Surf Forecasts:
Secret Harbour surf forecast from 14 Sep 2026:
- Best quality surf: Monday 14 Sep, 11AM (local time) - 7.5ft (2.3m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 5PM (local time) - 10ft (3.0m), 17s period, WSW swell with 4,868 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 11AM (local time) - 7.5ft (2.3m), 14s 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 Monday (Sep 14) at 11AM. The primary swell is predicted to be 2.3m and 14s 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 3.0m 17s and forecast to arrive on Friday (Sep 18) 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 0.9m 4s period and expected on Thursday (Sep 17) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 14th Sep) | 7.5ft (2.3m) 14s |
| Best Surf | 11AM (Mon 14th Sep) | 7.5ft (2.3m) 14s |
| Most Powerful | 5PM (Fri 18th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Secret Harbour over the next 16 days.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 13°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Fri night. Warm (max 22°C on Thu morning, min 14°C on Fri night). Winds decreasing (strong winds from the SW on Fri night, calm by Sat night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | W 8 | WSW 17 | W 16 | W 15 | W 14 | WSW 13 | WSW 12 | WSW 13 | WSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2027 | 1937 | 1773 | 1637 | 1464 | 1127 | 597 | 475 | 462 | 390 | 384 | 265 | 585 | 4868 | 3353 | 2650 | 2097 | 1568 | 1035 | 1175 | 2143 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | off | cross-off | glassy | cross-off | cross | cross | cross-off | cross-off | cross-on | cross-on | on | on | cross-off | cross | on | glassy |
High Tide | 11:02AM0.49m | 10:56PM0.75m | 10:13AM0.43m | 11:19PM0.76m | 11:48PM0.77m | 00:21AM0.77m | 1:05AM0.76m | 2:13AM0.76m | 3:56AM0.75m | ||||||||||||
Low Tide | 3:24PM0.42m | 6:51AM0.41m | 3:06PM0.38m | 2:55PM0.34m | 2:49PM0.31m | 2:41PM0.30m | 2:31PM0.31m | 2:26PM0.31m | |||||||||||||
 |  |  | | |  | | | | | | |  |  |  | | | | | | | |
 | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — |
 | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 14 | — | — | — | — | — | — |
Temp °C | 19 | 20 | 17 | 19 | 22 | 19 | 23 | 27 | 26 | 22 | 20 | 18 | 21 | 18 | 15 | 15 | 16 | 16 | 16 | 17 | 16 |
Feels °C | 15 | 16 | 13 | 17 | 20 | 14 | 21 | 25 | 26 | 17 | 18 | 17 | 16 | 12 | 9 | 9 | 11 | 13 | 13 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | W 16 | — | W 16 | W 15 | W 14 | WSW 13 | WSW 12 | WSW 13 | WSW 16 |
| kJ | 2027 | 1937 | 1773 | 1637 | 1464 | 1127 | 597 | 475 | 462 | 390 | 384 | 265 | 267 | — | 3353 | 2650 | 2097 | 1568 | 1035 | 1175 | 2143 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 16 | W 21 | W 20 | WSW 19 | WSW 18 | W 20 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 46 | 9 | 30 | 69 | 109 | 121 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 4 | — | — | — | NE 3 | — | NE 3 | NNW 4 | NNW 5 | NW 6 | W 8 | WSW 17 | — | — | — | — | — | — | — |
| kJ | — | — | 14 | — | — | — | 2 | — | 2 | 17 | 37 | 240 | 585 | 4868 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 45 | 44 | 0 | 21 | 0 | 49 | 0 | 143 | 307 | 307 | 221 | 170 | 312 | 360 | 418 | 1980 | 0 | 143 | 307 | 0 |
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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