Surf Forecasts:
Cobblestones surf forecast from 27 Aug 2026:
- Best quality surf: Sunday 30 Aug, 5AM (local time) - 11ft (3.5m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 30 Aug, 5AM (local time) - 11ft (3.5m), 18s period, SW swell with 7,252 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 0.1m 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 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 2AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 29th Aug) | 10ft (3.0m) 17s |
| Best Surf | 5AM (Sun 30th Aug) | 11ft (3.5m) 18s |
| 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, let’s break it down. The first worthwhile swell hits Friday morning the 28th at Cobblestones.
Friday morning the 28th, a 2.3m SW swell with about a 12-second period, clean with a SE cross-off breeze at 20 km/h. It’s a reef break, advanced only. Water temp is about normal for the season. The combined energy is moderate (1630). Not a classic, but there’s a few corners if the tide plays nice.
Saturday the 29th is the big step up. Morning delivers 2.2m SW at 16 seconds (groundswell), clean with ESE cross-off. That period makes it better. The afternoon is the highlight: 3.0m SW, 17 seconds, and full offshore wind from the east at 20 km/h – clean, lined, and powerful. Combined energy is strong at 5223. For experts only, this is the session of the week.
Sunday the 30th morning keeps pumping with 3.5m SW at 17 seconds, light NE cross-off, combined energy 6797. Still clean, still big. Afternoon wind shifts to NW cross, still 3.0m.
Monday the 31st gets dirty with onshore wind and 2.5m swell. The next few days (Tuesday through Friday the 4th) are mostly onshore, lumpy, and bigger again, peaking at 4.5m SW on Thursday the 3rd. Not worth paddling.
The next real clean window is Sunday the 6th of September – glassy morning, 2.2m WSW at 13 seconds, combined energy 2044. That glass is gold. Monday the 7th is also clean and smaller, with 1.3m to 1.6m SW and cross-off winds. Fun, mellow.
Then Tuesday the 8th afternoon brings 4.0m WSW at 15 seconds, combined energy 9460 – heavy swell with cross-shore wind. For the brave.
Wednesday the 9th was just plain insane: 7.5m WSW swell, combined energy 26006 – far too big, dangerous. Don’t even think about it. Thursday the 10th stays huge and messy.
From Friday the 11th onward it’s a four to five day stretch of poor, onshore conditions, with only a brief cleaner moment on the afternoon of the 4th of September showing cross-off winds but marginal surf.
The true standout sessions are Saturday the 29th afternoon and Sunday the 30th morning. That’s where the swell size, direction, period, and wind all line up for Cobblestones. Big, clean, expert-only.
For smaller cleaner fun, aim for the glassy Sunday the 6th and Monday the 7th.
— 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 18°C on Mon morning, min 13°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the W by Mon afternoon). | ||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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 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 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 2733 | 1591 | 822 | 506 | 2325 | 5223 | 6625 | 6797 | 4844 | 3871 | 3955 | 3192 | 5186 | 3451 | 2883 | 2448 | 3761 | 4649 | 6488 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | off | cross-off | cross-off | cross | on | cross-on | cross-on | cross-on | on | on | 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 | 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 | 1 |
Temp °C | 12 | 13 | 16 | 13 | 16 | 19 | 15 | 18 | 18 | 17 | 18 | 18 | 14 | 14 | 14 | 15 | 16 | 16 | 16 |
Feels °C | 6 | 8 | 10 | 8 | 12 | 16 | 12 | 17 | 16 | 17 | 13 | 13 | 10 | 9 | 9 | 9 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | 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 14 | SW 14 | — |
| kJ | 2733 | 1591 | 822 | 506 | 2325 | 5223 | 6625 | 6797 | 4844 | 3871 | 3955 | 3192 | 5186 | 3451 | 2883 | 2448 | 3761 | 4649 | — |
Swell 2 Height (m) Direction Period (s) | SW 21 | WSW 20 | SW 20 | SW 18 | SW 19 | — | — | — | — | WSW 20 | — | — | — | — | — | — | — | — | — |
| kJ | 18 | 39 | 60 | 323 | 1185 | — | — | — | — | 441 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | SW 23 | SW 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 84 | 365 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 6 | SE 5 | SSE 6 | SE 6 | SE 5 | SE 5 | — | — | — | — | WNW 4 | W 6 | — | — | — | — | — | — | SW 14 |
| kJ | 136 | 76 | 110 | 49 | 66 | 25 | — | — | — | — | 29 | 279 | — | — | — | — | — | — | 6488 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 25 | 1 | 0 | 0 | 0 | 0 | 38 | 2 | 359 | 359 | 2 | 2 | 38 | 251 | 359 | 359 | 89 |
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.
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