Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 am 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.5°C
1.2° 

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


Cobblestones surf forecast from 2 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 11PM (local time) - 15ft (4.5m), 17s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 8PM (local time) - 16ft (5.0m), 17s period, SW swell with 13,162 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 5AM (local time) - 13ft (4.0m), 15s 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 5AM. The primary swell is predicted to be 4.0m and 15s 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 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 1.0m 4s period and expected on Wednesday (Sep 09) at 11AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 3rd Sep)13ft (4.0m) 15s
Best Surf11PM (Sun 6th Sep)15ft (4.5m) 17s
Most Powerful 8PM (Sun 6th Sep)16ft (5.0m) 17s

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


The Lowdown

Alright, let’s break it down. The only spot firing in this window is Cobblestones. It’s a reef break, and it’s got a solid run of South-West swell coming through, but the wind is going to be a major player most days. The water is sitting at 65°F here, about a touch warmer than normal for this time of year, which is nice.

We start off this Thursday morning (Sept 3) with a chunky 13ft SW swell but it’s a cross-on wind mess. The energy is pumping at 6562, but it’s not clean. That afternoon stays ugly with 35 km/h cross-on wind. Friday morning (Sept 4) looks clean with offshore wind, 16ft SW swell, and a massive 8670 energy reading, but the wind is strong at 30 km/h – it’s going to be big and powerful, only for the experienced. Friday afternoon is the first real standout: 16ft from the WSW and a period of 15 seconds, with a 15 km/h offshore wind. The energy is huge at 11725, and it’s clean. That’s a proper session for the crew that can handle it.

Saturday (Sept 5) is a write-off – strong cross-on wind and messy. Sunday (Sept 6) morning has a 15ft SW swell, but the wind is cross-shore and lumpy. Sunday afternoon is interesting: 10ft but a 17-second period, very long groundswell, with energy at 9193. But it’s cross-shore and lumpy, so that long period might make it tricky at a beach break – Cobblestones is a reef, so it could actually line up well there.

Now, Monday (Sept 7) morning: 13ft SW, 16-second period, and a gentle cross-shore breeze. Energy at 7282. That’s clean, lined up, and powerful – a solid session for advanced surfers. Not the best of the window, but good.

The true standout is Tuesday (Sept 8). Both morning and afternoon are clean. Morning: 13ft SW, 16-second period, cross-off wind at 20 km/h, energy at 8995. Afternoon: 13ft SW, 17-second period, light breeze, energy at 9699. The swell is big (over 8ft), so this is expert territory, but the combination of big, long period groundswell, clean conditions, and a reef break setup is the best on offer. Crowds are possible there sometimes.

Wednesday (Sept 9) morning is the only other standout: 12ft WSW, 16-second period, gentle offshore wind at 15 km/h, and the notes say “exceptional surf conditions for expert surfers.” Energy at 5287. That’s another clean, powerful session.

After that, the swell drops off. The rest of the week (Sept 10 onward) is a mix of smaller, weaker swell with poor wind or chop. Some days have clean cross-off wind but the swell is only 7ft, so it’s not the same punch. Sept 11 and 12 are blown out with strong wind. Sept 13 to 16 are mostly marginal, with energy dropping to the 2000s and 4000s, and the wind rarely cooperating.

The real picks are Friday afternoon Sept 4, and Tuesday Sept 8. Both offer big, clean, long period swell with good wind. If you’re an expert, that’s your window.

Rusty

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat night. Very mild (max 16°C on Thu morning, min 12°C on Sat night). Winds increasing (light winds from the NW on Thu morning, near gales from the S by Sat night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Tue afternoon, min 10°C on Tue night). Winds decreasing (fresh winds from the SSE on Sun morning, light winds from the SSE by Tue afternoon).

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
6
5
0
0
0
0
6
9
7
4
5
8
8
8
6
2
4
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
15
3.5
SW
14
5
WSW
11
5
SW
13
5
WSW
15
4.5
SW
14
3.5
WSW
14
4
WSW
13
5.5
SW
12
4.5
SW
13
3
WSW
17
4.5
SW
17
4
SW
16
3.5
SW
16
3.5
SW
15
4
SW
16
4
SW
17
3.5
SW
16
3.5
WSW
16
3
SW
15
2.5
SW
15
Wave Graph
Metric surfscale
Energy kJ
6562
4692
5841
8443
11593
7919
4067
5133
7751
6477
5051
10558
7173
6003
5948
8995
9699
7126
5287
4086
2736
Wind (km/h)
25
NW
35
WNW
45
WSW
30
SW
15
SW
20
NW
35
NW
30
WNW
45
S
35
SSE
30
SSE
15
ESE
15
SSE
30
SSE
20
ESE
20
SE
10
SSE
20
E
15
NE
20
SSW
25
ENE
Wind State
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross
cross
cross-off
cross-off
cross
off
off
cross-on
off
High Tide
1:15AM0.84m
2:47AM0.85m
5:24AM0.86m
6:53AM0.88m
7:55AM0.87m
00:50AM0.59m
8:46AM0.83m
11:34PM0.54m
Low Tide
1:11PM0.31m
1:59PM0.24m
2:41PM0.19m
3:20PM0.18m
3:55PM0.19m
4:26PM0.23m
1:13AM0.59m
4:50PM0.28m
2:42AM0.51m
cloud
part cloud
light rain
part cloud
clear
part cloud
light rain
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:35
6:33
6:31
6:31
6:30
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:02
6:04
6:04
6:05
6:06
6:06
 mm
2
2
2
5
Temp °C
16
16
16
15
13
14
15
16
13
14
15
12
14
16
13
15
19
17
15
18
18
Feels °C
10
9
8
8
8
9
10
10
2
5
7
7
11
10
8
11
16
14
11
17
16
  • 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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