Surf Forecasts:
Secret Harbour surf forecast from 17 Jun 2026:
- Best quality surf: Thursday 18 Jun, 8AM (local time) - 4ft (1.2m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 18 Jun, 11AM (local time) - 5ft (1.5m), 17s period, WSW swell with 1,377 kJ wave energy.
- Next surfable swell (1★+): Thursday 18 Jun, 2AM (local time) - 4.5ft (1.3m), 12s period with SW 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 Thursday (Jun 18) at 2AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.6m and 20s. 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 1.5m 17s and forecast to arrive on Thursday (Jun 18) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Jun 24) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 18th Jun) | 4.5ft (1.3m) 12s |
| Best Surf | 8AM (Thu 18th Jun) | 4ft (1.2m) 14s |
| Most Powerful | 11AM (Thu 18th Jun) | 5ft (1.5m) 17s |
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. Very mild (max 16°C on Wed afternoon, min 10°C on Thu morning). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Sun night. Very mild (max 18°C on Sat afternoon, min 10°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 12 | SW 12 | WSW 17 | WSW 16 | WSW 16 | W 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 16 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 542 | 427 | 1377 | 787 | 1255 | 1102 | 880 | 639 | 500 | 485 | 605 | 648 | 639 | 763 | 443 | 612 | 870 | 586 | 484 | 317 | 161 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-on | off | cross-off | glassy | off | cross-off | cross | cross-off | cross-off | cross | cross-on | off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 11:12AM1.10m | 11:41AM1.04m | 11:48AM0.96m | 10:23AM0.88m | 8:11AM0.85m | 5:48AM0.86m | 5:38AM0.90m | ||||||||||||||
Low Tide | 8:32PM0.40m | 9:17PM0.48m | 9:51PM0.57m | 9:58PM0.64m | 8:57PM0.68m | 7:04PM0.65m | 6:27PM0.58m | ||||||||||||||
 |  |  | | | | |  |  | |  | |  |  | | | | | | | | |
 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 |
 | 5:17 | — | — | 5:17 | — | — | 5:17 | — | — | 5:19 | — | — | 5:19 | — | — | 5:19 | — | — | 5:19 | — | 5:20 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 9 | 2 | — | — | — | — | — | — |
Temp °C | 16 | 15 | 12 | 14 | 14 | 13 | 16 | 15 | 14 | 18 | 18 | 16 | 18 | 17 | 14 | 14 | 14 | 12 | 15 | 12 | 12 |
Feels °C | 12 | 10 | 10 | 11 | 10 | 10 | 14 | 11 | 9 | 14 | 15 | 12 | 16 | 15 | 12 | 12 | 11 | 6 | 10 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | W 22 | SW 12 | WSW 17 | WSW 16 | WSW 16 | W 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 10 | WSW 16 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 |
| kJ | 38 | 427 | 1377 | 787 | 1255 | 1102 | 880 | 639 | 500 | 485 | 605 | 648 | 639 | 763 | 237 | 612 | 870 | 586 | 484 | 317 | 161 |
Swell 2 Height (m) Direction Period (s) | — | WSW 20 | — | WSW 13 | — | — | — | — | — | — | — | — | WSW 9 | WSW 6 | WSW 14 | SW 10 | — | W 6 | — | — | — |
| kJ | — | 304 | — | 346 | — | — | — | — | — | — | — | — | 26 | 50 | 443 | 181 | — | 1 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | WSW 16 | — | — | — | — | — | — | — | — | — | — | WSW 5 | — | — | N 4 | — | — | — | — | — |
| kJ | — | 84 | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 8 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 12 | — | — | — | — | — | — | NE 3 | N 4 | NNW 4 | NNW 5 | N 3 | NNW 3 | W 5 | — | — | ENE 2 | E 3 | ESE 3 | ENE 4 | NNE 4 |
| kJ | 542 | — | — | — | — | — | — | 2 | 15 | 22 | 15 | 6 | 4 | 57 | — | — | 1 | 8 | 1 | 18 | 31 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 101 | 0 | 0 | 21 | 0 | 0 | 0 | 0 | 46 | 80 | 44 | 46 | 101 | 101 | 0 | 0 | 45 | 170 | 24 | 0 | 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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