Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.8°C
1.5° 

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


Cobblestones surf forecast from 26 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 2AM (local time) - 10ft (3.0m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 26 Aug, 5PM (local time) - 16ft (5.0m), 17s period, WSW swell with 14,299 kJ wave energy.
  • Next surfable swell (1★+): Saturday 29 Aug, 2PM (local time) - 8ft (2.5m), 17s 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 29) at 2PM. The primary swell is predicted to be 2.5m and 17s period with a secondary swell of 0.6m and 6s. The wind is predicted to be 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 Wednesday (Aug 26) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 27) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Sat 29th Aug)8ft (2.5m) 17s
Best Surf 2AM (Sun 30th Aug)10ft (3.0m) 19s
Most Powerful 5PM (Wed 26th Aug)16ft (5.0m) 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 cookin’ at Cobblestones.

We’ve got a solid run of swell on the way, but it’s gonna be a bit of a mixed bag with the wind. The water is sitting at 66°, which is a touch warmer than normal for this time of year – not a bad thing, just something to note. The real story here is the size, and it’s going to get big, like proper big, so know your limits.

The first solid window kicks off Wednesday morning, August 26th. It’s big right out of the gate with a 16ft swell from the WSW, but the wind is cross-on from the SSW at 12 mph, making it choppy and poor. Not the one. The afternoon cleans up a little, still 16ft but the wind goes cross, and the energy is massive (14,299). It’s still a bit of a battle, but the potential is there for a hollow wave if you’re an expert.

Thursday, August 27th, the swell drops a touch, but we’re still dealing with a fresh 19 mph cross-breeze. The morning has 13ft, the afternoon 12ft, but it’s lumpy and cross-chop. Not great.

Friday, August 28th, the morning is the first real glimpse of clean conditions. The swell drops to 7ft from the SW with a 12-second period, and a cross-offshore breeze from the SE at 16 mph. The energy is moderate (1,328). It’s a lot smaller, but the surface is clean. The afternoon gets messy again.

The standout of the first week has to be Saturday, August 29th afternoon. The wind swings offshore from the E at 9 mph, with a 10ft SW swell at a long 17 seconds. The energy is strong (5,283), and the conditions are described as "exceptional for expert surfers." This is a proper groundswell with a long period, so it’s gonna reel down the point with plenty of power. This is the one to circle on the calendar for anyone who can handle it. Sunday morning, August 30th, is also a very good runner-up, with a 10ft SW swell, clean conditions, and a similar energy (6,179).

After that, the wind turns onshore again, and the surf gets messy through Monday and Tuesday, with the swell still hanging around 8ft to 12ft but choppy. Wednesday, September 2nd, is a write-off with strong onshore winds.

The middle of the week, September 3rd and 4th, gets interesting but dangerous. The swell jumps again – Thursday, September 3rd, has a 10ft to 12ft SW swell, but it’s howling onshore. Friday, September 4th morning, the swell is a massive 15ft from the SW, and the wind is light cross-on. The energy is enormous (15,030), but the forecast literally says it’s "too big for this break." This is expert-only territory, if even that.

The weekend of September 6th and 7th sees a drop in wind, but the swell is still pumping. Monday, September 7th morning is a real sleeper – 13ft SW swell with a very long 17-second period, and the wind is practically glassy from the S at 3 mph. The energy is massive (8,744). This could be a dream session with that perfect offshore texture, but it’s a long way out, so keep an eye on it.

The final call is Tuesday, September 8th morning. Another 15ft swell from the WSW, cross-offshore wind from the N at 12 mph, and clean conditions. The energy is huge (9,281). This is another potential standout for the second week, but with that much energy and a 16-second period, it’s for the experienced crew only.

The last few days, September 9th and 10th, are messy again with onshore winds and a 20ft monster on the Wednesday that’s too big, followed by a 13ft day on Thursday with a light cross-breeze that could be okay.

Overall, the best bet is Saturday afternoon, August 29th, and keep a close watch on Monday morning, September 7th. It’s a big swell window, so be smart out there.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Wed morning. Very mild (max 17°C on Fri afternoon, min 10°C on Thu night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Mon night. Warm (max 20°C on Sat afternoon, min 12°C on Sat morning). Winds increasing (light winds from the E on Sat afternoon, fresh winds from the SSE by Mon night).

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
7
7
5
2
3
2
1
3
4
6
8
7
4
2
3
0
4
3
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
5
WSW
18
5
WSW
17
4.5
WSW
16
4
SW
15
3.5
SW
14
2.5
SW
13
2.1
SW
12
1.7
SW
12
1.4
SW
11
2.2
SW
16
3
SW
17
3
SW
19
3
SW
17
3
WSW
16
2.5
WSW
16
2.5
WSW
17
3.5
WSW
16
3
WSW
16
2.5
WSW
15
2.5
SW
14
2.5
SW
14
Wave Graph
Metric surfscale
Energy kJ
14437
14299
10256
7031
4370
2176
1264
822
506
2325
5283
7034
6179
4678
3460
4002
5087
3968
3241
2626
2368
Wind (km/h)
20
SSW
25
SSE
25
SSE
30
SSE
30
SSE
25
SE
25
SE
30
SSE
25
SE
20
E
15
E
15
E
15
NNE
15
NNW
20
W
15
WNW
20
S
20
SE
15
SSE
20
S
15
SW
Wind State
cross-on
cross
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
off
cross-off
cross-off
cross
cross-on
cross-on
cross-on
cross-off
cross
cross
on
High Tide
8:07AM0.91m
8:49AM0.90m
11:28PM0.59m
9:30AM0.85m
11:07PM0.60m
10:11AM0.79m
11:06PM0.63m
10:54AM0.71m
11:15PM0.67m
11:39AM0.61m
11:33PM0.73m
12:35PM0.51m
11:57PM0.78m
Low Tide
4:41PM0.32m
4:53PM0.34m
2:29AM0.56m
5:05PM0.37m
3:35AM0.51m
5:13PM0.41m
4:35AM0.46m
5:13PM0.46m
5:41AM0.44m
4:55PM0.49m
7:07AM0.42m
3:46PM0.49m
rain showers
light rain
light rain
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:45
6:43
6:43
6:41
6:39
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:57
5:58
5:58
5:59
6:00
6:00
6:00
 mm
1
1
3
1
3
Temp °C
15
13
14
14
15
14
14
17
12
16
20
16
17
18
17
17
17
13
14
15
13
Feels °C
11
9
10
8
8
8
8
11
6
13
19
14
15
16
16
14
14
8
9
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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