Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 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), 17s period, W swell with onshore winds.
  • Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 18ft (5.5m), 16s period, WSW swell with 13,838 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 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 (Aug 13) 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 5.5m 16s and forecast to arrive on Tuesday (Aug 18) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Wednesday (Aug 19) at 8AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 13th Aug)13ft (4.0m) 15s
Best Surf11AM (Mon 17th Aug)13ft (4.0m) 17s
Most Powerful 8AM (Tue 18th Aug)18ft (5.5m) 16s

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


The Lowdown

Alright mate, Rusty here, and I’ve had a proper look at what’s on the cards for the next couple of weeks. Let’s get straight into it.

We’ve only got one spot in the mix, and it’s a solid one when conditions line up. Cobblestones is an exposed reef break that loves a good SSW swell. The water is sitting about average for this time of year, so no surprises there. The first window of quality kicks off right away on Thursday, August 13th.

Thursday morning is the absolute standout. We’re looking at a clean 15 ft SW groundswell with a 16-second period, packing some serious energy (9419). The wind is glassy offshore from the NW at just 3 mph. This is world-class stuff for advanced surfers, but don’t even think about it if you’re not an expert. Crowds are possible, but for a wave this good, you’ll be sharing it with people who know what they’re doing. Thursday afternoon drops off a bit as the wind swings cross-onshore, but the swell sticks around.

Friday morning, August 14th, is another cracker. The swell drops to 12 ft from the SW, period still a long 16 seconds, and the wind is a clean cross-offshore from the NNE at 6 mph. It’s still a heavy wave, but the energy is a bit more manageable (6148). This is still excellent for experienced surfers.

After Friday, the quality starts to fade. The wind gets stronger over the weekend, with a fresh breeze on Saturday and Sunday mornings, though the swell remains around 8-10 ft. The surf is still there, but it’s not the same clean, glassy perfection we started with.

We hit a rough patch from Monday, August 17th, through to the end of the first week. The swell gets huge, pushing 16-18 ft, but the wind is wild—onshore, strong, and sometimes near-gale force. The combined energy spikes to ridiculous levels (17388 on Monday morning), but it’s just too big, too messy, and blown out. This is kite-surfing territory, not paddling.

There’s a bit of a lull in the middle of the second week, with smaller surf and inconsistent conditions. But keep your eyes on Sunday, August 23rd and Monday, August 24th. Sunday afternoon sees a 12 ft SW swell with a 14-second period, and while the wind is a gentle cross-shore, it’s rideable. The real gem is Monday afternoon, August 24th: a small 4 ft WSW groundswell, but with a 20-second period and glassy offshore conditions. It’s clean, lined up, and perfect for a longboard or a funboard. Not huge, but beautiful.

Looking further ahead, Tuesday, August 25th, shows a promising pulse of 13 ft WSW swell with a 17-18 second period. The wind is light, but cross-shore, so it’ll be a bit textured. The energy is strong (10153), and it’s worth a look if you’re an experienced surfer.

The very end of the outlook, Friday, August 28th, is a write-off with strong winds and lumpy conditions.

Overall, the best of the best is Thursday morning, August 13th at Cobblestones. That’s the one you don’t miss. The Monday afternoon, August 24th, session is a sleeper hit for smaller, glassy waves. Everything else is either for experts only or waiting for a better window.

Stay frothing,
Rusty

Short Range Forecast

Mostly dry. Very mild (max 17°C on Sat afternoon, min 11°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 11mm), heaviest on Mon morning. Very mild (max 19°C on Sun afternoon, min 13°C on Mon afternoon). Winds increasing (light winds from the NNE on Sat night, near gales from the W by Mon afternoon).

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
8
9
8
8
7
4
5
3
4
5
3
4
0
!
0
!
!
7
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
4.5
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
3
WSW
16
3
WSW
14
3
WSW
14
3
WSW
16
4
W
17
5
WSW
12
5.5
WSW
15
5.5
WSW
16
5
WSW
16
4
WSW
15
Wave Graph
Metric surfscale
Energy kJ
7500
9419
9736
7675
6148
4699
3810
2844
2359
4019
4160
3761
4084
9213
7134
12372
13711
12021
6769
Wind (km/h)
5
S
5
NW
10
SW
15
ESE
10
NNE
5
NW
10
NE
25
NNE
10
N
10
ENE
30
NNE
20
NNE
25
NW
45
W
50
WSW
30
SW
15
WNW
20
NW
35
NW
Wind State
glassy
glassy
cross-on
cross-off
cross-off
cross
off
cross-off
cross-off
off
cross-off
cross-off
cross-on
on
on
cross-on
cross-on
cross
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
6:23PM0.35m
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
mod rain
light rain
rain showers
cloud
part 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
7
3
1
2
Temp °C
14
13
14
14
14
16
15
16
17
16
17
19
18
18
13
14
14
15
16
Feels °C
12
12
12
12
12
14
15
11
14
15
11
13
14
11
2
5
10
10
7
  • 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