Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 am 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
18.1°C
1.0° 

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


Cobblestones surf forecast from 13 Sep 2026:

  • Best quality surf: Monday 14 Sep, 2PM (local time) - 11ft (3.5m), 14s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 20 Sep, 11PM (local time) - 11ft (3.5m), 15s period, SW swell with 6,134 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 2PM (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 Monday (Sep 14) at 2PM. The primary swell is predicted to be 3.5m and 14s 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 3.5m 15s and forecast to arrive on Sunday (Sep 20) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 7s period and expected on Friday (Sep 18) at 2AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Mon 14th Sep)11ft (3.5m) 14s
Best Surf 2PM (Mon 14th Sep)11ft (3.5m) 14s
Most Powerful11PM (Sun 20th Sep)11ft (3.5m) 15s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

We’ve only got one spot on the radar for this stretch, and it’s a solid one, but it’s going to take some patience and a keen eye on the wind. Cobblestones is a reef break, advanced only, and it’s going to be serving up some serious power over the next couple of weeks. The water temp is sitting at 64.6°F, which is about 1.8°F warmer than usual for this time of year, so it’s a touch on the mild side.

The outlook starts with a bang on Monday, September 14th. We’ve got a hefty 11.5ft to 13.1ft SW groundswell rolling in with a 14-second period. The combined energy is pumping hard at 5483, so that’s some serious grunt. The wind is a cross-off from the ESE, so it’ll be clean, but the conditions are labelled as marginal, likely due to tide. This is big, powerful reef stuff, over 8.2ft, so it's strictly for the experienced crew.

Tuesday, September 15th, is the standout. The morning session is where it’s at. The swell drops a touch to 9.8ft from the SW, still a 14-second period, and we get a beautiful offshore wind from the ENE. It’s described as “excellent surf conditions for experienced surfers,” and I’m calling that the pick of the whole forecast. The energy is still massive at 4216. This is the one to point your board at. The afternoon sees the wind swing to a light cross-shore, making it less perfect but still surfable.

Wednesday the 16th sees the swell start to ease. The morning has 6.9ft SW swell with a 13-second period and a cross-off breeze. It’s cleaner in the afternoon with 5.2ft and a light cross-off, but the wind is a bit more onshore, so it’s not as crisp.

Thursday the 17th is a write-off. The wind cranks up from the NNW, hitting 18.6 mph, creating a messy cross-chop. The swell is still 4.9ft to 5.2ft, but the quality is poor, with a score of 0 for the afternoon.

Friday the 18th brings a new pulse of swell. The morning has 7.9ft WSW swell with a long 15-second period and a light cross-shore, but it’s marginal. The afternoon is a no-go with rain showers and a strong 24.9 mph southerly wind making an absolute mess of things, despite a 9.8ft, 16-second groundswell and energy of 5372.

The weekend, Saturday the 19th and Sunday the 20th, is a washout. Strong onshore winds from the west dominate, with 9.8ft to 11.5ft of SW swell. The energy is there, but the wind is howling onshore, making it unsurfable.

The start of the next week, Monday the 21st and Tuesday the 22nd, is more of the same. Westerly winds, rain, and messy conditions. The swell holds around 8.2ft to 9.8ft, but the quality is poor.

We get a slight reprieve on Wednesday the 23rd. The wind drops to almost nothing, with a light cross-on from the SW, and we have a 9.8ft SW swell with a 14-second period. It’s still marginal, but at least it’s clean-ish. The energy is still strong at 3894.

Thursday the 24th is similar, with light winds and 9.8ft SW swell, but the wind is onshore, so it’s not great.

Now, look ahead to Friday the 25th. We get a massive spike. The morning sees 13.1ft SW swell with a 16-second period, but the wind is onshore and strong. The afternoon gets even bigger, with 16.4ft SW swell and a 16-second period, but a fresh 21.7 mph cross-onshore wind makes it a complete mess. The energy is off the charts at 13015, but it’s not for paddling.

Saturday the 26th is interesting. The swell eases a bit to 13.1ft to 14.8ft, still with a very long 17-second period. The wind swings to a cross-shore from the south, and while it’s still a bit lumpy, the energy is still huge at 13120 in the morning. This is expert-only territory, and the long period will make it wall up at a reef like Cobblestones. This is a promising day for the big-wave chargers, but the wind isn’t perfect.

Sunday the 27th sees the swell drop back to 9.8ft from the SW with a 15-second period and a cross-off breeze, which is clean. It’s a decent option after the big days.

The final few days, Monday the 28th and Tuesday the 29th, see the swell drop off significantly. Monday has 9.8ft but with a shorter 12-second period and onshore wind. Tuesday starts with a tiny 5.2ft and ends with a massive spike to 18.0ft from the SSW, but with a strong onshore wind, so it’s another day of messy, powerful surf.

Overall, Tuesday morning the

Short Range Forecast

Mostly dry. Warm (max 23°C on Wed afternoon, min 11°C on Mon night). Winds increasing (light winds from the ESE on Tue afternoon, fresh winds from the NNE by Wed night).

Days 4-6 Weather Summary

Heavy rain (total 35mm), heaviest during Fri afternoon. Very mild (max 19°C on Thu morning, min 13°C on Fri night). Mainly strong winds.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
5
4
5
4
3
3
4
4
1
0
2
4
0
0
0
0
1
3
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
4
SW
14
3.5
SW
14
3
SW
14
3
SW
14
2.5
SW
14
2.1
SW
13
1.6
SW
13
1.5
WSW
14
1.6
WSW
14
1.5
WSW
13
2.1
WSW
12
2.4
WSW
15
3
WSW
16
3.5
WSW
15
3.5
WSW
14
3.5
WSW
14
3
WSW
13
3
SW
13
3.5
SW
15
3.5
SW
16
Wave Graph
Metric surfscale
Energy kJ
5472
5602
4691
4216
3777
2534
1584
865
947
971
808
1237
2722
5372
5431
4507
3820
2801
3422
5651
5898
Wind (km/h)
20
ESE
15
SE
25
E
15
ENE
10
SSE
15
E
20
NE
10
N
25
NE
25
NNW
30
NNW
30
N
10
SSE
40
S
35
SW
25
W
25
W
15
WSW
10
WNW
15
NW
20
NW
Wind State
cross-off
cross-off
cross-off
off
cross
cross-off
cross-off
cross-off
off
cross
cross
cross-off
cross
cross
cross-on
on
cross-on
on
cross-on
cross-on
cross
High Tide
10:57AM0.43m
10:43PM0.72m
9:41AM0.38m
11:04PM0.76m
11:28PM0.79m
11:55PM0.81m
00:25AM0.81m
1:03AM0.80m
2:38AM0.77m
Low Tide
2:41PM0.40m
7:39AM0.38m
2:06PM0.35m
2:02PM0.31m
2:13PM0.28m
2:26PM0.27m
2:39PM0.27m
2:51PM0.28m
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
mod rain
heavy rain
rain showers
cloud
part cloud
rain showers
cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:20
6:18
6:16
6:16
6:15
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:10
6:10
6:12
6:13
6:13
6:14
 mm
7
19
8
1
3
Temp °C
14
17
15
17
20
19
20
23
23
19
19
18
18
14
14
15
16
16
16
17
17
Feels °C
10
15
11
14
18
16
18
22
21
17
17
14
15
7
6
9
12
12
14
15
15
  • 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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