Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 pm 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.1°C
1.1° 

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


Cobblestones surf forecast from 10 Sep 2026:

  • Best quality surf: Monday 14 Sep, 11AM (local time) - 13ft (4.0m), 14s period, SW swell with offshore winds.
  • Most powerful swell: Saturday 12 Sep, 5AM (local time) - 13ft (4.0m), 16s period, WSW swell with 8,438 kJ wave energy.
  • Next surfable swell (1★+): Thursday 10 Sep, 11PM (local time) - 7ft (2.1m), 16s 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 Thursday (Sep 10) at 11PM. The primary swell is predicted to be 2.1m and 16s period with a secondary swell of 0.7m and 21s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cobblestones in the next 16 days are 4.0m 16s and forecast to arrive on Saturday (Sep 12) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Sep 11) at 11AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 10th Sep)7ft (2.1m) 16s
Best Surf11AM (Mon 14th Sep)13ft (4.0m) 14s
Most Powerful 5AM (Sat 12th Sep)13ft (4.0m) 16s

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


The Lowdown

Alright folks, Rusty here. I’ve been staring at the charts for this zone and it’s a bit of a mixed bag for the next 16 days. We’ve got some serious size coming through at times, but the wind is going to be the main character, and not always in a good way.

The first few days are a write-off for decent waves. Friday the 11th and Saturday the 12th have serious swell, but the wind is howling onshore or cross-shore, making it a messy, choppy mess. Sunday the 13th is the same story – big, raw, and ugly. If you’re looking for a decent paddle, you’ll have to wait until Monday the 14th.

The standout window starts on Monday morning, September 14th. We’ve got a solid 13ft groundswell out of the SW, with a very long period of 14 seconds. The wind is a clean offshore breeze from the East, which is a massive plus. This is going to be a powerful, heavy wave at Cobblestones, and with combined energy hitting 5794, it’s a serious amount of water moving around. This is strictly for experts. It’s got a lot of energy and the tide will be a factor, so you need to know what you’re doing. The water temps are pretty standard for this time of year, nothing unusual there.

After that, Tuesday the 15th morning is another gem. The swell drops slightly to 12ft from the SW, but the wind goes glassy. It’s going to be a clean, smooth morning session. The energy is still very high (4375), so it’s still a big wave day for experienced surfers. The afternoon will get choppy again as the wind picks up.

The middle of the week (Wednesday 16th and Thursday 17th) drops off significantly in size, with the wind switching around and making it marginal. It’s not worth the effort.

Now, hold on to your boardies, because the second week looks like it could be the real deal. The 20th of September sees a new pulse of SW swell arriving, building to 13ft by Sunday afternoon. The wind is a cross-onshore, which is a bit of a bummer, but the energy is massive (7245). It’s going to be a bit lumpy, but there will be some bombs.

The absolute standout, however, is looking like Monday the 21st and Tuesday the 22nd. The swell is going to peak at a pumping 16ft from the SW on Monday, with a period of 14 seconds. The combined energy is off the charts at 9969. That’s a lot of power. Early on Monday the wind is light onshore, but by Tuesday the 22nd it swings to a cross-offshore SE breeze, cleaning it right up. This is a massive, powerful swell for experts only. At 16ft, this is not for the faint of heart.

The energy remains strong through the 24th and 25th, with clean conditions and a solid 10ft groundswell on offer. That Friday the 25th morning with light offshore winds looks like a proper session for those who can handle the size.

Overall, this is a period of real extremes. The first week has a couple of excellent days for experts, but the second week, starting around the 20th, has the potential to be truly epic for the big-wave crew. Stick with the morning sessions when the wind is best.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 15°C on Thu night). Winds increasing (light winds from the ESE on Thu night, strong winds from the WNW by Fri night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 21°C on Wed morning, min 11°C on Mon night). Wind will be generally light.

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
3
0
0
0
0
0
0
5
6
0
4
5
2
4
3
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
WSW
15
2.1
WSW
16
3
WSW
18
3.5
W
17
2.5
WSW
16
3.5
WSW
15
3
WSW
14
3
WSW
13
4
WSW
15
4
WSW
14
4
SW
14
3.5
SW
14
3.5
SW
14
3.5
SW
14
3
SW
14
2.5
SW
14
2.4
SW
16
2.3
SW
14
1.9
WSW
14
Wave Graph
Metric surfscale
Energy kJ
2070
2172
4724
6640
3211
5138
3278
2993
5987
5573
5794
5472
4912
4375
3725
2392
2796
2155
1310
Wind (km/h)
20
NE
35
NNE
30
N
45
WNW
25
WSW
25
W
25
WNW
25
WNW
20
W
15
SSE
15
E
25
S
25
E
5
S
25
S
10
NE
15
NNE
15
NNW
20
NNW
Wind State
off
cross-off
cross-off
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross
off
cross-on
cross-off
glassy
cross
off
cross-off
cross
cross
High Tide
10:58PM0.54m
10:08AM0.69m
10:34PM0.56m
10:39AM0.60m
10:24PM0.61m
11:00AM0.51m
10:28PM0.67m
10:57AM0.43m
10:43PM0.72m
9:41AM0.38m
11:04PM0.76m
11:28PM0.79m
Low Tide
3:34AM0.45m
4:57PM0.40m
4:22AM0.40m
4:28PM0.44m
5:12AM0.37m
3:38PM0.43m
6:09AM0.37m
2:41PM0.40m
7:39AM0.38m
2:06PM0.35m
2:02PM0.31m
part cloud
part cloud
cloud
rain showers
clear
clear
part cloud
cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:24
6:22
6:22
6:20
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:07
6:07
6:08
6:09
6:10
6:10
 mm
4
Temp °C
16
17
18
18
15
16
16
17
17
17
16
18
15
19
19
19
21
21
18
Feels °C
13
11
13
12
8
11
11
12
12
14
14
17
11
19
15
19
19
19
18
  • 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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