
Surf Forecasts:
Cobblestones surf forecast from 6 Aug 2026:
- Best quality surf: Saturday 8 Aug, 5AM (local time) - 21ft (6.5m), 14s period, SW swell with onshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 30ft (9.0m), 17s period, SW swell with 48,643 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 5AM (local time) - 21ft (6.5m), 14s 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 08) at 5AM. The primary swell is predicted to be 6.5m and 14s period. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 9.0m 17s 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+) | 5AM (Sat 8th Aug) | 21ft (6.5m) 14s |
| Best Surf | 5AM (Sat 8th Aug) | 21ft (6.5m) 14s |
| Most Powerful | 2AM (Tue 11th Aug) | 30ft (9.0m) 17s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Cobblestones has in store for us.
We’re looking at a pretty wild 16-day window out at Cobblestones. The swell is going to be huge, and I mean *huge*, but the wind is going to be a real battle for most of it. The water is sitting at 68°, which is much warmer than normal – a good 4° above average, so you might not need the thickest rubber.
Right off the bat, Thursday the 6th through to Monday the 11th is a write-off. We’re looking at 13ft to a massive 26ft of swell, but it’s coming with strong onshore and cross-onshore winds, mostly from the west and southwest. The wave energy is off the charts – between 8,707 and a whopping 35,824 (very strong) – but the conditions are just poor. It’s lumpy, messy, and unsurfable. For a few days there, like Saturday the 8th and Monday the 10th, the swell is predicted to be too big for this break anyway.
Tuesday the 12th and Wednesday the 13th the swell drops back a bit, to 13ft to 16ft, but the wind is still onshore or cross-onshore. It’s looking marginal at best, with questionable tide conditions. The energy is still high but the quality isn’t there.
Now, Thursday the 14th is the one. After all that chaos, we get a moment of glory. The wind swings around to a light cross-offshore from the NNE, at just 6 mph. The swell is a solid 15ft from the SW with a long 16-second period (groundswell) and combined energy of 9,402 (strong). The comment says it all: exceptional surf conditions for expert surfers. This is a genuine standout – clean waves for those who can handle it. Just remember, at this size it’s a paddling mission and strictly for the experienced crew.
After that, it gets tricky again. Friday the 15th the swell drops to 10ft to 12ft, but the wind is howling at 22 mph, so it’s just a clean but blown-out mess. Then from the 16th through the 19th, we’re back to strong winds and poor conditions, with another spike of 20ft swell on Wednesday the 19th that is just too big.
But then, hold onto your board. Thursday the 20th rolls around and we get another beauty. Morning brings some cross-shore wind, but the afternoon turns glassy. Perfect. The swell is 15ft from the WSW, with a 15-second period and combined energy of 9,472. The record says exceptional surf conditions for expert surfers. This is the other stand out in the second week – a little less powerful than the 14th, but with that glassy surface, it could be the pick of the whole run.
Friday the 21st looks smaller and cleaner again, but the wind picks up, so it’s just a marginal finish to the outlook.
So, to sum it up: a lot of heavy, wind-affected surf, but two very special windows for the experts on Thursday the 14th and Thursday the 20th. Mark your calendars.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu afternoon. Very mild (max 18°C on Thu morning, min 11°C on Fri night). Winds increasing (moderate winds from the WSW on Thu night, near gales from the WSW by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Mon night. Very mild (max 16°C on Sun afternoon, min 9°C on Mon night). Winds increasing (moderate winds from the SW on Sun morning, near gales from the SW by Mon night). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 16 | WSW 16 | SW 15 | SW 15 | WSW 15 | SW 14 | SW 15 | SW 17 | SW 17 | SW 16 | SW 15 | SW 14 | SW 12 | SW 13 | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
8498 | 9060 | 9510 | 7824 | 7544 | 14646 | 22023 | 27086 | 24083 | 13596 | 9997 | 5130 | 10065 | 17019 | 48643 | 35824 | 21710 | 13971 | 10879 | 10144 | 8021 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | on | on | on | cross-on |
High Tide | 4:24AM0.90m | 5:45AM0.95m | 6:51AM1.00m | 7:46AM1.03m | 8:35AM1.02m | 9:17AM0.98m | |||||||||||||||
Low Tide | 2:35PM0.36m | 3:09PM0.28m | 3:46PM0.22m | 4:24PM0.20m | 5:00PM0.20m | 5:34PM0.24m | 6:03PM0.29m | ||||||||||||||
7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | |
— | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | |
mm | 1 | 5 | 2 | — | — | 7 | 4 | 2 | — | 1 | 1 | 2 | 4 | 3 | 9 | — | — | — | — | — | — |
Temp °C | 18 | 17 | 16 | 14 | 14 | 14 | 11 | 12 | 14 | 15 | 16 | 16 | 14 | 12 | 10 | 12 | 14 | 15 | 15 | 15 | 15 |
Feels °C | 12 | 10 | 11 | 7 | 6 | 4 | -1 | 2 | 9 | 10 | 10 | 8 | 4 | 1 | -3 | 4 | 7 | 8 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | SW 15 | SW 15 | WSW 15 | — | — | — | SW 17 | SW 16 | SW 15 | SW 14 | — | — | — | SW 17 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 |
8498 | 9060 | 9510 | 7824 | 7544 | — | — | — | 24083 | 13596 | 9997 | 5130 | — | — | — | 35824 | 21710 | 13971 | 10879 | 10144 | 8021 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 21 | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | 548 | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WNW 6 | — | — | — | — | SW 14 | SW 15 | SW 17 | — | — | — | W 7 | SW 12 | SW 13 | SW 17 | — | — | — | — | — | — |
209 | — | — | — | — | 14646 | 22023 | 27086 | — | — | — | 542 | 10065 | 17019 | 48643 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 220 | 251 | 2 | 359 | 359 | 2004 | 2004 | 2004 | 159 | 179 | 359 | 251 | 1106 | 2014 | 2165 | 2633 | 2633 | 2 | 2 | 38 | 2 |
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.











