Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.2°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 8 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 5PM (local time) - 13ft (4.0m), 16s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 2PM (local time) - 13ft (4.0m), 16s period, SW swell with 8,094 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 5PM (local time) - 13ft (4.0m), 16s period with WSW 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 (Sep 08) at 5PM. The primary swell is predicted to be 4.0m 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 4.0m 16s and forecast to arrive on Tuesday (Sep 08) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Sep 08) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 8th Sep)13ft (4.0m) 16s
Best Surf 5PM (Tue 8th Sep)13ft (4.0m) 16s
Most Powerful 2PM (Tue 8th Sep)13ft (4.0m) 16s

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


The Lowdown

Alright folks, Rusty here.

We’re looking at a solid run of swell for Cobblestones, but the wind is going to be the story. This is an advanced reef break, so it’s not for the faint of heart. We've got a good groundswell lining up, with very long 16-second periods early on, which is going to put some serious energy into the water. The combined energy is reading strong (8888) to very strong (12630) across the period, so there’s plenty of power.

The water’s sitting at 65°, which is a touch warmer than average for this time of year – a nice little bonus if you’re paddling out.

The standout is hands down early Tuesday morning (8th September). The swell is a solid 13ft from the SW, period hitting 16 seconds, and the wind is a moderate cross-offshore from the ESE. That’s clean, powerful, and very serious. Only for experts. But if you’ve got the skills, that session is as good as it gets in these parts. The afternoon glass-off on Thursday the 10th is another one to circle – you’ve got 7ft of WSW swell with a glassy N wind. That’ll be clean and much more manageable.

Later in the week, watch out for the onshore winds kicking in. From Saturday the 12th onward, we’ve got W and WSW winds blowing straight on or cross-on, making things choppy and lumpy. The swell stays big, but the quality drops hard - that’s kite-surf territory more than paddle. We get a brief window of relief early Monday the 14th with light offshore winds and 12ft of swell, but the wind swings again by the afternoon.

Into the second week, the pattern stays active but messy. There’s a real gem on Tuesday the 15th morning – glassy conditions again with 10ft of SW groundswell, but that’s a short-lived window before the cross-on wind returns. The bigger stuff rolls in around the 20th and 21st with 16ft+ swells and strong cross/onshore winds. That’s massive, dangerous, and blown out – leave it for the tow crew or the kites.

Overall, there are a couple of absolute standout windows, but you have to be sharp and ready to go at dawn. We’ve got roughly a week of solid to excellent waves, then a couple of days of sloppy but big surf, then another messy but powerful finale. You’re surfing a reef, so pay attention to the direction and don’t get caught inside on a big set.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Tue afternoon, min 9°C on Wed morning). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 12°C on Sun night). Winds decreasing (fresh winds from the WNW on Fri night, light winds from the SE by Sun night).

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
8
8
5
5
5
4
4
4
4
4
5
0
2
2
0
0
0
5
5
4
6
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
SW
16
4
WSW
16
3.5
WSW
16
3
SW
15
3
SW
15
2.4
SW
15
2
SW
14
2
WSW
15
2.1
WSW
15
2.1
WSW
16
3
WSW
18
3
WSW
16
3
WSW
16
2.5
WSW
15
2.5
WSW
14
3
WSW
14
3.5
WSW
14
3.5
WSW
14
3.5
WSW
14
4
SW
15
3.5
SW
15
Wave Graph
Metric surfscale
Energy kJ
8888
7354
5424
4032
3622
2525
1649
1737
1953
2200
5132
4055
4318
3284
2907
3137
4938
4249
4916
6847
6185
Wind (km/h)
20
ESE
15
ESE
15
ESE
20
ENE
10
ENE
25
ENE
20
NE
5
N
15
NE
20
NNE
20
N
30
NW
20
W
20
WNW
35
WNW
30
WNW
25
WSW
10
SE
5
N
20
S
20
E
Wind State
cross-off
cross-off
cross-off
off
off
off
off
glassy
off
cross-off
cross-off
cross-on
on
cross-on
cross-on
cross-on
on
cross-off
cross-off
cross-on
cross-off
High Tide
00:50AM0.59m
8:46AM0.83m
11:34PM0.54m
9:30AM0.77m
10:58PM0.54m
10:08AM0.69m
10:34PM0.56m
10:39AM0.60m
10:24PM0.61m
11:00AM0.51m
10:28PM0.67m
10:57AM0.43m
10:43PM0.72m
Low Tide
4:26PM0.23m
1:13AM0.59m
4:50PM0.28m
2:42AM0.51m
5:02PM0.34m
3:34AM0.45m
4:57PM0.40m
4:22AM0.40m
4:28PM0.44m
5:12AM0.37m
3:38PM0.43m
6:09AM0.37m
2:41PM0.40m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
rain showers
rain showers
clear
rain showers
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:28
6:26
6:26
6:24
6:22
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:06
6:07
6:07
6:07
6:08
6:09
 mm
3
1
1
Temp °C
16
19
15
14
19
18
16
19
17
17
18
18
16
17
16
17
17
15
16
15
15
Feels °C
11
15
10
9
15
14
12
16
14
14
15
15
11
13
11
11
13
12
15
13
12
  • Map Icons:
  • Break
  • 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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