Cottesloe Beach Surf Break

Lat Long: 31.99° S 115.74° E

Cottesloe Beach Surf Forecast and Surf Report

Issued: 1 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cottesloe Beach sea temperature is
17.6°C
1.2° 

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


Cottesloe Beach surf forecast from 2 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 11PM (local time) - 10ft (3.0m), 17s period, WSW swell with offshore winds.
  • Most powerful swell: Sunday 6 Sep, 11PM (local time) - 10ft (3.0m), 17s period, WSW swell with 5,331 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 11PM (local time) - 7ft (2.1m), 13s period with WSW swell.

Best Forecast Surf Conditions for Cottesloe Beach this week:

The surf forecast for Cottesloe Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 11PM. The primary swell is predicted to be 2.1m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cottesloe Beach in the next 16 days are 3.0m 17s and forecast to arrive on Sunday (Sep 06) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Sep 06) at 11AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 2nd Sep)7ft (2.1m) 13s
Best Surf11PM (Sun 6th Sep)10ft (3.0m) 17s
Most Powerful11PM (Sun 6th Sep)10ft (3.0m) 17s

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


The Lowdown

Alright, Rusty here. Let's talk about what's coming up at Cottesloe Beach.

Overall, the pattern is a bit of a slow burn, then a solid run of quality surf from the second week. The start is going to be tricky with a lot of onshore and cross-onshore wind messing things up, but if you're patient and experienced, there are some absolute gems on the horizon. The water temperature is sitting at 64°, which is a bit colder than normal for this time of year, so a good steamer is a smart call.

We kick off with a pulse of swell on Wednesday the 2nd. We're looking at a 7ft swell from the WSW at 13 seconds, but the wind is howling from the W at 9 mph, coming straight onshore. The combined energy is strong (1452), but the conditions are marginal at best. This one is a pass for a paddle.

Thursday the 3rd is similar. The swell picks up a touch to 8ft, but the wind is stronger and still onshore or cross-onshore, making it a write-off. Friday the 4th sees the swell bump up to 10ft from the WSW with a 14-second period, giving us a very strong energy reading of 3489. However, the wind stays cross-onshore, so it's messy and big. At 10ft, this is comfortably in the expert-only zone and the conditions aren't good enough to recommend it.

Saturday the 5th is a gale-force disaster. 12ft of swell (4119 energy) and a 40 mph SW gale creating a complete mess. That's a solid "stay home" day.

Sunday the 6th is where things start to look up. The swell drops to 10ft still, but the wind swings offshore from the S and SSE, cleaning things up. The morning is clean, and the afternoon is clean too. The energy is still strong (2968-3051), so this is for experienced surfers only. It's a good day if you're solid, but not the standout.

Now, the real standout starts on Monday the 7th. Monday morning, the wind is light and offshore from the SE at 9 mph. We have a 8ft swell from the WSW with a very long period of 16 seconds. This is proper groundswell. The energy is strong (3080), and the conditions are described as excellent for experienced surfers. This is the best session on offer in the first week. The long period will make for some beautiful, powerful lines, but it might be a bit fat and straight on the beach, so keep that in mind.

Tuesday the 8th is another cracker. The swell drops to 6ft in the morning, but the wind is light offshore from the ESE. The period is still 14 seconds, and the energy is still strong (2304). The morning is clean, but the afternoon is even better with a 8ft swell and the same offshore wind, giving a 16-second period and 2716 energy. Another excellent day for experienced surfers.

Wednesday the 9th holds the quality. Swell at 7ft, 16-second period, clean conditions with a moderate offshore breeze. The afternoon is especially good with a light 6 mph cross-offshore breeze and a 15-second period. Solid, clean surf.

The surf drops off a cliff on Thursday the 10th. Swell drops to 5ft, and the wind goes onshore. Not worth it.

The Second Week:

A new pulse arrives on Friday the 11th, but it's a bit windy. Saturday the 12th is a true standout. Swell is 8ft from the WSW at 16 seconds, with a light offshore breeze in the morning. This is excellent, clean, and powerful. The afternoon is also clean with a 8ft swell. This is the pick of the second week.

Sunday the 13th is messy with cross-onshore winds. Monday the 14th is a special one. The morning is completely glassy, with a 7ft swell from the WSW at 15 seconds. The energy is still strong (1801). If you can get out on that glassy morning, it will be perfect. The afternoon gets a bit choppy.

Tuesday the 15th and Wednesday the 16th are small and marginal. By Thursday the 17th, the swell is small again, but the morning is glassy with a 6ft, 12-second period swell. It will be a clean, fun option for a longboard or a fish.

The two clear standouts are Monday the 7th and Saturday the 12th. Both have excellent swell, very long periods, and clean, offshore winds. Monday the 7th is the best of the early week, while Saturday the 12th is the best of the second week. For the glassy, perfect conditions, don't miss Monday the 14th morning.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Wed afternoon. Very mild (max 17°C on Thu afternoon, min 14°C on Wed night). Winds increasing (calm on Wed night, strong winds from the WSW by Thu night).

Days 5-7 Weather Summary

Moderate rain (total 11mm), heaviest on Sat night. Very mild (max 19°C on Mon afternoon, min 8°C on Mon morning). Winds decreasing (gales from the SW on Sat afternoon, light winds from the SSE by Mon afternoon).

Wed
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
4
2
0
0
0
2
2
0
0
0
2
3
5
4
3
4
4
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
WSW
13
2.1
WSW
13
2.1
WSW
14
2.4
WSW
14
3
WSW
14
2.5
WSW
13
3
WSW
14
3
WSW
15
2.5
WSW
14
3.5
WSW
13
4
WSW
12
3
WSW
13
3
WSW
13
3
WSW
17
2.4
WSW
16
2.1
WSW
16
2
WSW
16
1.8
WSW
14
2.3
WSW
16
2.2
WSW
16
Wave Graph
Metric surfscale
Energy kJ
1452
1510
1822
2445
3619
2164
3489
3560
2613
4119
4869
2889
2591
4757
3080
2191
1828
1301
2716
2271
Wind (km/h)
15
W
5
ESE
15
NW
30
WNW
40
W
25
SW
15
SW
15
NW
30
WNW
65
SW
45
S
35
S
25
SSE
15
SE
15
SE
20
SE
20
ESE
15
ESE
20
ESE
20
E
Wind State
on
off
cross-on
on
cross-on
cross-on
cross-on
on
on
cross
cross-off
cross-off
cross-off
off
off
cross-off
off
off
off
off
High Tide
00:22AM0.61m
1:17AM0.62m
3:11AM0.62m
5:00AM0.64m
6:17AM0.66m
7:18AM0.66m
Low Tide
2:55PM0.21m
1:48PM0.14m
2:08PM0.07m
2:38PM0.02m
3:10PM-0.00m
3:40PM0.00m
4:06PM0.04m
light rain
light rain
cloud
part cloud
rain showers
part cloud
part cloud
cloud
light rain
light rain
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:28
6:28
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:00
6:00
6:01
6:02
6:02
6:04
 mm
1
2
2
2
4
7
Temp °C
16
15
16
17
17
16
16
16
16
17
13
13
17
15
14
19
16
15
20
16
Feels °C
13
14
14
13
10
10
11
13
12
9
2
4
11
9
10
14
12
11
16
12
  • 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 Cottesloe Beach Surf forecast

The above surf forecast table for Cottesloe Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cottesloe Beach can be found by selecting the local surf guide option on the grey menu. Our Cottesloe Beach 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 (Cottesloe Beach) 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 Cottesloe Beach 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.

Cottesloe Beach is 7 km (4 miles) from the very large city of Fremantle. If you plan a holiday in Perth City Coast, look for hotels and other accommodation in Fremantle. Fremantle has rooms for a wide range of budgets as well as cheap car hire and transport links.

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