Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.4°C
1.2° 

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


Cobblestones surf forecast from 5 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 2PM (local time) - 13ft (4.0m), 16s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 8PM (local time) - 15ft (4.5m), 17s period, SW swell with 11,855 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 11AM (local time) - 11ft (3.5m), 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 Monday (Sep 07) at 11AM. The primary swell is predicted to be 3.5m 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 4.5m 17s and forecast to arrive on Sunday (Sep 06) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Tuesday (Sep 08) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Mon 7th Sep)11ft (3.5m) 16s
Best Surf 2PM (Tue 8th Sep)13ft (4.0m) 16s
Most Powerful 8PM (Sun 6th Sep)15ft (4.5m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about what’s coming up for Cobblestones.

We’ve got a big, powerful run of south-west groundswell on the way, but the timing and the wind are going to make this a game of picking the right windows. This is an advanced reef set-up, so it’s not for the faint of heart, and with the size we’re looking at, it’s going to be exclusively for the experienced crew.

The first real action kicks off on Sunday, September 6th. The swell is already building with a 13ft to 15ft SW swell, but the wind is a messy 19 mph cross-shore from the SSE. The wave energy is already massive (6003 to 10964), but the surface is going to be lumpy and tough. Not the best start.

Monday, September 7th morning is where we get our first real standout. The wind drops to a gentle 9 mph from the SE, turning cross-offshore, and the 12ft SW swell (16-second period) cleans right up. The energy is huge (6877), and it’s exceptional for expert surfers. This is your window for a clean, powerful session.

Tuesday, September 8th keeps the goodness going. Both morning and afternoon see 13ft SW swell with a 16-second period. The morning has a moderate 16 mph cross-offshore breeze, and the afternoon drops to a gentle 9 mph. Both windows are clean, with excellent quality. The energy is still massive (8674 and 7961). This is the best combination of size and quality we’ll see.

The wind goes offshore on Wednesday, September 9th morning – a 16 mph ENE breeze – but the swell drops to 10ft. The shape is still good, but the energy is a little lower. Still a solid option for the experienced.

Thursday, September 10th sees the swell dropping to 7ft, with a 14-second period. The wind is cross-offshore, and the morning is clean, but the surf is getting smaller. A good option for a slightly less intense session.

From Friday, September 11th through to the end of the first week, things get messy. The wind swings cross-shore and onshore, and the wave quality drops. There’s a few brief windows of light wind on Monday, September 14th and Tuesday, September 15th, but the swell is still 10ft to 12ft and the wind directions aren’t ideal.

The second week is dominated by massive, dangerous swell. Thursday, September 17th has a 20ft, short-period (8 to 11 seconds) W/WSW swell with 19 mph onshore winds – that’s just a washing machine. The wave energy is massive (8650), but the conditions are poor.

Friday, September 18th is a monster. A 21ft WSW swell with a 15-second period, but the wind is 22-25 mph cross-onshore. The wave energy is astronomical (19412 and 15027). It’s too big for this break. Only the most hardcore tow-in crew might even look at it.

Sunday, September 20th is another huge day: a 21ft SW swell with a 20-second period. The energy is off the charts (33756). The wind is only moderate cross-onshore, but the sheer size will make it unmanageable for paddle surfing. This setup looks more interesting for kite surfing than paddle surfing.

Bottom line: The absolute best on offer is Tuesday, September 8th. Both the morning and afternoon sessions at Cobblestones will give you 13ft of clean, powerful SW groundswell with cross-offshore winds. It’s big, it’s consistent, and the quality is there for the experts. Monday morning is also a strong second choice. After that, it’s a mix of messy wind and dangerous, oversized swell.

Stay safe out there.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 20°C on Tue afternoon, min 10°C on Sun night). Winds decreasing (fresh winds from the S on Sat night, light winds from the SE by Tue afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 20°C on Wed afternoon, min 9°C on Wed morning). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
4
6
8
7
4
7
8
8
6
4
5
5
3
4
4
2
2
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
13
4
SW
13
4.5
SW
17
4.5
SW
17
3.5
SW
16
3.5
SW
16
4
SW
16
4
SW
16
4
SW
16
3.5
WSW
16
3
WSW
15
3
SW
15
2.5
SW
15
2.1
SW
14
2.1
SW
14
2.1
WSW
15
2
WSW
14
2.3
WSW
18
3
WSW
16
Wave Graph
Metric surfscale
Energy kJ
3185
4747
10921
9898
6877
6080
7617
8674
7961
5958
4673
4086
3045
1862
1761
1860
1579
3164
4402
Wind (km/h)
35
SSE
30
SSE
30
SSE
15
ESE
15
SE
30
SSE
25
ESE
25
ESE
15
SE
15
E
25
ENE
10
NE
20
ENE
25
NNE
15
N
15
ENE
20
NNW
25
NW
30
WSW
Wind State
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
off
cross
cross
on
High Tide
5:24AM0.86m
6:53AM0.88m
7:55AM0.87m
00:50AM0.59m
8:46AM0.83m
11:34PM0.54m
9:30AM0.77m
10:58PM0.54m
10:08AM0.69m
10:34PM0.56m
Low Tide
3:20PM0.18m
3:55PM0.19m
4:26PM0.23m
1:13AM0.59m
4:50PM0.28m
2:42AM0.51m
5:02PM0.34m
3:34AM0.45m
4:57PM0.40m
4:22AM0.40m
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:30
6:28
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:04
6:05
6:06
6:06
6:07
6:07
 mm
1
3
Temp °C
15
15
15
12
14
17
13
15
20
16
15
20
19
15
18
17
18
18
18
Feels °C
10
7
7
7
10
12
7
10
16
11
10
17
15
10
16
15
16
16
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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