — | — | — | — | — |
— | — | — | — | 135 | 239 | 145 | 184 | 59 | 57 | — | — | — | — | 22 | 84 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 89 | 1 | 1340 | 89 | 1 | 1689 | 27 | 1 | 0 | 0 | 0 | 0 | 201 | 64 | 2 | 35 | 1 | 20 | 20 | 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.











