Secret Harbour Surf Break

Lat Long: 32.40° S 115.74° E

Secret Harbour Surf Forecast and Surf Report

Issued: 1 am 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Secret Harbour sea temperature is
17.8°C
0.6° 

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


Secret Harbour surf forecast from 1 Sep 2026:

  • Best quality surf: Monday 7 Sep, 2AM (local time) - 10ft (3.0m), 17s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 11PM (local time) - 11ft (3.5m), 18s period, WSW swell with 6,591 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 11PM (local time) - 7ft (2.2m), 13s period with WSW swell.

Best Forecast Surf Conditions for Secret Harbour this week:

The surf forecast for Secret Harbour 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 2.2m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Secret Harbour in the next 16 days are 3.5m 18s and forecast to arrive on Sunday (Sep 06) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 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 (2.2m) 13s
Best Surf 2AM (Mon 7th Sep)10ft (3.0m) 17s
Most Powerful11PM (Sun 6th Sep)11ft (3.5m) 18s

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


The Lowdown

G’day, I’m Rusty.

We’ve got a wild run ahead at Secret Harbour. The next day or so is a write-off—wind is on it, the swell is messy, and the scores are junk. Once the wind cleans up though, there are some solid windows of really good waves. The standout sessions land early in the second week, and then later on there’s a glassy dawn that looks proper.

Wednesday the 2nd and Thursday the 3rd are not worth suiting up for. Onshore wind, lumpy, choppy, poor quality. Friday the 4th has a big 10ft WSW swell rolling in but it’s onshore all morning and marginal at best in the arvo. Combined swell energy is pumping hard at 6974 and 4402, but that’s all just power with no shape. Saturday the 5th is another write-off with fresh cross-onshore winds and lumpy conditions. Sunday the 6th is messy too, though Monday the 7th morning shows a promising drop in wind with an 8ft WSW swell at a long 17 seconds, but it’s cross-shore with slight chop—marginal at best.

Now here’s where it gets good: Tuesday the 8th is the first real standout. Morning brings a 8ft WSW swell with a very long 17-second period, combined energy of 3128, and crucially the wind is a gentle cross-offshore breeze from the east, leaving the surf clean. It’s an advanced wave at that size, so not one for the groms. The 8ft option in the arvo is still decent but not as clean. Then Wednesday the 9th is pure gold. Morning surf is 6ft WSW with a 15-second period, gentle offshore from the ENE, and clean as a whistle. The afternoon though – 6ft, 14 seconds, and glassy calm, no wind at all. Combined energy sits at 1257 and conditions are pristine. That’s the session to circle.

After that, things fade. Thursday the 10th is small and windy, poor. Friday the 11th has a weird long-period 4ft WSW swell at 19 seconds with gentle cross-onshore wind, borderline. Saturday the 12th morning is a hidden gem: 8ft, 16-second WSW groundswell with glassy conditions and a calm sea. That’s the other standout for experienced surfers, combined energy at 2460, clean and powerful. Sunday the 13th morning is also clean with cross-offshore wind and 6ft, but the arvo turns to chop again.

From Monday the 14th onward it’s mostly onshore junk, although Tuesday the 15th morning has a light cross-shore 6ft swell that might offer a few rides, but the energy (1445) is moderate. By Wednesday the 16th and Thursday the 17th it’s back to poor or marginal conditions. Not much to get excited about in the last few days.

Overall, the best of the two-week window is Tuesday the 8th morning and Wednesday the 9th all day, with Saturday the 12th morning a solid runner-up. Crowds are sometimes an issue here, so with conditions like that you’ll want to be early.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Wed night. Very mild (max 17°C on Thu afternoon, min 14°C on Wed night). Winds increasing (calm on Wed night, strong winds from the W by Thu night).

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Sat night. Very mild (max 17°C on Sun afternoon, min 9°C on Mon morning). Winds decreasing (gales from the SSW on Sat night, light winds from the SE by Mon night).

Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
4
1
0
0
0
3
3
0
0
0
2
0
6
4
0
3
5
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
14
2.1
WSW
13
2.2
WSW
13
2.3
WSW
15
2.5
W
15
3
W
14
3
W
14
3
WSW
15
3
WSW
15
2.5
W
14
3
W
13
4
WSW
12
3.5
WSW
12
3
WSW
13
3
WSW
17
2.5
WSW
17
2.3
WSW
16
2.1
WSW
16
2.3
WSW
17
2.4
WSW
16
2.2
WSW
16
Wave Graph
Metric surfscale
Energy kJ
1701
1534
1778
2289
2930
4110
3832
4402
3626
2898
3510
4616
3830
2930
5473
3459
2716
2080
3128
3011
2247
Wind (km/h)
20
W
15
W
5
SE
20
WNW
30
WNW
40
W
25
WSW
15
WSW
20
NW
35
NW
30
WNW
45
S
35
S
25
S
15
SE
15
SSE
25
SSW
15
ESE
15
E
15
SSE
20
E
Wind State
on
cross-on
glassy
cross-on
cross-on
on
on
on
cross
cross-on
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross-off
cross-off
cross
off
High Tide
11:55AM0.47m
00:26AM0.84m
1:21AM0.85m
2:42AM0.84m
4:34AM0.84m
6:21AM0.85m
7:37AM0.86m
11:28PM0.55m
Low Tide
9:00AM0.47m
3:20PM0.46m
1:54PM0.37m
2:13PM0.29m
2:43PM0.25m
3:13PM0.23m
3:40PM0.25m
4:03PM0.29m
00:54AM0.54m
cloud
light rain
light rain
part cloud
light rain
rain showers
part cloud
part cloud
cloud
light rain
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:30
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
6:01
6:02
6:04
 mm
2
2
1
3
2
4
6
Temp °C
15
16
15
16
17
17
16
16
16
16
16
12
13
17
14
13
17
17
15
20
19
Feels °C
12
13
14
13
11
10
10
12
14
11
9
-1
5
11
8
9
12
15
12
18
16
  • 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 
submit an eyeball surf report

Quick surf report for Secret Harbour:

join our community of surf reporters

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 Secret Harbour 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.


Information about the Secret Harbour Surf forecast

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

Secret Harbour is 13 km (8 miles) from Mandurah. If you plan a holiday in Perth City Coast, look for hotels and other accommodation in Mandurah. Mandurah has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest