Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.2°C
1.0° 

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


Cobblestones surf forecast from 6 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, 11PM (local time) - 13ft (4.0m), 17s period, SW swell with 10,206 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 4.0m 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 1.8m 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 Powerful11PM (Sun 6th Sep)13ft (4.0m) 17s

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


The Lowdown

Alright, Rusty here. Let’s break down what’s coming our way for Cobblestones. It’s a reef setup, so we’re looking at a wave that knows what it’s doing, and it demands respect. This is for advanced surfers only, no question.

We’ve got a solid run of swell, but the wind is going to be a real chatterbox for most of it. The first real standout window kicks off on Monday, September 7th. The morning is where it’s at. We’ve got a clear sky, a 12ft SW groundswell with a very long 16-second period, and a gentle cross-off breeze from the SE. That combo is pumping out serious energy. This is the kind of session you dream about. The water temp is about average for this time of year.

Monday afternoon takes a turn. The wind swings onshore and gets fresh, making things lumpy and messy. Not our day.

Tuesday, September 8th, is another good shout. Both morning and afternoon are clean with that same 13ft SW groundswell and a 16-second period. The wind is a light cross-off, keeping things glassy. The wave energy is massive. This is serious, powerful surf. It’s over 8ft, so only experts should be out there.

Wednesday the 9th still has size, with 10ft of SW swell and a 15-second period, but the morning wind is a bit stronger. The afternoon cleans up nicely with a light NE offshore breeze. It’s not a standout compared to Monday and Tuesday, but still good for experienced surfers. Crows are sometimes a factor here, so expect company on the best days.

Thursday the 10th drops off a bit in size, down to 7ft, and the wind gets a bit messy. Not our best session.

We hit a real rough patch starting Friday the 11th. The swell is still present but the wind goes straight onshore or cross-onshore. Saturday the 12th is a write-off with poor conditions, and Sunday the 13th is even worse with 15ft of onshore slop. This stretch from Friday afternoon through to the weekend is just not worth paddling out for a proper surf. You’d be better off with a kite if you’re into that, because the wave energy is there but the quality is shot.

There’s a slight improvement on Monday the 14th. The morning is clean with an 12ft SW swell and a light offshore, but it’s not a standout.

We then hit another lull from Tuesday the 15th through to Saturday the 19th. Winds are mostly onshore or cross-onshore, the swell is up and down, and the quality is poor to marginal. It’s a long, quiet gap of almost a week.

Here’s the highlight of the whole 16-day window, and it’s a distant one but a proper banger. Mark your calendar for Sunday, September 20th. The morning is looking exceptional. We’ve got a 13ft WSW swell, a clean cross-off breeze from the north, and the wave energy is through the roof. The guidance says this is a 9/10. This is the one to plan for if you can wait. The afternoon is also clean with the same size but a bit less energy, still a great option. It’s promising, but being that far out, take it with a pinch of optimism.

After that, Monday the 21st and Tuesday the 22nd go back to poor, choppy conditions with onshore winds. The run ends on a sour note.

So, best bets are the 7th, 8th, and the big one on the 20th. Get on it if you’re keen.

- Rusty

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue afternoon, min 11°C on Sun night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Very mild (max 19°C on Wed night, min 12°C on Thu morning). Winds increasing (light winds from the NNW on Thu afternoon, fresh winds from the W by Sat morning).

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
8
7
4
7
8
8
6
4
5
4
2
3
4
3
2
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4.5
SW
17
3.5
SW
16
3.5
SW
16
4
SW
16
4
SW
16
4
SW
16
3.5
WSW
16
3
SW
15
3
SW
15
2.4
SW
15
2
SW
14
1.9
SW
15
1.9
WSW
15
1.5
WSW
19
2.5
WSW
18
3
WSW
16
2.5
WSW
16
3
WSW
15
3.5
WSW
14
Wave Graph
Metric surfscale
Energy kJ
9898
6877
6080
7277
8995
7961
5775
4032
3622
2560
1626
1576
1546
1592
3814
4136
2924
3706
4618
Wind (km/h)
20
ESE
15
SE
30
SSE
25
SE
20
ESE
15
ESE
20
E
25
ENE
10
NE
20
ENE
25
NE
5
NNW
20
ENE
20
NNW
20
NW
30
WNW
30
W
25
WNW
35
WNW
Wind State
cross-off
cross-off
cross
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross
off
cross
cross-on
cross-on
on
cross-on
cross-on
High Tide
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
10:39AM0.60m
10:24PM0.61m
Low Tide
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
4:28PM0.44m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:30
6:28
6:26
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:05
6:06
6:06
6:07
6:07
6:07
 mm
3
1
Temp °C
12
15
17
13
16
20
15
16
20
19
15
18
17
18
18
18
16
16
16
Feels °C
5
12
12
7
11
16
10
10
17
15
10
15
15
16
15
16
10
11
10
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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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