Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 pm 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.6°C
1.4° 

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


Cobblestones surf forecast from 1 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 2PM (local time) - 15ft (4.5m), 16s period, SW swell with offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 5AM (local time) - 16ft (5.0m), 17s period, SW swell with 13,409 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 2AM (local time) - 11ft (3.5m), 14s 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 Thursday (Sep 03) at 2AM. The primary swell is predicted to be 3.5m and 14s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Cobblestones in the next 16 days are 5.0m 17s and forecast to arrive on Tuesday (Sep 08) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 3rd Sep)11ft (3.5m) 14s
Best Surf 2PM (Tue 8th Sep)15ft (4.5m) 16s
Most Powerful 5AM (Tue 8th Sep)16ft (5.0m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it. We’ve got one spot on the radar for this whole 16-day stretch, and it’s a bit of a wild ride, so let’s break it down.

The overall picture is a massive pulse of south-west swell slamming into this exposed reef, but it’s gonna be a battle with the wind for most of the run. This isn’t a beginner’s game; we’re talking serious, powerful groundswell with periods stretching from 13 to 16 seconds, which means deep water energy piling up fast. The water temp is sitting at 64.6°, which is pretty normal for this time of year, so no surprises there.

First up, we start on Tuesday, September 1st. The swell is already a solid 9.8ft from the WSW, but the wind is on it and the conditions are marginal. The combined energy is a hefty 3361 (moderate wave energy), but it’s just not clean. That carries into Wednesday the 2nd where the swell jumps to 11.5ft and the wind cranks up to 15.5 mph, making it a write-off. Thursday the 3rd is even bigger at 13.1ft, but with 24.9 mph cross-on winds, it’s a total mess. The energy is ramping into the very strong category (6044 and 5875), but you’d be mad to paddle out.

Friday the 4th is the first real standout. The morning is still a choppy 16.4ft, but by the afternoon, the wind swings offshore from the SW, and the swell holds at 16.4ft with a 15-second period. The energy hits a massive 11849 (very strong energy). This is a big, powerful wave for experts only. It’s a proper groundswell, and at a reef like Cobblestones, it’ll be bowling, but it’s not for the faint-hearted.

The weekend is a write-off. Saturday the 5th has near-gale winds, and Sunday the 6th is messy again, though the late afternoon Sunday shows a 16.4ft swell from the WSW with a 16-second period and 12.4 mph offshore wind. The energy is 13028 (very strong), and the score is a 6. That’s a solid window for the experienced crew.

Monday the 7th is another good window. The swell drops slightly to 14.8ft, but the period is still 16 seconds, and the wind is a gentle 9.3 mph offshore. The energy is 9311 and 10321 (very strong). This is quality, clean surf on a big, long-period swell. It’s a standout day for experts.

Tuesday the 8th is the best of the whole run. The morning sees a 14.8ft, 16-second swell with only 3.1 mph of wind—essentially glassy. The energy is 9286 (very strong) and the score is an 8. This is as clean as it gets for such a big wave. The afternoon drops to 13.1ft, 16-second swell, but the wind comes onshore slightly. The morning session on the 8th is the absolute call.

After that, the swell backs off. The 9th through the 11th see 9.8ft to 7.9ft waves with cross-offshore winds, but the energy is dropping fast (down to 4021 and 2587). It’s still surfable, but not the quality of the previous days. The 12th and 13th are poor again, with onshore winds and moderate energy.

The next real highlight is a week and a half out, on Tuesday, September 15th. The morning offers a 7.5ft, 13-second swell with light offshore winds from the E. The energy is 2438 (moderate), and the score is a 4. This is clean, smaller, and much more manageable. It’s a good call for intermediate surfers who want a piece of the action without the massive size.

The run ends on the 16th with the wind picking up again, blowing the 11.5ft swell out. It’s a solid finish to a big, moody forecast.

There’s a big gap in quality, but the standout is definitely Tuesday, September 8th morning.

Short Range Forecast

Light rain (total 6mm), mostly falling on Wed morning. Very mild (max 16°C on Wed morning, min 14°C on Tue afternoon). Winds increasing (calm on Wed night, strong winds from the WSW by Thu night).

Days 5-7 Weather Summary

Moderate rain (total 16mm), heaviest on Sat afternoon. Very mild (max 16°C on Fri afternoon, min 11°C on Sat afternoon). Winds decreasing (gales from the SW on Sat afternoon, light winds from the W by Sun night).

Tue
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
2
6
0
0
0
0
6
0
0
0
0
0
6
7
5
0
8
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
14
3.5
SW
14
3.5
SW
13
3.5
SW
13
3.5
SW
14
4
SW
14
4
SW
14
4.5
WSW
14
5
WSW
13
4.5
WSW
15
4
WSW
14
3
SW
14
5.5
SW
10
6
SW
12
5
SW
13
3.5
WSW
16
4.5
SW
16
4
SW
16
4
SW
16
4.5
SW
16
Wave Graph
Metric surfscale
Energy kJ
3148
4194
4447
4332
5453
6044
5875
8070
7776
9600
6868
3663
6399
10012
7638
6347
10008
7253
8284
10818
Wind (km/h)
15
WSW
25
W
25
SW
20
SSW
0
WSW
25
NW
40
WNW
40
WSW
20
W
15
W
30
WNW
40
NW
55
SW
40
SSW
25
SSW
20
SSW
10
W
20
W
20
SW
25
SE
Wind State
on
on
on
cross-on
glassy
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-off
High Tide
11:57PM0.78m
00:29AM0.82m
1:15AM0.84m
2:47AM0.85m
5:24AM0.86m
6:53AM0.88m
Low Tide
3:46PM0.49m
10:34AM0.40m
1:11PM0.31m
1:59PM0.24m
2:41PM0.19m
3:20PM0.18m
3:55PM0.19m
cloud
cloud
light rain
rain showers
cloud
part cloud
light rain
rain showers
cloud
part cloud
part cloud
rain showers
heavy rain
rain showers
clear
clear
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:35
6:35
6:33
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:01
6:01
6:02
6:04
6:04
6:05
 mm
1
1
1
3
2
12
2
Temp °C
15
15
16
16
15
15
16
16
15
16
15
16
13
14
14
14
14
15
16
16
Feels °C
10
11
11
11
12
11
8
8
9
11
11
8
1
5
7
8
10
12
12
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