Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.2°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 7 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 5PM (local time) - 13ft (4.0m), 16s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 13ft (4.0m), 16s period, SW swell with 8,888 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 5PM (local time) - 13ft (4.0m), 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 Tuesday (Sep 08) at 5PM. The primary swell is predicted to be 4.0m 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 4.0m 16s and forecast to arrive on Tuesday (Sep 08) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Sep 08) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 8th Sep)13ft (4.0m) 16s
Best Surf 5PM (Tue 8th Sep)13ft (4.0m) 16s
Most Powerful11AM (Tue 8th Sep)13ft (4.0m) 16s

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


The Lowdown

Alright, Rusty here, let's take a look at what's brewing.

We got a solid run of swell coming in, but it ain't all perfect. The first few days are the real standouts, with some serious groundswell and clean conditions, but it's for the experienced crew only, especially at Cobblestones. This is a reef break, for advanced surfers, so keep that in mind. The water's sitting at about 65°, which is a touch warmer than usual for this time of year.

We start off on Tuesday the 8th of September with a meaty 13ft SW groundswell, with a period of 16 seconds. That's a long-period groundswell, and with a combined energy of 8888, there's a ton of power in the water. The wind's cross-off from the ESE at 12 mph, keeping it clean. It's a bit of a beast, and the forecast mentions questionable tides, but for an expert, this is the pick of the whole run. The afternoon cleans up even more with a lighter sea breeze.

Wednesday the 9th holds onto that 10ft SW swll with a 15-second period. The morning has a solid offshore breeze from the ENE at 16 mph, which is going to groom it nicely. The combined energy is still massive at 4187. It's still excellent for experienced surfers.

Thursday the 10th sees the swll drop to 7ft, but it's still a clean SW groundswell with a 14-second period. The wind goes offshore from the NE at 12 mph in the morning. Then, Thursday afternoon is a real beauty: the wind goes glassy from the NNW at 3 mph. That's a major positive for clean conditions.

Friday the 11th has a 7ft WSW groundswell in the morning with a 16-second period and a cross-off wind from the N. The afternoon, though, is a bit of a trap. The swll kicks back up to 10ft with a very long 18-second period, but the wind goes cross-shore, and the forecast flags some questionable tide conditions. That long period at a beach/reef setup can make it break a bit straight.

From Saturday the 12th through to the end of the week, things go pretty average. The wind turns onshore and lumpy, so it's not a great time to be out. Sunday the 13th afternoon gets messy with rain showers and onshore wind, though there's still a lot of swll.

There's a bit of a window on Monday the 14th of September. The morning has an 12ft WSW swll with a 14-second period and a light cross-off breeze from the NNE. The combined energy is 4510, but it's another one for the experienced crew.

The rest of the run from Tuesday the 15th right through to the 23rd is mostly blown out or has messy conditions. The winds are often cross-on or onshore, and the swll is consistently over 8ft, which is expert territory anyway. The last few days, especially around the 20th and 21st, there's a huge amount of energy (9851 on the 20th), but with strong onshore winds, that's more of a kite-surfing scenario than a paddle one. There are a few mornings with lighter wind, like the 16th and 22nd, but the conditions are still described as marginal with a cross-on chop.

So, if you're an advanced surfer, the first few days are the ones to aim for. Tuesday the 8th and Wednesday the 9th are your best bets. After that, keep an eye on the glassy Thursday afternoon and the clean Monday morning, but don't expect perfection. It's a classic case of a big swll hanging around but the wind not playing ball for most of the second week.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Wed afternoon, min 11°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Sat morning. Very mild (max 18°C on Fri morning, min 13°C on Sun night). Winds decreasing (strong winds from the W on Sat morning, light winds from the SE by Sun night).

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
8
8
6
5
5
4
4
4
4
5
5
2
0
0
0
0
3
5
5
4
5
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
16
4
WSW
16
3.5
WSW
16
3
SW
15
3
SW
15
2.4
SW
15
2.1
SW
14
2
WSW
15
2.3
WSW
15
2.2
WSW
16
3
WSW
18
3
WSW
16
2.2
WSW
16
3
WSW
10
2.5
W
10
1.9
WSW
14
3.5
WSW
13
3.5
WSW
13
3.5
WSW
14
3.5
WSW
14
3.5
SW
15
Wave Graph
Metric surfscale
Energy kJ
8888
7354
5703
4187
3622
2525
1785
1737
2207
2355
5454
4055
2386
1654
1432
1362
4277
4158
4488
5381
5583
Wind (km/h)
20
ESE
15
SE
20
E
25
ENE
5
E
20
ENE
20
NE
5
NNW
10
E
15
N
15
NNW
30
NNW
35
W
30
W
30
W
25
W
20
WSW
10
ESE
10
NNE
10
SW
20
ESE
Wind State
cross-off
cross-off
off
off
off
off
off
glassy
off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
on
cross-off
cross-off
cross-on
cross-off
High Tide
00:50AM0.59m
8:46AM0.83m
11:34PM0.54m
9:30AM0.77m
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
Low Tide
4:26PM0.23m
1:13AM0.59m
4:50PM0.28m
2:42AM0.51m
5:02PM0.34m
3:34AM0.45m
4:57PM0.40m
4:22AM0.40m
4:28PM0.44m
5:12AM0.37m
3:38PM0.43m
6:09AM0.37m
2:41PM0.40m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
rain showers
rain showers
clear
part cloud
clear
rain showers
rain showers
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:28
6:26
6:26
6:24
6:22
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:06
6:07
6:07
6:07
6:08
6:09
 mm
2
4
1
1
Temp °C
16
19
15
15
20
19
16
19
17
18
18
17
17
17
16
17
17
16
16
17
15
Feels °C
11
14
10
10
18
16
11
17
16
16
16
16
10
10
10
12
12
14
15
15
12
  • 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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