Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 am 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
19.9° C
2.4° 

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


Cobblestones surf forecast from 6 Aug 2026:

  • Best quality surf: Saturday 8 Aug, 5AM (local time) - 21ft (6.5m), 14s period, SW swell with onshore winds.
  • Most powerful swell: Tuesday 11 Aug, 5AM (local time) - 26ft (8.0m), 16s period, SW swell with 34,153 kJ wave energy.
  • Next surfable swell (1★+): Saturday 8 Aug, 5AM (local time) - 21ft (6.5m), 14s 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 Saturday (Aug 08) at 5AM. The primary swell is predicted to be 6.5m and 14s period. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Cobblestones in the next 16 days are 8.0m 16s and forecast to arrive on Tuesday (Aug 11) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 8th Aug)21ft (6.5m) 14s
Best Surf 5AM (Sat 8th Aug)21ft (6.5m) 14s
Most Powerful 5AM (Tue 11th Aug)26ft (8.0m) 16s

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


The Lowdown

Alright folks, Rusty here. We’ve got a big run of solid, heavy south swell hitting Cobblestones, but it’s going to be a battle with the wind for most of it. This is a hardcore advanced reef break, and for the first week, it’s mostly going to be raw, powerful, and messy. Let’s get into it.

The week starts Friday, August 7th with a serious pulse of SW groundswell. We’re talking 13 ft to 15 ft of swell with a very long period of 15 seconds, and the combined energy is massive (7932). But the wind is a fresh to strong cross-onshore, so the ocean is going to be lumpy and blown out. The water is 68°, which is much warmer than normal for this time of year, but that’s the only comfort. This is more of a look-and-see day than a paddle-out.

Saturday, August 8th, the swell jacks up even bigger. The morning sees 21 ft and the afternoon hits 23 ft from the SW with periods hitting 16 seconds. The combined energy is off the charts (19056 and 24772). The forecast says wind and tide are favorable, but honestly, that size at a reef like Cobblestones is for absolute experts only. For anyone else, it’s a day to watch from the cliff.

Sunday the 9th through Thursday the 13th, the swell drops back to a still-considerable 15 ft to 18 ft, but the wind remains onshore or cross-onshore, and the conditions are poor. There’s a lot of energy (9954 to 12871) but it’s all wind-affected. It’s a tough stretch.

Now, we start seeing a light at the tunnel. Thursday afternoon, August 13th, the wind swings onshore but is lighter, and the period stretches to 17 seconds. The waves are still 15 ft but the conditions are more marginal than terrible. Friday, August 14th, we get our first real taste of clean surf. The swell drops to 11 ft with a moderate breeze from the N, giving us a clean, cross-offshore wind. It’s still a powerful SW groundswell, but the shape should be there. It’s a solid, if not epic, day.

The standout, and the one to circle on your calendar, is Saturday, August 22nd. After a couple of weeks of wind and wild surf, the stars finally align. We’ve got a clean 13 ft SW groundswell with a 16-second period, and the wind goes offshore from the E. The combined energy is strong (7549 to 11631). The forecast calls for exceptional surf conditions for expert surfers. This is the day. The sets will be clean, the lines will hold up, and the reef will be firing. Expect crowds to be possible at this spot because everyone will know it’s on. If you can handle the size and the power, this is the session of the forecast period.

Before that, there are a few other promising windows. Monday and Tuesday, August 17th and 18th, offer 16 ft waves with a clean cross-offshore wind from the N. The swell direction is a little more westerly, but the conditions will be clean. It’s a strong second option.

The very end of the period, Friday August 21st and into Saturday August 22nd, sees the wind staying clean from the SE and E, with the swell holding at 13 ft to 15 ft. This whole run from the 21st into the 22nd looks like the best consistency and quality we’re going to see. The long-range outlook for the 22nd is promising but less certain, so keep an eye on it.

So, the bottom line: the first week is for the hardcore only, with big, messy surf. The second week cleans up, and Saturday, August 22nd is the clear standout for a top-quality session at Cobblestones.

Stay safe out there.

Rusty

Short Range Forecast

Moderate rain (total 19mm), heaviest on Fri night. Very mild (max 16°C on Sun morning, min 10°C on Fri night). Winds decreasing (near gales from the WSW on Fri night, moderate winds from the WSW by Sun afternoon).

Days 4-6 Weather Summary

Heavy rain (total 24mm), heaviest during Mon morning. Very mild (max 16°C on Tue night, min 9°C on Mon afternoon). Winds decreasing (near gales from the SW on Mon afternoon, light winds from the SW by Wed morning).

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
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
0
0
!
!
!
!
6
0
0
5
7
8
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
15
4
WSW
15
6.5
WSW
13
6.5
SW
15
7
SW
16
6.5
SW
16
5
SW
16
4.5
SW
16
4
SW
14
5.5
WSW
11
6.5
SW
12
8
SW
16
7.5
SW
16
6.5
SW
16
5.5
SW
16
5
SW
15
4.5
SW
15
4.5
SW
15
4.5
SW
15
4.5
SW
17
4.5
SW
16
Wave Graph
Metric surfscale
Energy kJ
7932
7394
14363
19056
24772
21209
13045
9954
6415
7026
12871
31371
28566
21982
15084
10273
8882
7557
7795
11754
10341
Wind (km/h)
30
W
40
W
55
SW
45
SW
40
SSW
30
SW
25
SW
25
W
40
WNW
50
WSW
50
SW
50
SSW
40
SSW
35
SW
25
SW
20
SW
20
WSW
25
WSW
20
WSW
15
W
10
WNW
Wind State
cross-on
cross-on
on
cross-on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
cross-on
High Tide
5:45AM0.95m
6:51AM1.00m
7:46AM1.03m
8:35AM1.02m
9:17AM0.98m
9:55AM0.92m
Low Tide
3:09PM0.28m
3:46PM0.22m
4:24PM0.20m
5:00PM0.20m
5:34PM0.24m
6:03PM0.29m
6:23PM0.35m
part cloud
cloud
mod rain
rain showers
light rain
light rain
rain showers
cloud
rain showers
thunderstorm
light rain
mod rain
part cloud
part cloud
rain showers
part cloud
cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:07
7:05
7:05
7:03
7:03
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:44
5:45
5:45
5:45
5:46
5:46
5:47
 mm
7
4
2
1
1
4
12
3
7
2
Temp °C
14
15
14
11
11
15
16
16
16
15
10
11
14
15
16
15
16
16
16
15
16
Feels °C
7
7
5
0
1
9
11
11
10
5
-1
0
5
7
10
10
12
12
11
11
12
  • 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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