
Surf Forecasts:
Cobblestones surf forecast from 31 Jul 2026:
- Best quality surf: Thursday 6 Aug, 5PM (local time) - 18ft (5.5m), 16s period, WSW swell with onshore winds.
- Most powerful swell: Thursday 6 Aug, 8PM (local time) - 20ft (6.0m), 15s period, WSW swell with 15,480 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 8PM (local time) - 15ft (4.5m), 15s 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 01) at 8PM. The primary swell is predicted to be 4.5m and 15s period. 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 6.0m 15s and forecast to arrive on Thursday (Aug 06) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Thursday (Aug 06) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 1st Aug) | 15ft (4.5m) 15s |
| Best Surf | 5PM (Thu 6th Aug) | 18ft (5.5m) 16s |
| Most Powerful | 8PM (Thu 6th Aug) | 20ft (6.0m) 15s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Right, folks, Rusty here. Let’s have a look at what’s coming down the pipe.
It’s a slow start, no surf worth talking about until the first of August. The first few days of the run are a bit of a write-off, with a big, raw SW swell (13 ft, 16-second period) bashing the coast on Friday, July 31st, but the wind is a messy cross-onshore, trashing the surface. The combined energy is a hefty 7564, but it’s just not clean. Saturday the 1st looks a little better, but still choppy.
The real turning point comes Sunday, the 2nd of August. The wind drops out and swings offshore from the NNE, cleaning up the 12 ft SW swell (13-second period) on Sunday morning, and by the afternoon, it’s even better. We’re talking a 10 ft SW groundswell with a light offshore breeze. The water is a touch warmer than normal for this time of year, sitting at 67°.
Then Monday the 3rd is the absolute standout. Cobblestones is looking glassy. On Monday morning, we’ve got a 6 ft SW groundswell (15-second period) with glassy conditions – that’s a rare and beautiful thing. The afternoon is equally good, with a 7 ft SW swell (16-second period) and still glassy. This is the best on offer, hands down. The combined energy is moderate at 1582 for the morning, and 2157 for the afternoon. This is a reef break, so that long-period groundswell will wrap in beautifully, offering clean, powerful walls. It’s a spot for the advanced crew, and it’s usually consistent, though crowds are possible.
After that, Tuesday the 4th gets blown out again with strong onshore winds, and the swell gets huge. From Wednesday the 5th through to the 9th of August, the swell is just too big for this spot – we’re looking at 15 ft to 28 ft of SW swell, with combined energy values hitting 44885. The wind is mostly onshore or cross-onshore, so it’s a mess. This is only for experts, but even then, the wind is a problem.
There’s a brief window of clean surf again on Monday the 10th of August, with a 15 ft SW swell (15-second period) and a gentle cross-shore wind. The combined energy is 9354. It’s good, but not as good as that Monday session. The rest of the second week gets messy again, with strong winds and building swell that is again too big for the break, especially on the 14th and 15th of August, where we see 28 ft swells and combined energy over 39584.
Bottom line: Get on it for Monday the 3rd of August. That glassy, long-period groundswell at Cobblestones is the pick of the entire 16-day window. The weekend after that is promising but a lot less certain with the wind.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri afternoon. Very mild (max 18°C on Fri afternoon, min 9°C on Sun morning). Winds decreasing (fresh winds from the WSW on Fri night, calm by Mon morning). | Days 5-7 Weather SummaryHeavy rain (total 20mm), heaviest during Wed night. Very mild (max 17°C on Wed night, min 14°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the NW by Thu morning). | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 16 | SW 15 | SW 14 | SW 15 | SW 14 | SW 13 | SW 13 | SW 14 | SW 15 | SW 16 | SW 15 | SW 17 | SW 16 | WSW 16 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 |
Wave Graph | ||||||||||||||||||||
7359 | 7046 | 6472 | 10760 | 6245 | 3775 | 2923 | 2458 | 1486 | 2157 | 2742 | 7454 | 5678 | 6034 | 10754 | 9639 | 10895 | 10279 | 15002 | 13858 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | off | cross-off | cross-off | off | glassy | glassy | glassy | on | on | on | cross | cross-on | cross-on | cross | on | cross-on |
High Tide | 1:42AM0.62m | 10:35AM0.91m | 1:04AM0.64m | 11:12AM0.81m | 1:08AM0.68m | 11:43AM0.70m | 1:29AM0.72m | 11:27AM0.59m | 2:06AM0.78m | 3:03AM0.84m | 4:24AM0.90m | |||||||||
Low Tide | 6:21PM0.40m | 2:31AM0.62m | 6:33PM0.44m | 4:26AM0.61m | 6:39PM0.48m | 6:05AM0.60m | 6:25PM0.52m | 9:04AM0.58m | 5:15PM0.53m | 2:30PM0.46m | 2:35PM0.36m | |||||||||
— | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | |
5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | |
mm | 6 | 2 | — | — | — | — | — | — | — | — | 1 | 3 | 1 | 3 | — | 1 | 5 | 6 | 8 | 1 |
Temp °C | 18 | 16 | 14 | 13 | 13 | 11 | 13 | 13 | 15 | 16 | 15 | 16 | 15 | 16 | 16 | 16 | 17 | 17 | 16 | 14 |
Feels °C | 12 | 8 | 7 | 8 | 9 | 6 | 9 | 10 | 14 | 15 | 15 | 13 | 8 | 10 | 13 | 12 | 12 | 11 | 9 | 5 |
Swell 1 Height (m) Direction Period (s) | SW 16 | — | SW 14 | SW 15 | SW 14 | SW 13 | SW 13 | SW 14 | SW 15 | SW 16 | SW 15 | SW 17 | SW 16 | WSW 16 | SW 16 | WSW 16 | WSW 16 | WSW 16 | — | — |
7359 | — | 6472 | 10760 | 6245 | 3775 | 2923 | 2458 | 1486 | 2157 | 2742 | 7454 | 5678 | 6034 | 10754 | 9639 | 10895 | 10279 | — | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | WSW 15 | — | SW 17 | SE 13 | S 10 | — | WSW 20 | — | — | — | — | — | — | — | — | — |
— | — | — | — | 897 | — | 886 | 7 | 89 | — | 1294 | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SE 14 | — | SE 13 | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | 8 | — | 7 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 6 | SW 15 | — | — | — | — | — | — | — | — | — | — | WSW 4 | — | — | — | — | NW 7 | WSW 16 | WSW 15 |
205 | 7046 | — | — | — | — | — | — | — | — | — | — | 32 | — | — | — | — | 345 | 15002 | 13858 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 251 | 502 | 20 | 20 | 0 | 16 | 0 | 0 | 0 | 0 | 0 | 201 | 359 | 251 | 201 | 201 | 220 | 630 | 359 | 1689 |
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.











