Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
19.6° C
2.1° 

Cobblestones surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Cobblestones surf forecast from 11 Aug 2026:

  • Best quality surf: Tuesday 11 Aug, 11AM (local time) - 20ft (6.0m), 16s period, SW swell with cross-onshore winds.
  • Most powerful swell: Tuesday 11 Aug, 11AM (local time) - 20ft (6.0m), 16s period, SW swell with 17,353 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 11 Aug, 11AM (local time) - 20ft (6.0m), 16s 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 Tuesday (Aug 11) at 11AM. The primary swell is predicted to be 6.0m and 16s period. 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 6.0m 16s and forecast to arrive on Tuesday (Aug 11) 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 1.4m 5s period and expected on Saturday (Aug 15) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 11th Aug)20ft (6.0m) 16s
Best Surf11AM (Tue 11th Aug)20ft (6.0m) 16s
Most Powerful11AM (Tue 11th Aug)20ft (6.0m) 16s

Table - best surf conditions forecast for Cobblestones over the next 16 days.


The Lowdown

G'day, Rusty here. Let's get straight into it. We've got one spot on the radar for this entire stretch, and it's a proper reef break that's going to test you. It's a bit of a wild ride, so let's break down the next couple of weeks.

The big picture is that we're looking at a solid run of south-west groundswell, but it's going to be a game of timing and wind. Most days are going to be a battle with the conditions, but there are a couple of windows where it all comes together. The water is sitting at 67°, which is a solid 4° warmer than usual for this time of year—that's a notable spike, so you can leave the thick rubber at home.

Let's kick things off in the short term. For the next couple of days, Tuesday and Wednesday, there's a serious amount of energy in the water. The combined swell energy is massive, reading 17353 on Tuesday morning, and the swell is pushing a solid 20ft at 16 seconds from the south-west. But, and it's a big but, the wind is howling from the south-west at 19 mph, putting a nasty cross-onshore chop all over it. It's big, it's raw, and frankly, it's just too much for this break. The call is to give it a miss; it's not going to be pretty. Wednesday sees the swell dip to a still-chunky 13ft, but it's still onshore, so it's a washout in my books.

Now, here's where it gets interesting. Thursday the 13th is looking like a proper standout. The swell is still a solid 13ft from the south-west, but the energy has cleaned up a bit. The magic is the wind. It's dropped right out, down to a 3 mph cross-shore breeze in the morning. Glassy conditions on a 16-second groundswell at a reef like this? That's the stuff dreams are made of. The shape should be excellent, and the long period will mean plenty of power. This is the one to point the car at.

Friday the 14th is still good, with the swell easing to a more manageable 12ft. The wind swings to a light cross-offshore from the north-northeast in the morning at 9 mph, which will keep the faces clean. It won't have the same raw power as Thursday, but it's still a quality day with clean conditions.

The weekend sees things get a bit smaller and a bit messier. Saturday the 15th has the swell dropping to 8ft, but the morning moderate breeze and the drop in period to 14 seconds mean it loses some of its punch. Sunday the 16th sees a slight bump back up to 12ft, but the wind and the consistency just aren't there for it to be a standout.

We hit a flat, ugly patch from Monday the 17th through Tuesday the 18th. The wind goes straight onshore and howls, making it completely unsurfable. The energy is still there, but the quality is zero. You'd be better off finding something else to do.

Now, looking further out, we've got another potential winner. The following Wednesday the 19th, the swell kicks back up to a solid 16ft from the west-south-west, and the wind goes light and offshore. Again, the energy is strong, reading 12903. This looks very promising, but it's over a week away, so treat it as promising rather than a sure thing.

The end of the month is a lottery. There are some windows with clean cross-offshore winds and decent swell on the 21st and 22nd, but the periods are shorter and the wind models are less reliable. The absolute last day, the 26th, is a no-go with strong onshore winds.

So, to sum it up: if you can only pick one day, make it Thursday the 13th. It's got the size, the period, and the cleanest conditions. The following Wednesday the 19th is a close second. Get on it.

Rusty, out.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Tue morning, min 12°C on Wed night). Winds decreasing (fresh winds from the SSW on Tue morning, calm by Wed night).

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 18°C on Sat afternoon, min 11°C on Fri morning). Winds increasing (light winds from the WNW on Fri afternoon, fresh winds from the NW by Sun night).

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
!
0
6
6
6
8
8
8
9
7
5
5
2
3
4
5
4
2
0
0
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
6
SW
16
5.5
SW
16
4.5
SW
15
4
SW
15
4
SW
15
4
SW
15
4
SW
16
4
SW
17
4
SW
16
3.5
SW
16
3.5
SW
15
3
SW
14
2.5
SW
14
2.4
WSW
13
2.2
WSW
13
3.5
WSW
15
3.5
WSW
14
3.5
WSW
15
3.5
WSW
17
4
WSW
16
3.5
WSW
16
Wave Graph
Metric surfscale
Energy kJ
17353
14004
9166
7377
6892
7126
8589
9772
8055
6461
5050
3810
2725
1974
1682
5025
4334
4963
6995
7621
6265
Wind (km/h)
30
SSW
25
SW
20
SW
15
WSW
15
WSW
0
SSE
5
NNW
10
WSW
15
ESE
15
NNE
5
WNW
10
ENE
25
NNE
20
NNW
15
NE
20
NNE
15
NNE
20
WNW
30
WSW
25
WSW
15
WNW
Wind State
cross-on
cross-on
cross-on
on
on
glassy
cross
on
cross-off
cross-off
cross-on
off
cross-off
cross-off
off
cross-off
cross-off
cross-on
on
on
cross-on
High Tide
8:35AM1.02m
9:17AM0.98m
9:55AM0.92m
10:26AM0.82m
00:30AM0.56m
10:47AM0.72m
00:00AM0.59m
10:48AM0.62m
11:55PM0.64m
10:00AM0.54m
00:10AM0.70m
Low Tide
5:34PM0.24m
6:03PM0.29m
6:23PM0.35m
6:25PM0.42m
3:53AM0.53m
6:01PM0.46m
5:05AM0.52m
5:10PM0.47m
6:30AM0.52m
4:12PM0.44m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
light rain
clear
clear
clear
clear
rain showers
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:03
7:01
7:01
6:58
6:58
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:46
5:46
5:47
5:49
5:49
5:50
5:51
 mm
2
10
Temp °C
14
14
14
14
14
14
13
14
14
14
16
15
17
18
18
17
18
18
15
16
15
Feels °C
7
8
9
11
11
12
12
13
12
11
13
14
12
13
16
12
13
12
10
10
10
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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