Cobblestones Surf Break

Lat Long: 33.88° S 114.98° E

Cobblestones Surf Forecast and Surf Report

Issued: 1 pm 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cobblestones sea temperature is
17.9°C
0.8° 

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


Cobblestones surf forecast from 16 Sep 2026:

  • Best quality surf: Saturday 19 Sep, 11AM (local time) - 25ft (7.5m), 14s period, W swell with cross-onshore winds.
  • Most powerful swell: Saturday 19 Sep, 11AM (local time) - 25ft (7.5m), 14s period, W swell with 22,820 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 16 Sep, 11PM (local time) - 5ft (1.5m), 15s 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 Wednesday (Sep 16) at 11PM. The primary swell is predicted to be 1.5m and 15s period with a secondary swell of 0.8m and 12s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cobblestones in the next 16 days are 7.5m 14s and forecast to arrive on Saturday (Sep 19) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 9s period and expected on Saturday (Sep 19) at 2AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 16th Sep)5ft (1.5m) 15s
Best Surf11AM (Sat 19th Sep)25ft (7.5m) 14s
Most Powerful11AM (Sat 19th Sep)25ft (7.5m) 14s

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


The Lowdown

Alright, let’s talk surf. The 16-day forecast starts Wednesday September 16, and the first rideable waves are small and not much to write home about. There’s a gap of a few days early on where you’re better off staying dry.

Cobblestones shows 1.6m SW swell on Wednesday afternoon, period 13 seconds, with a light NW breeze at 5 km/h coming cross-off. Water temp is around 64°F, about normal. The energy’s moderate at 1250, but conditions are only so-so.

Thursday morning shapes up a bit better: 1.6m from the WSW, 14-second period, and a moderate N wind at 15 km/h cross-off keeps it clean. Energy’s still moderate at 1029. By afternoon, it fades – wind shifts cross-shore, and the waves get weaker.

Friday morning brings a 1.7m WSW groundswell with a 17-second period – long period, which Cobblestones as a reef will love. Energy jumps to 2030, and a fresh NNE wind at 19 km/h cross-off keeps it tidy. Good for advanced surfers, but not the top pick.

Saturday September 19 gets huge: 7.5m W swell with a 14-second period and a near-gale W wind at 34 km/h – cross-on and blown out. Energy is a massive 22820, but it’s too big – only for experts, and even then it’s messy.

Now the standout: Friday September 25. A 4.5m SW swell with a 19-second period – that’s very long period groundswell. Energy hits 15263, strong. The wind is cross from the SSE at 19 km/h, making it lumpy but rideable for experts. Saturday September 26 morning is the real gem: 3.5m SW swell, 16-second period, cross-off ESE breeze at 9 km/h, clean, with energy at 5540. That’s exceptional for advanced to expert surfers – the reef will turn those long-period swells into beautiful, powerful waves.

Further out, Wednesday September 30 morning looks glassy – N wind at 3 km/h, 3.5m SW swell, 15-second period, energy at 5896. Another exceptional expert session, but it’s over a week out, so keep an eye on it.

From the 19th through the 24th, there are gaps of poor conditions – too big, too windy, or just flat. The run from the 25th into the 26th is your best bet.

Rusty

Short Range Forecast

Light rain (total 9mm), mostly falling on Sat morning. Warm (max 22°C on Wed afternoon, min 15°C on Thu night). Winds increasing (light winds from the NW on Wed afternoon, near gales from the NW by Fri night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Mon night. Very mild (max 17°C on Mon afternoon, min 13°C on Sun night). Winds decreasing (strong winds from the W on Sat afternoon, light winds from the E by Sun night).

Wed
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
3
2
4
2
2
0
!
0
0
2
3
7
5
2
0
0
0
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
13
1.6
WSW
14
1.6
WSW
14
1.5
WSW
13
1.5
WSW
12
1.7
WSW
17
1.9
WSW
16
2.5
WSW
16
7.5
W
14
5.5
W
13
3.5
WSW
13
2.5
WSW
12
3
SW
16
4
SW
15
3.5
SW
15
3
SW
15
2.5
WSW
14
3
SW
14
3.5
SW
14
3.5
SW
13
Wave Graph
Metric surfscale
Energy kJ
865
1072
971
796
636
1626
1951
2887
22820
8808
3752
1783
4490
6134
5404
4584
3108
3280
4189
3724
Wind (km/h)
5
NW
15
NE
25
N
20
NNW
10
N
30
NNE
30
N
45
NNW
55
W
35
W
20
SW
10
SSW
15
SSW
5
NNE
15
NW
20
WNW
25
SW
20
WSW
25
SSW
10
SE
Wind State
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross
cross-on
on
on
cross-on
cross-on
cross-off
cross
cross-on
on
on
cross-on
cross-off
High Tide
11:28PM0.79m
11:55PM0.81m
00:25AM0.81m
1:03AM0.80m
2:38AM0.77m
6:05AM0.76m
Low Tide
2:02PM0.31m
2:13PM0.28m
2:26PM0.27m
2:39PM0.27m
2:51PM0.28m
3:03PM0.28m
3:14PM0.30m
clear
clear
clear
clear
part cloud
clear
cloud
light rain
light rain
cloud
part cloud
part cloud
clear
clear
clear
cloud
rain showers
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:15
6:13
6:11
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:10
6:12
6:13
6:13
6:14
6:15
6:15
 mm
4
5
3
Temp °C
22
21
20
19
17
19
20
17
15
16
16
16
16
14
16
17
16
15
15
15
Feels °C
21
21
18
17
15
15
15
13
5
9
10
13
12
12
13
14
13
9
10
11
  • 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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