Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 am 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.3°C
1.1° 

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


Cobblestones surf forecast from 5 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 2PM (local time) - 13ft (4.0m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 8PM (local time) - 15ft (4.5m), 17s period, SW swell with 11,855 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 11AM (local time) - 11ft (3.5m), 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 Monday (Sep 07) at 11AM. The primary swell is predicted to be 3.5m and 16s 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 4.5m 17s and forecast to arrive on Sunday (Sep 06) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Tuesday (Sep 08) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Mon 7th Sep)11ft (3.5m) 16s
Best Surf 2PM (Tue 8th Sep)13ft (4.0m) 16s
Most Powerful 8PM (Sun 6th Sep)15ft (4.5m) 17s

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


The Lowdown

Alright folks, Rusty here. Let's look at what's cookin' at just this one break for the next couple weeks. It's a one-horse town, so we gotta ride it or stay home.

The whole run is about one spot: Cobblestones. It's an exposed reef, for the advanced crew only, and it's about to get blasted by a constant stream of southwest groundswell. The whole sixteen days is full of power, but the wind is going to be the deciding factor. The water's at about 65°, which is a hair warmer than usual for this time of year, so that's a solid bonus.

We kick off on Saturday morning, September 5th. There's already a 12 ft swell from the SW with a 14-second period, but that 30 km/h cross-shore from the NNW is going to chop it all up. The combined energy is a hefty 5288, but the quality is poor. Honestly, looks more like a kite day than a paddle day.

Sunday the 6th keeps the energy high. The swell builds to nearly 15 ft by the afternoon with a very long 17-second period. The combined energy hits a massive 10988! But it's still messy with a fresh 30 km/h cross-shore wind from the south-southeast. That super long period at a reef can make things walled up, so it's for the brave and the strong.

Now, Monday the 7th of September morning is where we get our first real highlight. We've got a clean 12 ft swell from the SW at 16 seconds and a gentle cross-offshore breeze from the southeast at 15 km/h. This is it. The energy is still a massive 6877, but the clean wind will make for some lined-up, powerful waves for the experts. Get on it early because the wind goes lumpy in the afternoon.

Tuesday the 8th of September is the absolute standout of the whole forecast. The morning is clean, but the afternoon is a dream. 13 ft of SW at 16 seconds, a 15 km/h cross-offshore from the southeast, and the combined energy is 8277. It's glassy and powerful. That's the session to circle on the calendar.

Wednesday the 9th is still a champion. We drop to about 10 ft from the SW with 15-16 second periods, but now we get a clean offshore wind from the east-northeast. The morning is a moderate 25 km/h offshore, the afternoon is a gentler 15 km/h. The energy is still huge (5015 and 4050). If you miss Tuesday, this is your next best bet.

The swell backs off a touch into the second week. Thursday the 10th and Friday the 11th see the swell drop to around 7 ft or less, with periods getting weirdly long on Friday (20 seconds!). The winds are light and clean on Thursday afternoon, but the energy is down to 2112. Friday looks poor with that super long period and cross-shore winds.

We hit a rough patch from Saturday the 12th through Monday the 14th. Onshore winds and big, messy swell make for truly terrible conditions. Sunday the 13th has a nearly 15 ft lumpy mess. Just stay off the water.

There's another promising window on Tuesday the 15th of September. A clean, gentle cross-offshore breeze from the north-northeast and a solid 10 ft SW swell at 16 seconds. The energy is back up to 5110. This one is promising but less certain, keep it on the radar.

The rest of that week into the final weekend is average. Swell stays around 10 ft to 12 ft, but winds are mostly cross or light, so it’ll be a bit lumpy and not the quality of that first week.

Then a massive red flag for the 19th and 20th of September. The models are showing an 18 ft SW swell with combined energies over 16000. The reports say it's predicted to be too big for this break. If you are a true charger of the highest order, maybe you look, but for everyone else, it's a beach day.

Bottom line: Your golden ticket is Tuesday the 8th of September afternoon. Clean, powerful, and deep. Monday the 7th morning and Wednesday the 9th are your next best bets. Everything else is a gamble or a hard pass.

Stay sharp.
Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Sat afternoon. Very mild (max 17°C on Mon afternoon, min 10°C on Sun night). Winds decreasing (fresh winds from the S on Sat night, light winds from the SE by Mon morning).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Tue afternoon, min 10°C on Tue morning). Winds decreasing (fresh winds from the NE on Thu morning, calm by Thu night).

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
0
2
3
6
8
7
4
7
8
9
6
6
5
4
2
4
4
2
3
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
SW
14
3
WSW
13
4
SSW
10
4
SW
12
4.5
SW
17
4.5
SW
17
3.5
SW
16
3.5
SW
16
4
SW
16
4
SW
16
4
SW
16
3.5
SW
16
3
SW
16
3
SW
15
2.5
SW
15
2
SW
14
1.9
SW
14
1.9
WSW
15
1.4
WSW
20
2
WSW
18
3
WSW
17
Wave Graph
Metric surfscale
Energy kJ
4435
2750
3418
4648
10945
9898
6877
6080
7370
8674
8277
6525
4960
4032
2822
1604
1368
1488
1544
2492
4947
Wind (km/h)
30
NNW
25
WNW
35
SSE
30
SSE
30
SSE
15
ESE
15
SE
30
SSE
25
ESE
25
ESE
15
SE
20
E
25
ENE
15
ENE
25
ENE
30
NE
15
N
5
ESE
15
NW
20
NW
40
W
Wind State
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
glassy
cross
cross
cross-on
High Tide
5:24AM0.86m
6:53AM0.88m
7:55AM0.87m
00:50AM0.59m
8:46AM0.83m
11:34PM0.54m
9:30AM0.77m
10:58PM0.54m
10:08AM0.69m
10:34PM0.56m
Low Tide
2:41PM0.19m
3:20PM0.18m
3:55PM0.19m
4:26PM0.23m
1:13AM0.59m
4:50PM0.28m
2:42AM0.51m
5:02PM0.34m
3:34AM0.45m
4:57PM0.40m
4:22AM0.40m
light rain
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:30
6:28
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:04
6:05
6:06
6:06
6:07
6:07
 mm
2
3
2
12
Temp °C
16
16
15
15
16
12
14
17
13
15
20
16
16
19
17
15
18
17
18
18
17
Feels °C
10
9
10
7
8
6
10
12
7
10
16
12
11
15
13
9
16
16
16
15
13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Cobblestones:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cobblestones surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest