Cottesloe Beach Surf Break

Lat Long: 31.99° S 115.74° E

Cottesloe Beach 48 hour detailed Surf Forecast

Issued: 1 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cottesloe Beach sea temperature is
17.0° C
1.8° 

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


How big are the waves at Cottesloe Beach today (18 Aug):

  • Morning surf: Morning surf (18 Aug, local time) - 11ft (3.5m), 15s period with WSW swell.
  • Afternoon surf: Afternoon surf (18 Aug, local time) - 11ft (3.5m), 16s period with WSW swell.
  • Evening surf: Evening surf (18 Aug, local time) - 10ft (3.0m), 16s period with WSW swell.

The current surf forecast for Cottesloe Beach at 9PM is: 3.0m 16s primary swell from a West-southwest direction (forecast issued at 01:00pm August 18). The wind direction is predicted to be onshore.

Time (AWST) & DateWave HeightWave Period
Morning (18 Aug)11ft (3.5m)15s
Afternoon (18 Aug)11ft (3.5m)16s
Evening (18 Aug)10ft (3.0m)16s

Table - waves today at Cottesloe Beach. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 4mm), mostly falling on Tue night. Very mild (max 17°C on Tue night, min 13°C on Fri morning). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
3
2
2
2
2
0
0
2
3
2
2
4
5
5
5
4
4
2
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
W
16
3.5
W
16
3.5
WSW
16
3
WSW
16
3
W
16
3
WSW
16
2.5
WSW
15
2.5
WSW
15
2.4
WSW
15
2.5
WSW
15
3
WSW
15
3
WSW
16
3
WSW
16
3
WSW
16
3
WSW
16
3
WSW
16
2.5
WSW
16
2.5
WSW
16
2.4
WSW
16
2.4
WSW
16
2.3
WSW
16
Wave Graph
Metric surfscale
Energy kJ
6079
6236
5641
4944
4466
3863
3311
2700
2460
2786
3424
4263
4318
4430
4213
3944
3594
3216
2696
2696
2491
Wind (km/h)
10
WNW
15
WNW
15
WNW
15
WNW
20
WNW
25
WNW
20
WNW
10
W
10
WNW
15
W
15
W
10
SW
10
SE
10
SE
10
E
10
E
0
SE
15
SW
15
SSW
15
SSE
15
SE
Wind State
on
on
on
on
on
on
on
cross-on
on
cross-on
cross-on
cross
cross-off
off
off
cross-off
glassy
cross-on
cross
cross-off
cross-off
High Tide
8:20AM0.33m
1:02AM0.55m
1:50AM0.56m
Low Tide
4:28PM0.19m
3:33PM0.16m
3:15PM0.13m
clear
part cloud
cloud
cloud
cloud
light rain
cloud
rain showers
clear
clear
clear
light rain
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:51
5:52
5:52
 mm
1
1
1
1
Temp °C
16
16
16
16
16
16
17
16
17
17
17
16
15
14
14
14
15
16
16
16
16
Feels °C
13
12
12
12
12
11
12
14
15
14
14
14
13
12
12
12
15
13
13
14
14
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cottesloe Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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