Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 pm 13 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 13 Aug 2026:

  • Best quality surf: Monday 17 Aug, 11AM (local time) - 13ft (4.0m), 17s period, WSW swell with cross-shore winds.
  • Most powerful swell: Thursday 20 Aug, 11AM (local time) - 16ft (5.0m), 17s period, WSW swell with 13,016 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 11PM (local time) - 13ft (4.0m), 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 Thursday (Aug 13) at 11PM. The primary swell is predicted to be 4.0m and 16s period. The wind is predicted to be cross-offshore 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 Thursday (Aug 20) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Aug 16) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 13th Aug)13ft (4.0m) 16s
Best Surf11AM (Mon 17th Aug)13ft (4.0m) 17s
Most Powerful11AM (Thu 20th Aug)16ft (5.0m) 17s

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


The Lowdown

Alright, Rusty here, lookin' at the charts for the next couple of weeks.

Right off the bat, we’ve got some serious size on the way. The first real action hits Thursday afternoon, the 13th of August, out at Cobblestones. This is an advanced reef break, and it's exposed, so it lights up with the right direction. The water's feelin' a touch warmer than usual for this time of year, about 67°, which is a nice bonus.

Thursday afternoon sees a solid 13 ft of SW swell, but the wind is a cross-on from the SSW. It's cleanable, but not perfect. The energy is massive – we're talking nearly ten thousand (9736) units of juice. This is serious ocean. Friday the 14th is the real standout. Get up early. A light NNE breeze will have it glassy and clean, with 12 ft of that long-period SW groundswell at 16 seconds. The energy drops a bit (6148) but that's still a lot of water moving. This is for the experts only; this spot is listed as "advanced" and it will be just that.

By Saturday the 15th, it drops a touch to 8 ft SW, but the wind holds clean with that cross-off from the NNE. It’s still a bit much for anyone but experienced surfers. The combined energy is still over two thousand (2725).

Sunday the 16th keeps the size around 10 ft from the WSW, but now we've got a moderate breeze from the NNE, still cross-off, so it stays clean, but the wind is cranking at 16 mph. Still a big, powerful ocean (4127 energy units).

Then things get wild. Monday the 17th is a beast. Monday morning we get a 13 ft WSW swell at 17 seconds with a near-gale cross-shore wind at 31 mph. The energy reading is off the hook at 17,067. This is big, dangerous, and honestly, more of a kite-surfing day unless you're a madman. Monday afternoon it goes onshore at 28 mph with 15 ft, which is just poor.

Tuesday the 18th is still over 16 ft (WSW) in the morning, with a gentle onshore breeze. The energy is still massive (12,064). This is expert-only territory, and the wind isn't doing us any favors.

Wednesday the 19th is a write-off with strong onshore winds and poor conditions. Thursday the 20th dips a little, but we're back to a 16 ft WSW swell with a gentle cross-on breeze. The energy is huge again (13,016). It's marginal, but for the absolute best, there could be a window.

The second week, from the 21st to the 28th, is a mess of onshore winds and blown-out conditions. The swell stays solid – often 13 ft to 16 ft – but the wind is from the west or WSW, killing it for the paddle crew. There is a promising window on Sunday the 23rd afternoon with a 15 ft SW swell and a clean cross-off breeze from the north. That's a potential last-gasp moment for experienced surfers. After that, it's mostly onshore slop and huge westerly wind until we get a little window on the 27th morning, but the wind is howling again.

Honestly, for the whole run, it's big, powerful, and dangerous. There's no beginner-friendly water here. The best of the best is Friday morning the 14th of August and maybe the 23rd afternoon. If you're not an expert, give this one a miss.

- Rusty

Short Range Forecast

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

Days 5-7 Weather Summary

Moderate rain (total 15mm), heaviest on Mon afternoon. Very mild (max 18°C on Sun afternoon, min 12°C on Mon night). Winds decreasing (strong winds from the W on Mon afternoon, light winds from the SW by Tue morning).

Thu
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
7
8
7
4
5
3
4
5
3
4
4
!
0
0
7
6
0
0
0
6
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
17
4
SW
16
3.5
SW
16
3.5
SW
15
3
SW
14
2.5
SW
14
2.5
SW
13
2.2
WSW
13
3
WSW
14
3
WSW
14
3
WSW
15
4
WSW
17
4.5
WSW
17
5
WSW
15
5
WSW
16
4.5
WSW
16
4
WSW
15
3.5
WSW
15
4.5
WSW
15
4.5
WSW
16
Wave Graph
Metric surfscale
Energy kJ
9736
7675
6148
4699
3810
2725
2209
1657
4040
3501
3393
8846
12608
10768
10927
10186
6566
4522
7757
10010
Wind (km/h)
10
SSW
15
ESE
10
NNE
5
NW
10
NE
20
NNE
15
N
10
NE
25
NNE
25
N
20
N
50
NW
45
WSW
35
SW
15
SW
20
WNW
40
NW
35
WNW
25
WSW
20
WSW
Wind State
cross-on
cross-off
cross-off
cross
off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross
on
on
on
cross-on
cross-on
cross-on
on
on
High Tide
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
1:15AM0.78m
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
3:25PM0.34m
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
rain showers
light rain
rain showers
cloud
cloud
rain showers
light rain
light rain
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
6:58
6:58
6:56
6:56
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:47
5:49
5:49
5:50
5:51
5:52
5:52
 mm
3
5
2
2
3
2
Temp °C
14
14
14
16
15
16
17
17
17
18
18
18
14
14
13
14
15
16
15
14
Feels °C
12
11
11
13
14
12
13
16
12
12
14
12
4
4
7
9
8
8
9
9
  • 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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