Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
19.1°C
1.8° 

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


Cobblestones surf forecast from 23 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 11AM (local time) - 16ft (5.0m), 18s period, WSW swell with cross-onshore winds.
  • Most powerful swell: Wednesday 26 Aug, 11AM (local time) - 16ft (5.0m), 18s period, WSW swell with 17,010 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 11AM (local time) - 16ft (5.0m), 18s period with WSW 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 Wednesday (Aug 26) at 11AM. The primary swell is predicted to be 5.0m and 18s 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 5.0m 18s and forecast to arrive on Wednesday (Aug 26) 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 2.3m 7s period and expected on Tuesday (Aug 25) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Wed 26th Aug)16ft (5.0m) 18s
Best Surf11AM (Wed 26th Aug)16ft (5.0m) 18s
Most Powerful11AM (Wed 26th Aug)16ft (5.0m) 18s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it. We’ve got one spot on the radar for the next couple of weeks, and it’s a proper reef setup for the advanced crew only.

The forecast kicks off on Monday, 24 August, but don’t get too excited just yet. The early part of the week is a write-off. Monday morning sees a 10 ft SW swell with a moderate 13-second period, but that cross-shore wind at 9 mph is gonna mess it up, leaving a slight cross-chop. The afternoon gets worse – wind bumps up to 12 mph cross-on, dropping the swell to 8 ft, and it’s just choppy and poor. Tuesday and Wednesday are no better, with strong winds and messy conditions. Wednesday morning actually has a massive 16 ft SW swell rolling in with an 18-second period, and the combined energy is a whopping 17010 – that’s very strong, but the word is it’s just too big for this break. We’re talking expert-only territory, and even then, the cross-on wind at 12 mph makes it a no-go.

Thursday 27 August is still a bit rough, with a 13 ft SW swell and 15-second period, but the wind is cross-on and choppy. By Thursday afternoon, we get a bit of a reprieve with an 12 ft SW swell and a cross-shore wind, but it’s marginal.

The first real standout comes on Friday, 28 August, in the morning. This is the one to circle. The swell drops to 8 ft from the SW with a 12-second period, but the magic is in the wind: glassy. A slight air from the SSE at 3 mph. The combined energy is moderate at 1533, and the conditions are described as excellent for experienced surfers. It’s going to be clean, smooth, and the reef will be working. Keep in mind this is an advanced, exposed reef, and it’s consistent, so there will be waves, but it’s not for the faint-hearted.

The next real highlight is Saturday, 29 August, in the afternoon. The swell picks up to 12 ft from the SW with an 18-second period – that’s a long-period groundswell, full of energy (combined energy 6779). The wind goes cross-off from the north at 9 mph, so it’s clean. The forecast says “exceptional surf conditions for expert surfers.” This is the best of the bunch. The sets will be powerful, with long gaps between them, so paddling out should be easier. But with that size and power, it’s only for the experienced.

Moving into the next week, we have a stretch of clean mornings from Sunday 30 August through to Tuesday 1 September. Swells hang around 8 ft to 10 ft from the WSW, with periods of 15 to 17 seconds. The wind is cross-off and light, so conditions are clean. The combined energy is moderate to strong (3677 to 4303). These are solid, rideable days, but not quite the standout of Friday or Saturday.

After Tuesday 1 September, the quality drops off. The wind turns cross-on, and by Wednesday 2 September, it’s choppy and marginal. Thursday 3 September is poor, with onshore winds. There’s a gap of a few days with no real recommendations.

The next thing to watch is Friday, 4 September, in the afternoon. A 16 ft SW swell with a 16-second period rolls in, and the combined energy is a massive 13096 – very strong. The wind is a light cross-on at 9 mph, so it’s a bit bumpy, but it’s marginal. Saturday 5 September is a write-off with onshore winds.

Then, Sunday, 6 September, in the afternoon is a monster. An 18 ft WSW swell with a 14-second period, combined energy of 25436 – that’s extreme. The wind is cross-off from the SE at 19 mph, so it’s clean, but it’s too big for this break. Good for a look, not for a paddle.

Monday, 7 September, in the morning is another standout. The swell is 18 ft from the WSW, 14-second period, combined energy 12229. The wind is a gentle 9 mph from the east, cross-off, and it’s described as “exceptional surf conditions for expert surfers.” This is big, powerful, and clean. Only for the very experienced.

The water temp is about average for the time of year, nothing unusual to report.

So, keep your eyes on Friday 28 August morning for the glassy, clean conditions, and Saturday 29 August afternoon for the biggest, cleanest swell of the first week. The second week has a couple of huge, clean days, but they’re for experts only.

Rusty out.

Short Range Forecast

Moderate rain (total 15mm), heaviest on Tue afternoon. Very mild (max 17°C on Tue morning, min 14°C on Sun night). Winds increasing (light winds from the W on Mon morning, strong winds from the NW by Tue morning).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed night. Very mild (max 15°C on Sat afternoon, min 11°C on Fri morning). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
4
0
1
0
0
6
!
!
0
0
4
4
4
1
4
4
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)
3.5
SW
15
3
SW
13
2.5
SW
13
2.5
WSW
12
2.5
SW
14
3
WSW
13
4
WSW
14
5
WSW
18
5
WSW
17
4.5
WSW
16
4
SW
15
3.5
SW
14
3
SW
13
2.3
SW
12
2
SW
12
1.7
SW
11
2.5
SW
16
3.5
SW
18
3.5
SW
17
Wave Graph
Metric surfscale
Energy kJ
5187
3045
2345
2282
2633
3314
6223
17010
16085
10787
6665
5140
2870
1518
1094
688
3373
6779
7283
Wind (km/h)
10
SW
15
NW
20
NW
30
NW
40
NW
35
NW
10
W
20
SW
25
SSW
25
SSW
25
SSW
20
S
10
SE
5
SSE
15
S
15
E
20
NE
15
N
10
NE
Wind State
on
cross
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
glassy
cross-on
off
cross-off
cross-off
off
High Tide
6:35AM0.90m
7:24AM0.91m
8:07AM0.91m
8:49AM0.90m
11:28PM0.59m
9:30AM0.85m
11:07PM0.60m
10:11AM0.79m
11:06PM0.63m
Low Tide
4:17PM0.29m
4:29PM0.31m
4:41PM0.32m
4:53PM0.34m
2:29AM0.56m
5:05PM0.37m
3:35AM0.51m
5:13PM0.41m
4:35AM0.46m
part cloud
cloud
clear
part cloud
rain showers
light rain
rain showers
light rain
light rain
rain showers
light rain
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:48
6:47
6:45
6:43
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:54
5:55
5:55
5:57
5:58
5:58
5:59
 mm
1
5
6
1
2
2
1
Temp °C
15
15
15
16
17
17
17
14
15
14
13
14
13
13
14
13
12
15
15
Feels °C
12
11
10
10
11
10
12
9
10
8
7
8
8
12
11
9
8
11
13
  • 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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