Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 pm 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
19.4° C
2.0° 

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


Cobblestones surf forecast from 12 Aug 2026:

  • Best quality surf: Monday 17 Aug, 11AM (local time) - 13ft (4.0m), 18s period, WSW swell with cross-shore winds.
  • Most powerful swell: Monday 17 Aug, 8PM (local time) - 15ft (4.5m), 17s period, WSW swell with 12,115 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 2AM (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 (Aug 13) at 2AM. 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 4.5m 17s and forecast to arrive on Monday (Aug 17) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Wednesday (Aug 19) at 11AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 13th Aug)13ft (4.0m) 15s
Best Surf11AM (Mon 17th Aug)13ft (4.0m) 18s
Most Powerful 8PM (Mon 17th Aug)15ft (4.5m) 17s

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


The Lowdown

Alright, Rusty here. Let’s get into it.

We’ve got a solid run of groundswell heading to Cobblestones, but it’s going to get rowdy. The water is sitting at 67°, which is a touch warmer than normal for this time of year – nothing crazy, but noticeable if you’re used to a chill on your feet.

The standout window is clear as day: Thursday morning, August 13th. That’s the pick of the whole period. You’ve got a 13-foot SW groundswell with a long 16-second period, but the wind is glassy – dead calm. That’s a rare combo on this reef. The wave energy is pumping at 9419 (moderate to strong), and it’s aiming straight in from the optimum SSW direction. This is exceptional, expert-only territory. Over 8 feet, so leave the foamies at home. Expect lined-up, powerful reef waves with no wind to mess ‘em up. Cobblestones is an exposed spot, so that glass will give you absolute perfection.

Thursday afternoon (August 13th) is still fun, with a 13-foot SW swell and a 17-second period, energy at 9854, but the wind goes cross-on at 6 mph – a light breeze, but it’s not glass. Still good for experts, but the morning is the true gem.

Friday morning (August 14th) keeps the quality up: 12 feet SW at 16 seconds, clean with a cross-off NNE breeze at 6 mph. Energy is still solid at 5898. The waves will be a little more manageable for strong experienced surfers.

That Thursday morning, August 13th, is the one you circle on the calendar. Whole lot of power, no wind, reef lines. Be there or be square.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Fri afternoon, min 11°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 30mm), heaviest during Mon afternoon. Warm (max 20°C on Sun afternoon, min 13°C on Mon night). Winds increasing (light winds from the NE on Sat night, strong winds from the NNW by Mon morning).

Wed
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
6
8
9
8
8
6
4
5
3
4
5
3
3
4
!
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
SW
15
4
SW
15
4.5
SW
16
4
SW
17
4
SW
16
3.5
SW
16
3.5
SW
15
3
SW
14
2.5
SW
14
2.5
WSW
13
2.1
WSW
13
3
WSW
14
3
WSW
14
3
WSW
15
4
WSW
18
4.5
WSW
17
4.5
WSW
16
4.5
WSW
16
4.5
WSW
16
3.5
WSW
15
Wave Graph
Metric surfscale
Energy kJ
6892
7500
9419
9854
7675
5898
4763
3810
2844
2359
1555
4160
3761
3879
9510
11794
10122
10481
9482
5812
Wind (km/h)
15
SW
5
S
5
NW
10
SW
10
ESE
10
NNE
5
NW
10
NE
25
NNE
15
N
15
ENE
30
NNE
25
NNE
20
NNW
50
NNW
45
W
40
SW
15
SW
20
WNW
35
NNW
Wind State
on
glassy
glassy
cross-on
cross-off
cross-off
cross
off
cross-off
cross-off
off
cross-off
cross-off
cross
cross
on
cross-on
on
cross-on
cross
High Tide
9:55AM0.92m
10:26AM0.82m
00:30AM0.56m
10:47AM0.72m
00:00AM0.59m
10:48AM0.62m
11:55PM0.64m
10:00AM0.54m
00:10AM0.70m
00:37AM0.74m
Low Tide
6:03PM0.29m
6:23PM0.35m
6:25PM0.42m
3:53AM0.53m
6:01PM0.46m
5:05AM0.52m
5:10PM0.47m
6:30AM0.52m
4:12PM0.44m
3:35PM0.38m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
heavy rain
thunderstorm
clear
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
6:58
6:58
6:56
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:46
5:47
5:49
5:49
5:50
5:51
5:52
 mm
2
1
21
6
1
Temp °C
14
14
13
13
13
14
16
15
16
17
16
17
20
19
18
15
14
14
15
15
Feels °C
11
12
12
11
11
12
14
14
11
13
15
10
14
15
12
10
5
8
10
8
  • Map Icons:
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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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