Surf Forecasts:
Cobblestones surf forecast from 27 Aug 2026:
- Best quality surf: Sunday 30 Aug, 8AM (local time) - 11ft (3.5m), 18s period, SW swell with offshore winds.
- Most powerful swell: Thursday 3 Sep, 2AM (local time) - 13ft (4.0m), 16s period, SW swell with 7,471 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 2PM (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 2PM. The primary swell is predicted to be 3.0m and 17s period with a secondary swell of 0.2m and 9s. 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 4.0m 16s and forecast to arrive on Thursday (Sep 03) at 2AM. Winds are predicted to be onshore 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 8PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 29th Aug) | 10ft (3.0m) 17s |
| Best Surf | 8AM (Sun 30th Aug) | 11ft (3.5m) 18s |
| Most Powerful | 2AM (Thu 3rd Sep) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a wild 16-day window ahead, with some serious size coming through, but the wind is going to be the real story. The early part of the week is a write-off with onshore junk, but if you’re an expert and you can wait, there’s a golden window of clean, powerful surf.
First up, the standout. Cobblestones is a solid reef break, and it’s our only game in town. The water is sitting at 66°, which is a touch warmer than normal for this time of year, so you might get away with a thinner suit.
The first couple of days are rough. Thursday (27th August) is a mess. We’ve got a 13 ft SW swell with a 15-second period, but the wind is a fresh cross-shore from the SSE at 19 mph, making it lumpy and choppy. The wave energy is massive (6550), but it’s a write-off for paddle surfing. It’s a big, powerful, ugly lump. Thursday afternoon drops to 10 ft but the wind picks up to 22 mph, making it even worse.
Friday (28th) is still marginal. The swell drops to 8 ft from the SW, and we get a bit of a cross-offshore breeze from the SE at 12 mph in the morning, which cleans it up a little. Still, the energy is moderate (1757), and the period is 12 seconds, so it’s mushy. Not worth getting excited about.
Saturday (29th) is where it starts to get interesting. The morning sees a 7 ft SW swell with a 16-second period, a light cross-offshore wind, and the energy is building (3512). It’s clean. But the real magic is Saturday afternoon. The wind swings NE at 9 mph, going fully offshore, and the swell pumps up to 10 ft from the SW with a 17-second period. The energy is strong (5499) and the conditions are clean. This is exceptional for experts, but at 10 ft and a long period, this is a big, powerful wave. It’s going to be perfect for the reef, but it’s NOT for beginners. The long period means it’ll peel nicely at Cobblestones.
Sunday (30th) morning is the absolute peak. We’ve got an 12 ft SW swell, a 17-second period, and a light offshore breeze from the NE at 6 mph. The energy is huge (6797), and it’s clean. This is the best on offer. If you can only paddle out once, this is it. Sunday afternoon the wind goes cross-shore, and the swell drops slightly, but it’s still a solid 10 ft.
Then the wheels fall off. From Monday (31st August) through to Friday (4th September), the wind goes onshore or cross-onshore, with speeds from 16 to 19 mph. The swell is still massive – 13 ft to 15 ft from the SW – but with that wind, it’s just a washing machine. The energy is through the roof (over 7000 at times), but it’s pure whitewater. The setup looks more interesting for kite surfing than paddle surfing.
The second week is a mixed bag. Saturday (5th September) and Sunday (6th) see the swell drop to 7 ft to 10 ft, but the wind is still cross or cross-on, keeping it choppy. Not great.
Then, on Monday (7th September), we get another window. The morning is magic: a 13 ft SW swell with a 15-second period, and the wind is light offshore from the ENE at 6 mph. The energy is massive (5984), and it’s clean. This is another expert-only session, but it’s a beauty. The afternoon goes cross-on, so get in early.
The rest of the second week is a slow fade. Tuesday (8th) and Wednesday (9th) are onshore or cross-onshore, with the swell dropping to 6 ft to 8 ft. The wind gets strong on Thursday (10th), with a 28 mph cross-on or onshore breeze, making it unsurfable. The last few days (Friday 11th) are back to big, onshore slop.
So, the call is simple. The Saturday (29th August) afternoon and Sunday (30th August) morning are the clear standouts: clean, offshore winds, big SW groundswell, and a long period. If you’re an expert, you’re in for a treat. The Monday (7th September) morning is another promising window, but it’s further out, so keep your fingers crossed. For everyone else, there’s a lot of waiting around for the wind to behave.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Thu night). Winds decreasing (fresh winds from the SSE on Thu afternoon, light winds from the ESE by Sat afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 20°C on Sun afternoon, min 13°C on Sun morning). Winds increasing (calm on Sun night, fresh winds from the W by Mon afternoon). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 15 | SW 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 | SW 16 | SW 14 | SW 14 | SW 11 | SW 14 | SW 13 | SW 16 |
Wave Graph | |||||||||||||||||||||
6601 | 5429 | 2873 | 1591 | 822 | 506 | 2054 | 5223 | 6702 | 6719 | 4844 | 3921 | 3955 | 5438 | 5534 | 4375 | 3558 | 1109 | 4232 | 4464 | 7471 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | off | cross-off | cross-off | cross | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | on |
High Tide | 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 | 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 | |||||||||
6:45 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 2 |
Temp °C | 15 | 15 | 12 | 14 | 16 | 13 | 15 | 19 | 16 | 18 | 20 | 17 | 17 | 17 | 14 | 14 | 14 | 14 | 16 | 16 | 16 |
Feels °C | 9 | 8 | 6 | 10 | 11 | 8 | 12 | 17 | 13 | 16 | 18 | 17 | 14 | 11 | 9 | 10 | 9 | 10 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 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 | SW 16 | SW 14 | SW 14 | SW 11 | SW 14 | SW 13 | SW 16 |
6601 | 5429 | 2873 | 1591 | 822 | 506 | 2054 | 5223 | 6702 | 6719 | 4844 | 3921 | 3955 | 5438 | 5534 | 4375 | 3558 | 1109 | 4232 | 4464 | 7471 | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 21 | WSW 20 | SW 20 | SW 18 | SW 19 | — | — | — | — | WSW 20 | — | — | — | — | SW 11 | SW 14 | — | — | — |
— | — | 18 | 39 | 60 | 323 | 1185 | — | — | — | — | 441 | — | — | — | — | 1087 | 1049 | — | — | — | |
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 | SSE 5 | SSE 5 | SE 6 | SE 5 | — | — | — | — | — | W 5 | — | — | — | — | WSW 10 | — | — | — |
— | 319 | 179 | 72 | 106 | 49 | 12 | — | — | — | — | — | 87 | — | — | — | — | 666 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1346 | 88 | 1 | 1 | 35 | 1 | 0 | 0 | 0 | 0 | 38 | 2 | 306 | 359 | 20 | 2 | 2 | 2 | 359 | 359 | 359 |
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.











