Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 am 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
19.8° C
2.3° 

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


Cobblestones surf forecast from 8 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 5AM (local time) - 20ft (6.0m), 16s period, SW swell with cross-onshore winds.
  • Most powerful swell: Tuesday 11 Aug, 5AM (local time) - 20ft (6.0m), 16s period, SW swell with 18,409 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 5AM (local time) - 20ft (6.0m), 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 Sunday (Aug 09) at 5AM. The primary swell is predicted to be 6.0m and 16s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Cobblestones in the next 16 days are 6.0m 16s and forecast to arrive on Tuesday (Aug 11) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Saturday (Aug 15) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 9th Aug)20ft (6.0m) 16s
Best Surf 5AM (Sun 9th Aug)20ft (6.0m) 16s
Most Powerful 5AM (Tue 11th Aug)20ft (6.0m) 16s

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


The Lowdown

Hey folks, Rusty here. Let’s talk about Cobblestones. This one’s a gem, but it’s not for the faint of heart. It’s an advanced reef break, and it’s got some serious power behind it. The water’s running 68°F, which is about 4°F warmer than normal for this time of year, so that’s a real treat, you won’t need a thick suit.

We're starting out with a bit of a washout. The next couple of days, Sunday the 9th and Monday the 10th, are going to be a write-off. We’ve got solid swell coming in—around 16ft down to 15ft—but the wind is howling onshore and it’s just messy. The energy is there, with readings like 13065 kJ and later 4725 kJ, but it’s not gonna be any fun. You’re better off staying home.

The first real window of opportunity shows up Tuesday the 11th. Swell jumps to 20ft from the SW with a 16-second period. That’s a lot of juice, about 16966 kJ of energy. Look, this is way too big. It’s expert-only, and even then, the cross-onshore wind is going to have it all chopped up. It’s a pass, unless you're a masochist.

Things settle down a bit mid-week. Wednesday and Thursday the 12th and 13th, we’ve got 13ft SW swells with that long 14-16 second period. Still big, still only for experts. But the wind is starting to ease off. Thursday afternoon the wind drops light, and it’s looking cleaner. It’ll be hefty but there’s some potential for the crew who know what they're doing.

Now, Friday the 14th. This is where it comes together. The swell drops to a still-chunky 12ft from the SW, and the wind swings to a light offshore from the NNE. The energy is moderate, around 6461 kJ, but the quality of the wave will make up for it. It’s going to be clean, proper lines. This is your standout day for the first week. Saturday the 15th backs off a bit to 8ft; it’s cleaner but weaker, a distant second.

Then we’ve got a bit of a lull Sunday and Monday, with the swell picking up again on Monday the 17th to 18ft from the WSW with a 17-second period. That’s a big, powerful groundswell with 16627 kJ of energy, but it’s just too big for this spot. The wind is on it as well, so it's a no-go.

The rest of that week gets messy again, with strong winds and lumpy conditions. We’re back to the drawing board until Friday the 21st. The swell is down to 10ft from the SW with a 13-second period, and we get light offshore winds again. It’s a smaller version of that Friday the 14th setup—clean, but with less power. Not as good, but still a worthwhile option for experienced surfers.

There’s a couple more smaller pulses over the weekend, but nothing that’s going to hold a candle to that Friday the 14th session. So, mark your calendar for the 14th. That’s the one.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 16°C on Sun afternoon, min 10°C on Mon afternoon). Winds decreasing (strong winds from the SSW on Mon afternoon, moderate winds from the SW by Tue night).

Days 4-6 Weather Summary

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

Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
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
0
!
!
0
6
5
5
7
7
7
9
7
5
5
3
3
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
5
SW
16
4.5
SW
16
4
SW
14
4.5
SW
10
5.5
SW
12
6
SW
15
6
SW
16
5.5
SW
16
4.5
SW
15
4
SW
14
4
SW
14
4
SW
15
4
SW
16
4
SW
16
4
SW
16
3.5
SW
16
3.5
SW
15
3
SW
14
2.5
SW
14
2.5
SW
14
3
WSW
14
Wave Graph
Metric surfscale
Energy kJ
12517
9370
6200
4725
8546
17713
16966
14004
9047
6912
6448
7126
7239
8177
8055
6461
4699
3195
2267
2609
3247
Wind (km/h)
25
SW
25
WSW
35
W
45
WSW
45
SSW
40
SSW
25
SSW
25
SW
20
SW
10
WSW
15
WSW
10
SW
5
WSW
10
SW
10
E
15
NNE
10
N
10
NE
25
NNE
15
N
15
ENE
Wind State
on
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
7:46AM1.03m
8:35AM1.02m
9:17AM0.98m
9:55AM0.92m
10:26AM0.82m
00:30AM0.56m
10:47AM0.72m
00:00AM0.59m
Low Tide
4:24PM0.20m
5:00PM0.20m
5:34PM0.24m
6:03PM0.29m
6:23PM0.35m
6:25PM0.42m
3:53AM0.53m
6:01PM0.46m
rain showers
rain showers
rain showers
rain showers
light rain
light rain
part cloud
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:05
7:05
7:03
7:03
7:01
7:01
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
5:46
5:46
5:47
5:49
5:49
 mm
1
1
3
3
5
3
Temp °C
15
16
15
15
10
12
14
15
15
15
15
16
14
14
14
14
15
15
17
18
17
Feels °C
9
11
9
5
0
4
7
9
10
13
12
14
13
11
12
11
12
13
13
14
15
  • 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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