
Surf Forecasts:
Cobblestones surf forecast from 7 Aug 2026:
- Best quality surf: Friday 7 Aug, 8PM (local time) - 15ft (4.5m), 15s period, WSW swell with cross-onshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 26ft (8.0m), 16s period, SW swell with 34,358 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 8PM (local time) - 15ft (4.5m), 15s 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 Friday (Aug 07) at 8PM. The primary swell is predicted to be 4.5m and 15s period with a secondary swell of 4.0m and 15s. 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 8.0m 16s and forecast to arrive on Tuesday (Aug 11) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 7th Aug) | 15ft (4.5m) 15s |
| Best Surf | 8PM (Fri 7th Aug) | 15ft (4.5m) 15s |
| Most Powerful | 2AM (Tue 11th Aug) | 26ft (8.0m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, mates, Rusty here. Let’s cut through the noise for the next couple of weeks at Cobblestones. We’ve got a lot of ocean energy out there, but it’s going to be a fight with the wind and the size for most of it.
To start, Friday the 7th is a complete no-go. There’s a solid SW groundswell with plenty of go, but that 30 km/h cross-on wind has it all chopped up and ugly. Don't even bother.
Saturday the 8th is a different kind of wild. The swell is pushing a massive 23ft, and the energy is way up there. With the wind howling at 31 mph from the SW, it’s just too big and blown out for this reef. This one’s for the kite surfers, not for us.
Sunday the 9th drops a bit to around 16ft, but the wind goes onshore from the WSW. The call is simple: poor. We'll sit this one out.
Monday the 10th and Tuesday the 11th are huge again. Monday has 20-21ft faces with gale-force winds. Tuesday is a monster, hitting 23ft with insane energy. That is a massive amount of power, and again, it’s just too much for this break. Experts only, and even then, it’ll be a mission.
So, there’s a real lull in rideable surf until we get into the second week. The swell starts to back down, and the winds ease up a bit.
Wednesday the 12th and Thursday the 13th see the size drop to the 13-16ft range. It’s still big, but the wind is lighter, though still onshore. Thursday afternoon is the first real window. We’ve got a 15ft SW swell with a long 17-second period, and the wind is only 9 mph. It’s onshore, but it’s soft. The call is “marginal,” but that long-period energy should make for some nice lines on the reef. The water is running much warmer than normal for this time of year, at 68°, which is a bonus.
Friday the 14th looks promising. A light cross-offshore breeze from the NNE kicks in for the afternoon. The swell is a bit smaller at 11ft, but the period is still a solid 15 seconds, and the conditions finally look clean. This is a definite window before the wind swings around again.
The weekend, the 15th and 16th, is a bit of a mixed bag. The morning of the 15th has some cross-shore chop, but the afternoon cleans up with a light NW breeze. Swell is around 15ft. Sunday the 16th starts off okay, but the afternoon gets messy as the wind shifts cross-on and the waves get lumpy at 16ft. A lot of waiting for a couple of average sessions.
Looking into the long-range, Monday the 17th is the one to circle on the calendar. The wind is forecast to be a clean cross-offshore from the N at 19 mph. We’ve got a 16ft WSW swell with a 16-second period and good energy. It's promising, but we're a week out, so keep your fingers crossed.
After that, things get stormy again for the 18th and 19th with strong winds and rain. The swell stays around 16ft, but the wind is on and cross, making it poor. The 20th and 21st see the swell fade to around 10ft, but the onshore winds stick around, so it’s not great.
The final day, Saturday the 22nd, looks like a calm end to a wild run. We’ve got a 10ft SW groundswell with a long 16-second period in the afternoon. The wind is only 6 mph. It’s still cross-on, but so light it might be glassy. It could be a fun, mellow way to finish the fortnight.
If you’re looking for the best waves, set your sights on Thursday the 13th afternoon, Friday the 14th afternoon, and definitely keep the 17th in mind for a proper session. It’s not a classic run, but there are waves if you pick your moments.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Fri night. Very mild (max 16°C on Sun afternoon, min 10°C on Fri night). Winds decreasing (near gales from the SW on Sat morning, moderate winds from the WSW by Sun afternoon). | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Mon morning. Very mild (max 16°C on Wed morning, min 9°C on Mon afternoon). Winds decreasing (near gales from the SW on Mon morning, light winds from the WSW by Wed morning). | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 | WSW 15 | SW 13 | SW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 14 | SW 11 | SW 13 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 15 | SW 17 | SW 17 |
Wave Graph | |||||||||||||||||||||
7932 | 7394 | 14390 | 20133 | 25214 | 20269 | 12155 | 8786 | 6402 | 8992 | 14610 | 34358 | 27252 | 20594 | 13423 | 9697 | 8233 | 6408 | 7063 | 11404 | 11910 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | cross-on | on | on | on | on | on | on | on | cross |
High Tide | 5:45AM0.95m | 6:51AM1.00m | 7:46AM1.03m | 8:35AM1.02m | 9:17AM0.98m | 9:55AM0.92m | |||||||||||||||
Low Tide | 3:09PM0.28m | 3:46PM0.22m | 4:24PM0.20m | 5:00PM0.20m | 5:34PM0.24m | 6:03PM0.29m | 6:23PM0.35m | ||||||||||||||
7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — | |
— | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | — | 8 | 4 | 2 | — | 1 | 1 | 7 | 7 | 4 | 5 | — | — | 2 | — | — | — | — | — | — |
Temp °C | 14 | 15 | 14 | 11 | 11 | 14 | 15 | 16 | 16 | 13 | 9 | 11 | 14 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 |
Feels °C | 7 | 6 | 5 | -1 | 1 | 8 | 9 | 11 | 10 | 2 | -3 | 0 | 5 | 7 | 9 | 12 | 11 | 12 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 15 | WSW 15 | — | — | — | SW 16 | SW 16 | SW 16 | SW 14 | — | — | — | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 15 | SW 17 | SW 17 |
7932 | 7394 | — | — | — | 20269 | 12155 | 8786 | 6402 | — | — | — | 27252 | 20594 | 13423 | 9697 | 8233 | 6408 | 7063 | 11404 | 11910 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 21 | — | — | — | — | — | — | — | — | — | — | SW 20 | SW 18 | — | — |
— | — | — | — | — | — | 548 | — | — | — | — | — | — | — | — | — | — | 464 | 822 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SW 13 | SW 15 | SW 16 | — | — | — | WNW 6 | SW 11 | SW 13 | SW 16 | SW 17 | SW 16 | — | — | — | — | — | — | — |
— | — | 14390 | 20133 | 25214 | — | — | — | 300 | 8992 | 14610 | 34358 | 26903 | 19961 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 201 | 359 | 1823 | 1900 | 1797 | 2004 | 89 | 359 | 251 | 1106 | 2014 | 2167 | 688 | 2644 | 89 | 38 | 359 | 89 | 89 | 2 | 35 |
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.











