
Surf Forecasts:
Cobblestones surf forecast from 3 Aug 2026:
- Best quality surf: Saturday 8 Aug, 2AM (local time) - 20ft (6.0m), 14s period, WSW swell with onshore winds.
- Most powerful swell: Saturday 8 Aug, 11AM (local time) - 23ft (7.0m), 15s period, SW swell with 22,220 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 2AM (local time) - 20ft (6.0m), 14s 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 Saturday (Aug 08) at 2AM. The primary swell is predicted to be 6.0m 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 7.0m 15s and forecast to arrive on Saturday (Aug 08) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 6s period and expected on Tuesday (Aug 04) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 8th Aug) | 20ft (6.0m) 14s |
| Best Surf | 2AM (Sat 8th Aug) | 20ft (6.0m) 14s |
| Most Powerful | 11AM (Sat 8th Aug) | 23ft (7.0m) 15s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
G’day, it’s Rusty.
Alright, let’s cut straight to it. The next week and a half is a bit of a mess for us, but there’s one clear standout window that’s worth circling on the calendar. We’ve got a solid SW groundswell pushing in, but for most of the period, the wind is going to be our biggest enemy. There are a few days where it cleans up, and that’s where you want to be.
We’ve got some solid surf coming in, but the majority of the run is going to be too jumbled up to be any good. Over the next few days, from Tuesday the 4th through Thursday the 6th, we’re looking at surf in the 11.5 ft to 16.4 ft range, but the onshore and cross-onshore winds are going to chop it all to bits. The energy is moderate to strong (8079 to 12189), but it’s not going to be rideable. Expect a lot of whitewater and not much else.
The first real glimmer of hope comes on Wednesday morning, the 5th. We’ve got a 16.4 ft SW swell at 16 seconds, and the wind is light and offshore from the WSW. This is a proper window. The water temp is a touch warmer than average at 66.9°, which is nice. This will be the cleanest surf of this early stretch. But it’s only a morning window; by the afternoon, the wind swings NW and gets a bit cross-on, so it’ll sloppify.
Then we go back into the grinder. Thursday and Friday (the 6th and 7th) are pretty much a write-off. Strong winds, rain, and lumpy conditions. The swell stays around 13.1 ft, but with 25-40 km/h winds, it’s a washing machine. Not worth it.
Here’s the big one. Saturday, August 8th is the standout of the entire period. The swell jumps to a massive 23.0 ft from the SW with a period of 15 seconds. The combined energy is pumping at 42307. This is a serious, heavy groundswell. For this break, it’s going to be too big for most. It’s expert-only territory, and I mean real experts. It’s heavy, powerful, and unforgiving. The plus side is the wind and tide are favorable. If you’re charging, this is your window, but it’s not for the faint of heart.
Sunday and Monday (August 9th and 10th) see the swell drop back to the 14.8 ft range, but the wind is back on it, either onshore or fresh cross-onshore. It’s messy and poor. We’re back to the choppy stuff. The energy is still moderate, but it’s not clean enough to be any fun.
Tuesday, August 11th, brings another big pulse of 19.7 ft SW swell at 16-17 seconds (16613 to 20370). Again, the wind is favorable, but just like Saturday, it’s predicted to be too big for the break. This is another expert-only day. The power is immense, and it’s going to be a serious paddle.
Then we slip back into mediocrity for a few days. From Wednesday the 12th to Friday the 14th, we’ve got 9.8 ft to 16.4 ft of SW swell, but the winds are all over the place and it’s mostly cross-on and lumpy. The energy is weak to moderate (4137 to 14856), and the quality is just not there. You’d be wasting your time.
The next possible window is Saturday, August 15th in the afternoon. We’ve got a 18.0 ft WSW swell with a longer 17-second period. The energy is strong at 20676. The wind is cross-shore, which is better than onshore. The call is that wind and tide are favorable, but again, it’s pushing that too-big threshold. It’s a fine line. It could be epic, or it could be a washing machine. More of a look-see day.
The following few days (August 16th to 19th) continue the trend. Big swell, 14.8 ft to 19.7 ft, but mostly onshore or strong cross-onshore winds. There’s a small window on Tuesday the 18th afternoon with a 19.7 ft WSW swell at 16 seconds (18180), but the wind is cross-onshore, which will make it lumpy. Not ideal.
The final day in the period, Wednesday, August 19th in the afternoon, shows some promise. The swell is 14.8 ft from the WSW at 15 seconds, but the wind is a fresh cross-offshore from the N. That’s a clean wind direction. The energy is moderate (9525). This could be a fun one, but it’s 11 days out, so take it with a grain of salt.
So, to sum it up: the main standouts are Saturday, August 8th and Tuesday, August 11th – both are for experts only, with huge, powerful groundswell and favorable winds. The second week is more promising but less certain. Keep an eye on the
Short Range ForecastModerate rain (total 13mm), heaviest on Thu afternoon. Very mild (max 17°C on Wed night, min 14°C on Tue morning). Winds increasing (light winds from the WSW on Wed morning, fresh winds from the WNW by Thu afternoon). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Fri morning. Very mild (max 15°C on Fri morning, min 11°C on Fri night). Winds decreasing (near gales from the SW on Fri night, moderate winds from the SW by Sat night). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 17 | WSW 16 | WSW 16 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | SW 16 | SW 15 | WSW 15 | WSW 14 | SW 15 | SW 16 | SW 17 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
8079 | 6650 | 6251 | 12189 | 11797 | 10140 | 8132 | 8684 | 8484 | 8159 | 7561 | 15047 | 22220 | 20335 | 16733 | 10836 | 10458 | 10783 | 9681 | 10140 | 12880 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross | cross | cross-on | cross-on | on | on | on | cross-on | on | on | cross-on | on | cross-on | on | on | on |
High Tide | 11:27AM0.59m | 2:06AM0.78m | 3:03AM0.84m | 4:24AM0.90m | 5:45AM0.95m | 6:51AM1.00m | 7:46AM1.03m | ||||||||||||||
Low Tide | 9:04AM0.58m | 5:15PM0.53m | 2:30PM0.46m | 2:35PM0.36m | 3:09PM0.28m | 3:46PM0.22m | 4:24PM0.20m | 5:00PM0.20m | |||||||||||||
7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | |
— | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | 1 | 2 | — | 3 | — | 4 | 3 | 3 | — | 6 | — | — | — | — | 2 | 2 | — | — | 1 |
Temp °C | 14 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 13 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 15 |
Feels °C | 8 | 9 | 11 | 13 | 15 | 12 | 11 | 12 | 13 | 11 | 7 | 7 | 3 | 6 | 7 | 10 | 8 | 4 | 8 | 7 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 17 | WSW 16 | WSW 16 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | SW 16 | SW 15 | WSW 15 | — | SW 15 | SW 16 | SW 17 | SW 16 | — | WSW 20 | SW 15 | SW 16 | SW 16 |
8079 | 6650 | 6251 | 12189 | 11797 | 10140 | 8132 | 8684 | 8484 | 8159 | 7561 | — | 22220 | 20335 | 16733 | 10836 | — | 253 | 9681 | 10140 | 12880 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 21 | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 467 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NW 5 | — | — | — | — | — | WSW 14 | SW 15 | — | — | — | SW 15 | SW 15 | — | — | — |
— | — | — | — | — | 47 | — | — | — | — | — | 15047 | 20087 | — | — | — | 10458 | 10783 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 502 | 359 | 201 | 2 | 2 | 86 | 211 | 306 | 2 | 689 | 359 | 1689 | 2170 | 2561 | 35 | 359 | 569 | 89 | 2 | 359 | 512 |
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.











