Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 pm 21 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 21 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 8AM (local time) - 18ft (5.5m), 19s period, WSW swell with onshore winds.
  • Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 18ft (5.5m), 19s period, WSW swell with 21,773 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 8PM (local time) - 11ft (3.5m), 14s 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 8PM. The primary swell is predicted to be 3.5m and 14s period with a secondary swell of 1.5m and 19s. 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 5.5m 19s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be 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 8PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Fri 21st Aug)11ft (3.5m) 14s
Best Surf 8AM (Wed 26th Aug)18ft (5.5m) 19s
Most Powerful 8AM (Wed 26th Aug)18ft (5.5m) 19s

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


The Lowdown

Alright folks, Rusty here, and I’ve been staring at the charts for Cobblestones, and let me tell you, this is a wild ride. We’re looking at a solid, consistent run of solid groundswell, but Mother Nature is going to throw a lot of wind at us before we cash in on the really good stuff. The water’s sitting at 66°, which is a touch warmer than normal for this time of year, so you might not need the thickest rubber just yet.

The story starts on Friday, August 21st, with a 12ft SW groundswell at 14 seconds, but the cross-on SSW wind at 15 km/h is making it fairly choppy. The combined energy is massive at 5915, so there’s plenty of water moving, but it’s a messy one. The next few days through Saturday and Sunday, August 22nd and 23rd, are a write-off with poor to marginal conditions and moderate to fresh cross-onshore winds. We’ve got a solid gap in the quality here.

Things start to look a little more promising on Monday, August 24th, with a 10ft SW groundswell. The morning has a clean cross-shore from the NNW, but it’s still a bit lumpy. The real standout doesn’t come until Wednesday, August 26th. That morning, we’re looking at an 18ft long-period WSW groundswell at 18 seconds, and the wind is actually offshore from the WSW at 30 km/h. This is a huge, powerful swell. The combined energy reading is 19633! But honestly, this is a serious beast. At 18ft, this is expert territory only at Cobblestones. The afternoon is still big and lumpy, and the next few days are a mix of marginal and poor conditions as the swell eases.

Now, for the real highlight. Look at Friday, August 28th, in the morning. A 7ft WSW groundswell at 12 seconds, combined with a light offshore ESE breeze at just 5 km/h. The report says it’s clean and excellent for experienced surfers. This is the window to get a good one. The energy is still a solid 1597. Then, on Saturday, August 29th, the afternoon session is golden: an 8ft SW groundswell at 16 seconds with a clean cross-offshore breeze from the north at 15 km/h. This is another excellent window for the experienced crew.

The next big standout is a long way off, but it’s a cracker. On Friday, September 5th, in the afternoon, we’re looking at a 16ft WSW groundswell at 16 seconds, with a super light cross-offshore ESE breeze at 5 km/h. The combined energy is a massive 12150, and the report calls it exceptional for experts. This is a huge, clean swell, and it’s the pick of the whole 16-day run. Keep your eyes on that one.

The bottom line: It’s a lot of big, powerful swell, but the wind is often a problem. The two best bets for clean, quality waves are Friday morning, August 28th, and especially the afternoon of Saturday, August 29th. For the big, deep-water crew, the afternoon of September 5th is a serious, long-range prospect. Crowds are possible at Cobblestones, so keep that in mind.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun morning. Very mild (max 16°C on Fri afternoon, min 12°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 23mm), heaviest during Tue night. Very mild (max 17°C on Tue morning, min 13°C on Tue night). Mainly strong winds.

Fri
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
6
0
0
1
1
2
5
4
0
0
2
0
0
!
!
0
0
3
4
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
14
3
SW
14
3
SW
16
2.5
SW
16
2.2
SW
14
2.5
SW
13
2.5
SW
13
3.5
SW
15
3
SW
13
2.5
SW
13
2.2
WSW
12
3
WSW
14
3
WSW
14
4.5
WSW
15
5.5
WSW
18
5.5
WSW
17
4.5
WSW
16
3.5
SW
14
3.5
SW
14
2.5
SW
13
Wave Graph
Metric surfscale
Energy kJ
4654
3195
4301
3283
1891
2318
2174
4786
3045
2241
1388
3714
3148
7733
19633
16155
9690
5700
4527
2528
Wind (km/h)
15
SSW
15
SE
25
SSW
25
S
15
SSW
20
SSW
20
SSW
0
SW
15
NNW
20
NW
25
NW
30
NNW
35
NNW
35
WSW
30
WSW
30
SSW
25
SSW
25
SSW
25
S
15
ESE
Wind State
cross-on
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross
cross-on
cross-on
cross
cross
on
on
cross-on
cross-on
cross-on
cross
cross-off
High Tide
3:39AM0.84m
5:28AM0.87m
6:35AM0.90m
7:24AM0.91m
8:07AM0.91m
8:49AM0.90m
11:28PM0.59m
Low Tide
3:41PM0.29m
3:54PM0.28m
4:05PM0.29m
4:17PM0.29m
4:29PM0.31m
4:41PM0.32m
4:53PM0.34m
2:29AM0.56m
clear
clear
part cloud
part cloud
part cloud
rain showers
clear
part cloud
clear
clear
part cloud
cloud
light rain
rain showers
light rain
rain showers
rain showers
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:50
6:48
6:48
6:47
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:53
5:53
5:54
5:55
5:55
5:57
5:58
 mm
1
1
14
3
3
2
Temp °C
16
15
15
15
14
14
13
13
14
15
16
17
17
17
14
14
14
14
14
14
Feels °C
14
12
11
9
9
10
8
10
11
10
11
11
11
10
8
8
7
8
8
9
  • 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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