Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 7 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.9° 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 20 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 8AM (local time) - 16ft (5.0m), 19s period, WSW swell with cross-shore winds.
  • Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 16ft (5.0m), 19s period, WSW swell with 18,956 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 2AM (local time) - 13ft (4.0m), 15s 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 Friday (Aug 21) at 2AM. The primary swell is predicted to be 4.0m and 15s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Cobblestones in the next 16 days are 5.0m 19s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Tuesday (Aug 25) at 8AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Fri 21st Aug)13ft (4.0m) 15s
Best Surf 8AM (Wed 26th Aug)16ft (5.0m) 19s
Most Powerful 8AM (Wed 26th Aug)16ft (5.0m) 19s

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


The Lowdown

G’day, Rusty here. Looks like we’ve got a solid run of swell heading our way, but the wind’s gonna be a bit of a handful for most of it. The real window of clean, lined-up waves is narrow, so you’ll want to pick your moments carefully.

The first call is for Cobblestones on Thursday afternoon, August 20th. There’s a hefty 13ft SW groundswell rolling in, with a long 16-second period, so those sets will have serious push. The combined energy is pumping at 7196, but the wind is a cross-on 9 mph from the SW, making it choppy. The water is sitting at 66°, which is a touch warmer than normal for this time of year. This one’s for advanced crew only—no beginners out there.

Friday morning, August 21st, is where it gets good. The swell drops slightly to 12ft, still from the SW with a 14-second period, but the wind goes glassy—3 mph from the SSE. That’s clean, lined-up surf for the experts. The energy is still strong at 5427. This is your standout: the best balance of size and clean conditions on offer. Friday afternoon sees the wind swing back cross-on, adding ripples, so get it early.

Saturday, August 22nd and Sunday, August 23rd are a write-off for quality—the wind is up to 16 mph, choppy and messy. The swell stays around 8ft to 10ft, but the cross-on wind wrecks it. By Monday, August 24th, the wind lightens to a cross-shore 6 mph from the NNW, with 10ft SW swell and 13-second period, but the comment says it’s marginal. Not worth paddling out for.

Then we hit a big gap of poor conditions. From Tuesday, August 25th through to Thursday, August 27th, the wind is moderate to fresh, cross-shore or cross-on, with swell pumping up to 18ft on Wednesday, August 26th. That’s a massive 18ft WSW swell, with 18-second period and energy hitting 19568—but the wind is 12-19 mph, cross-on or cross, and the comment says it’s too big for this break. Kite surfers might be eyeing it off, but for paddle surfing, it’s a no-go.

Friday, August 28th offers a slight reprieve—cross-off wind from the SE at 12 mph, with 10ft SW swell and 12-second period. The energy is down to 2640, and it’s clean, but the comment says marginal. Worth a look if you’re desperate.

Saturday, August 29th is the second standout. Morning sees 5ft swell from the WSW, 12-second period, with a light 6 mph NNE cross-off wind. Clean conditions, and the comment says excellent for experienced surfers. Energy is 1180. This is a smaller, cleaner, more manageable option for those who can’t handle the big stuff.

After that, the outlook gets mixed. Sunday, August 30th has 8ft WSW swell with a long 19-second period, but 16 mph cross wind. Monday, August 31st sees 15ft WSW swell return, with 15-16 second period and gentle cross-on wind—marginal but possibly rideable with the right tide. From Tuesday, September 1st onward, the wind is onshore or cross-on, 12-16 mph, with swell holding around 12ft to 15ft. The comment says poor or marginal. Not looking good for the second week overall.

Bottom line: Friday morning August 21st is your best bet for big, clean waves. Saturday morning August 29th is the smaller, cleaner backup. The rest is choppy or blown out.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Thu night, min 12°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 11mm), heaviest on Tue night. Very mild (max 17°C on Tue night, min 11°C on Sun night). Winds increasing (light winds from the ESE on Sun night, fresh winds from the NW by Tue night).

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
7
6
4
6
2
0
1
0
0
6
5
3
2
1
2
4
!
!
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
15
3.5
SW
14
3.5
SW
14
3
SW
14
3
SW
16
2.5
SW
16
2.2
SW
14
3
SW
13
3
SW
13
3.5
SW
15
3
SW
13
2.5
SW
13
2.2
SW
12
2.2
WSW
12
3
WSW
14
4
WSW
15
5
WSW
18
5
WSW
17
5
SW
16
Wave Graph
Metric surfscale
Energy kJ
6375
5285
4654
3056
4301
3439
1891
2574
2641
5785
3341
2310
1486
1297
3875
6716
17607
15328
11570
Wind (km/h)
5
SSW
0
N
15
SSW
15
SE
20
SSW
20
SSW
20
S
25
SSW
25
S
10
ESE
10
N
15
NNW
20
NNW
30
NW
25
NW
20
SW
10
S
15
SSW
25
SSE
Wind State
glassy
glassy
cross-on
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross
cross
cross
cross
on
cross
cross-on
cross
High Tide
2:08AM0.81m
3:39AM0.84m
5:28AM0.87m
6:35AM0.90m
7:24AM0.91m
8:07AM0.91m
Low Tide
3:41PM0.29m
3:54PM0.28m
4:05PM0.29m
4:17PM0.29m
4:29PM0.31m
4:41PM0.32m
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
mod rain
light rain
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:50
6:48
6:48
6:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:53
5:53
5:54
5:55
5:55
5:57
 mm
8
1
2
1
Temp °C
16
15
15
14
15
15
15
14
14
13
13
13
16
16
16
17
14
14
13
Feels °C
14
14
12
11
12
10
11
9
9
9
11
10
11
10
10
11
10
10
8
  • 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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