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Secret Harbour Surf Forecast
/ WA – Perth City (29 breaks) / Western Australia (159 breaks) /
Secret Harbour surfForecast / WA – Perth City / Australia
12 Day Weather and Surf, issued 7 am Tuesday 20 May 2025 AWST
Best Forecast Surf Conditions for Secret Harbour this week:
The surf forecast for Secret Harbour over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 20) at 2PM. The primary swell is predicted to be 2.5m and 14s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Secret Harbour in the next 12 days are 3.0m 21s and forecast to arrive on Wednesday (May 21) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (May 27) at 5AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Tue 20th May) | 8ft (2.5m) 14s |
| Best Surf | 8PM (Wed 21st May) | 10ft (3.0m) 20s |
| Most Powerful | 5PM (Wed 21st May) | 10ft (3.0m) 21s |
Table - best surf conditions forecast for Secret Harbour over the next 12 days.
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 15 | 21 | 18 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 13 | 13 | 12 | 12 | 12 | 18 | 18 | 16 | 15 | 15 | 14 | 13 | 18 | 16 | 16 | 16 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 2287 | 2402 | 1913 | 1680 | 6727 | 5568 | 3090 | 3034 | 2813 | 2582 | 2194 | 1682 | 1134 | 965 | 680 | 491 | 386 | 372 | 273 | 458 | 421 | 325 | 230 | 174 | 162 | 222 | 254 | 234 | 288 | 405 | 284 | 340 | 582 | 758 | 730 | 1838 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | off | cross- off | cross- on | off | cross | cross- on | cross | cross | cross- on | cross- off | cross- off | cross- on | cross- off | cross- off | on | off | off | cross- on | off | off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | on | cross |
High Tide / height (m) | 1:59PM 1.00 | 10:08AM 0.87 | 3:47PM 0.91 | 7:30AM 0.87 | 6:05PM 0.81 | 7:08AM 0.91 | 8:34PM 0.73 | 7:24AM 0.96 | 11:05PM 0.67 | 7:52AM 1.01 | 8:27AM 1.06 | 9:03AM 1.09 | 9:40AM 1.11 | 10:16AM 1.11 | 10:49AM 1.10 | 11:16AM 1.07 | ||||||||||||||||||||
Low Tide / height (m) | 12:07AM 0.64 | 11:18AM 0.87 | 12:21AM 0.67 | 1:23PM 0.75 | 12:28AM 0.69 | 2:29PM 0.62 | 12:26AM 0.69 | 3:30PM 0.50 | 11:40PM 0.67 | 4:31PM 0.41 | 5:34PM 0.34 | 6:42PM 0.31 | 7:51PM 0.32 | 8:57PM 0.36 | 9:56PM 0.42 | 10:42PM 0.49 | ||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | |||||||||||||||||||||||||
| Sunrise | 7:01 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - | 7:05 | - | - | 7:05 | - | - | 7:07 | - | - | 7:07 | - | - | 7:07 | - | - | 7:09 | - | - |
| Sunset | - | 5:23 | - | - | 5:23 | - | - | 5:22 | - | - | 5:22 | - | - | 5:22 | - | - | 5:22 | - | - | 5:21 | - | - | 5:21 | - | - | 5:21 | - | - | 5:20 | - | - | 5:20 | - | - | 5:20 | - |
 | |  | | | |  | |  |  | | | | |  | | | | | | | | | | | | | | | |  |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 14 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 12 | 4 | 2 | 2 | 3 |
| Temp. °C | 16 | 20 | 18 | 18 | 20 | 18 | 19 | 21 | 20 | 14 | 15 | 14 | 13 | 15 | 15 | 14 | 16 | 16 | 17 | 20 | 18 | 18 | 22 | 20 | 19 | 22 | 19 | 20 | 24 | 22 | 20 | 20 | 19 | 20 | 21 | 19 |
| Feels °C (?) | 13 | 17 | 14 | 15 | 17 | 16 | 15 | 16 | 14 | 9 | 10 | 8 | 8 | 10 | 11 | 12 | 14 | 15 | 14 | 19 | 15 | 13 | 18 | 15 | 14 | 17 | 14 | 13 | 21 | 19 | 14 | 18 | 18 | 19 | 20 | 18 |
Short Range Forecast: Moderate rain (total 14mm), heaviest on Thu night. Warm (max 21°C on Thu afternoon, min 11°C on Tue morning). Winds increasing (light winds from the SSW on Tue afternoon, fresh winds from the W by Thu night). | Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Sun afternoon, min 10°C on Sat morning). Wind will be generally light. | Days 6-9 Weather Summary Mostly dry. Warm (max 22°C on Tue afternoon, min 13°C on Mon morning). Winds increasing (calm on Mon afternoon, fresh winds from the ENE by Wed night). | Long Range Forecast: Heavy rain (total 24mm), heaviest during Fri afternoon. Warm (max 24°C on Thu afternoon, min 16°C on Thu morning). Winds decreasing (fresh winds from the NE on Thu morning, calm by Sat night). | |||||||||||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 12 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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