Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 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 4 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 8AM (local time) - 11ft (3.5m), 16s period, SW swell with offshore winds.
  • Most powerful swell: Sunday 6 Sep, 11PM (local time) - 15ft (4.5m), 17s period, SW swell with 11,707 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 8AM (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 Wednesday (Sep 09) at 8AM. The primary swell is predicted to be 3.5m and 16s period with a secondary swell of 1.1m and 6s. The wind is predicted to be 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 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Tuesday (Sep 08) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Wed 9th Sep)11ft (3.5m) 16s
Best Surf 8AM (Wed 9th Sep)11ft (3.5m) 16s
Most Powerful11PM (Sun 6th Sep)15ft (4.5m) 17s

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


The Lowdown

Alright, Rusty here, talkin’ in feet and miles per hour. Let’s look at the next couple of weeks.

Honestly, the first few days are a bit of a write-off. We’ve got a solid 12ft to 15ft SW groundswell rollin’ in, but the wind is nasty. Saturday morning (5th Sep) it’s a lumpy, cross-shore mess with a fresh 19 mph breeze, and the sea state is just chopped up. The combined energy is massive, over 5000 (5224), but it’s wasted. Sunday’s got a bigger 15ft swell with a 17-second period and a combined energy of 11778, but the wind is still a fresh cross-shore 19 mph making it lumpy. It’s just not clean. For reef breaks like Cobblestones, that’s a heartbreaker.

Now, Monday morning (7th Sep) is where it starts to turn. The swell drops a touch to 12ft, still solid SW groundswell, but the wind swings to a gentle 9 mph cross-offshore breeze, and the report says "clean." The water is a touch warmer than normal at 65°F, which is a nice bonus. This is a solid, proper session for the advanced crew.

But the real standout, the one you wait for, is Tuesday morning (8th Sep) . The swell bumps back up to 13ft from the SW, with a 16-second period and a massive combined energy of 9392. The wind is a moderate 12 mph cross-offshore, keeping it clean. That’s a recipe for long, powerful, grinding lines at this reef. It’s the best of the first week, no question. Expect crowds here, as it’s a known spot and it’s gonna be firing.

Wednesday morning (9th Sep) is also a gem. The swell is still 12ft from the SW, but the wind is a light 3 mph offshore from the ENE. Glassy, clean, perfect conditions. The combined energy is 5250. This is prime, top-tier surfing for experts.

The swell starts to wind down towards the end of the first week, and by the 12th we’re looking at onshore winds and poor surf. There’s a 3-day gap from the 12th to the 14th with nothing really worth paddling out for.

Lookin’ further out, the second week has a couple of promising but less certain windows. Tuesday morning (15th Sep) swings back with a 13ft SW groundswell, a 15-second period, and a clean 16 mph cross-offshore breeze. The combined energy is 8677. It’s a long-range call, but the signs are good.

Then Sunday morning (20th Sep) is a monster, but it’s a caveat. There’s a 20ft SW groundswell predicted with a 17-second period, and the combined energy is a whopping 20234. The wind is light, which is great, but the forecast itself says the swell is predicted to be too big for this break. For a reef, that’s a massive, dangerous wall of water only for the absolute elite, and even then, it might just be closing out. It’s a spectacle, but not a friendly session.

So to wrap it up: the clear winners are Tuesday morning (8th Sep) and Wednesday morning (9th Sep). Monday morning (7th Sep) is a solid warm-up. Don’t waste your time on the first few days.

Rusty

Short Range Forecast

Light rain (total 7mm), mostly falling on Sat afternoon. Very mild (max 17°C on Sat 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 11°C on Tue morning). Mainly fresh winds.

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
0
2
6
8
6
4
7
8
8
6
6
5
4
2
4
4
3
4
2
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
3
SW
10
3.5
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
3.5
SW
15
3
SW
15
2.5
SW
15
2.1
SW
14
1.8
SW
14
1.9
SW
16
1.3
WSW
20
1.7
WSW
19
2.2
WSW
17
Wave Graph
Metric surfscale
Energy kJ
4435
2941
1932
3452
11279
10185
6963
6158
7277
9392
8640
6525
5250
4412
2822
1728
1253
1776
1240
1960
2855
Wind (km/h)
30
NW
25
WNW
35
SSE
30
SSE
30
SSE
20
SE
15
SE
30
SSE
20
ESE
20
SE
15
SSE
20
ESE
25
ENE
5
ENE
30
ENE
25
NE
10
N
10
NE
20
NNE
20
N
30
NNW
Wind State
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
off
off
off
cross-off
cross-off
off
cross-off
cross-off
cross
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
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
rain showers
<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
10
Temp °C
16
17
15
15
15
12
14
17
13
16
20
17
16
20
18
15
17
16
18
19
17
Feels °C
10
10
10
7
7
7
10
12
7
11
16
13
11
18
15
10
13
15
14
15
16
  • 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