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Secret Harbour Surf Forecast
/ WA – Perth City (29 breaks) / Western Australia (159 breaks) /
Surf Forecasts:
Secret Harbour surfForecast / WA – Perth City / Australia
16 Day Weather and Surf, issued 1 am Wednesday 20 May 2026 AWSTForecast update in hr min s Forecast update imminent
Secret Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Secret Harbour sea temperature is
20.1° C
(Which is 1.2°C colder than average for this time of year)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 (May 20) at 5PM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.6m and 16s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Secret Harbour in the next 16 days are 2.0m 13s and forecast to arrive on Friday (May 22) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Tuesday (May 26) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 20th May) | 4.5ft (1.3m) 13s |
| Best Surf | 2AM (Thu 21st May) | 5ft (1.6m) 14s |
| Most Powerful | 2AM (Fri 22nd May) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Secret Harbour over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Wed afternoon, min 11°C on Fri night). Winds increasing (calm on Wed afternoon, fresh winds from the SSW by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 10°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | W 15 | WSW 14 | WSW 13 | WSW 13 | W 14 | W 14 | WSW 13 | W 19 | W 18 | |
874 | 538 | 1002 | 1277 | 1095 | 1401 | 918 | 890 | 560 | 461 | 399 | 230 | 161 | 465 | 356 | 298 | 429 | 405 | 282 | 472 | 865 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | glassy | cross-off | cross-on | cross-on | cross | cross | cross-on | off | off | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | |
High Tide | 11:12AM1.12m | 11:49AM1.08m | 12:21PM1.02m | 12:28PM0.94m | 9:56AM0.88m | 8:32AM0.86m | 7:33AM0.88m | ||||||||||||||
Low Tide | 10:19PM0.42m | 11:15PM0.48m | 11:56PM0.55m | 00:16AM0.62m | 00:10AM0.67m | 11:38PM0.68m | 5:44PM0.65m | ||||||||||||||
 |  |  |  | |  | | | | | | | | |  | | | | | | | |
 | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — |
 | — | 5:23 | — | — | 5:23 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:21 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 20 | 20 | 18 | 18 | 15 | 16 | 18 | 17 | 13 | 16 | 14 | 15 | 21 | 20 | 18 | 21 | 20 | 19 | 21 | 20 |
15 | 18 | 18 | 16 | 14 | 10 | 11 | 13 | 12 | 9 | 13 | 10 | 10 | 18 | 15 | 11 | 15 | 16 | 11 | 15 | 18 | |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 14 | WSW 13 | WSW 13 | W 14 | W 14 | WSW 13 | WSW 13 | W 18 |
 kJ | 874 | 538 | 1002 | 1277 | 1095 | 1401 | 918 | 890 | 560 | 461 | 399 | 230 | 103 | 465 | 356 | 298 | 429 | 405 | 282 | 222 | 865 |
Swell 2 Height (m) Direction Period (s) | — | W 16 | — | — | — | — | — | — | — | — | W 18 | WSW 16 | W 15 | NNW 4 | W 17 | W 16 | — | W 23 | W 21 | W 19 | W 11 |
| kJ | — | 172 | — | — | — | — | — | — | — | — | 6 | 50 | 161 | 6 | 146 | 186 | — | 10 | 78 | 472 | 235 |
Swell 3 Height (m) Direction Period (s) | — | NNW 4 | — | — | — | — | — | — | — | — | — | — | W 20 | W 18 | — | — | — | — | — | — | — |
| kJ | — | 2 | — | — | — | — | — | — | — | — | — | — | 30 | 58 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 4 | — | — | — | SW 6 | — | — | — | E 3 | NE 4 | — | — | NNE 3 | — | N 3 | N 5 | NNW 6 | NNW 6 | NNW 5 | NW 6 | NW 6 |
| kJ | 6 | — | — | — | 120 | — | — | — | 5 | 4 | — | — | 6 | — | 8 | 55 | 39 | 42 | 98 | 152 | 95 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 0 | 0 | 101 | 101 | 21 | 50 | 101 | 0 | 0 | 21 | 0 | 46 | 0 | 167 | 272 | 46 | 167 | 278 | 307 | 46 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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