
Surf Forecasts:
Secret Harbour surf forecast from 9 Jul 2026:
- Best quality surf: Monday 13 Jul, 5AM (local time) - 7ft (2.1m), 19s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 13 Jul, 5AM (local time) - 7ft (2.1m), 19s period, WSW swell with 3,178 kJ wave energy.
- Next surfable swell (1★+): Saturday 11 Jul, 2AM (local time) - 4.5ft (1.4m), 12s 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 Saturday (Jul 11) at 2AM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.1m and 13s. 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 2.1m 19s and forecast to arrive on Monday (Jul 13) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Wednesday (Jul 15) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 11th Jul) | 4.5ft (1.4m) 12s |
| Best Surf | 5AM (Mon 13th Jul) | 7ft (2.1m) 19s |
| Most Powerful | 5AM (Mon 13th Jul) | 7ft (2.1m) 19s |
Table - best surf conditions forecast for Secret Harbour over the next 16 days.
Alright, crew, let's have a look at what's cookin' for Secret Harbour over the next couple of weeks. Rusty here, with the local skinny.
First up, the water temp is sitting at 66°, which is about 1° cooler than normal for this time of year—nothing wild, just a touch nippy, so you might want that spring suit for the early sessions.
The outlook starts with a bit of a slow burner. Thursday morning the 9th is the first real chance to get wet, but it's a bit average. We've got a 7ft W swell pushing in, but the 15 km/h north wind is making things a bit wonky. The energy is pumping hard at 1881, but the quality is just not there. It might be worth a look if you're desperate, but don't expect much.
Friday the 10th is a write-off. The swell drops a touch, but the wind is all over the shop, making a mess of things. Saturday the 11th isn't much better—small and cross-shore. You'd be better off doing something else.
Now, here's where it gets interesting. Sunday morning the 12th is a proper standout. The swell holds at 6ft from the WSW, but the magic is that light 10 km/h SE breeze, which is cross-off, leaving the waves clean. The energy is a solid 1901, and the period is a lovely 16 seconds—that's proper groundswell. This is an exposed sandbar, so that long period will set up nicely, but it will be a bit more challenging at the take-off. For the experienced crew, this is your window.
Sunday morning the 12th is the pick of the first week. Clean, solid, and with some grunt.
Monday morning the 13th is a carbon copy, but with even more size—7ft and a 17-second period, with the same clean offshore-ish wind. The energy is huge at 2581. This is for the advanced crew only; it's going to be a freight train. Tuesday the 14th is another gem, with a proper offshore ENE wind at 15 km/h keeping the 7ft swell glassy all morning. It's a rare run of clean mornings.
The middle of the week sees the wind pick up again, but Wednesday afternoon the 15th and Thursday morning the 16th still offer a clean 6ft to 6ft if you can handle the onshore breeze that messes up the afternoon. It's not the best, but it's surfable.
The second week gets a bit chaotic. A big storm swell is forecast for Thursday the 23rd, with a massive 15ft to 16ft W swell. That's way too big for this spot and the wind is onshore anyway. Don't even think about it.
However, the real standout of the whole 16-day window is Friday the 24th. The morning is looking exceptional. The swell is a solid 12ft from the WSW, with a 17-second period—that's a massive, long-period groundswell. The energy reading is a staggering 13760. The wind is light, 10 km/h from the ESE, and it's cross-off, which means clean, lined-up waves. This is for experts only—it's big, powerful, and not for the faint-hearted. The afternoon is also big but the wind swings onshore, making it a bit messy. If you're an experienced surfer, circle the 24th on the calendar. It's a ways out, so keep an eye on the charts, but the potential is huge.
So, to sum it up: the first week has a few good clean mornings, with Sunday the 12th and Monday the 13th being the best. The second week is a write-off until the 24th, which is the big, expert-only pay-off. For the rest of the time, it's a mix of choppy, onshore, and small stuff. The consistent crew will get a few waves, but you have to pick your moments.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu night. Very mild (max 19°C on Thu afternoon, min 11°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Tue afternoon, min 11°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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) | W 15 | W 14 | WSW 14 | WSW 13 | WSW 14 | WSW 12 | WSW 13 | WSW 13 | WSW 14 | WSW 16 | WSW 15 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 14 |
Wave Graph | |||||||||||||||||||||
1881 | 1617 | 1030 | 908 | 999 | 554 | 596 | 863 | 1106 | 1592 | 1091 | 1431 | 2574 | 2282 | 2398 | 2001 | 1505 | 1241 | 880 | 724 | 947 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:28AM0.98m | 6:27AM1.02m | 7:26AM1.06m | 8:21AM1.09m | 9:12AM1.10m | 9:58AM1.09m | |||||||||||||||
Low Tide | 3:57PM0.50m | 4:01PM0.39m | 4:33PM0.30m | 5:10PM0.26m | 5:50PM0.26m | 6:28PM0.30m | 7:04PM0.37m | ||||||||||||||
7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | |
— | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | |
mm | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 19 | 19 | 15 | 15 | 14 | 14 | 15 | 14 | 13 | 15 | 15 | 12 | 15 | 14 | 13 | 19 | 19 | 18 | 21 | 20 |
Feels °C | 13 | 16 | 16 | 14 | 11 | 10 | 12 | 12 | 11 | 11 | 12 | 12 | 9 | 12 | 11 | 9 | 15 | 14 | 12 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | W 15 | W 14 | WSW 14 | WSW 13 | WSW 14 | WSW 12 | WSW 13 | WSW 13 | WSW 14 | WSW 16 | WSW 15 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 14 |
1881 | 1617 | 1030 | 908 | 999 | 554 | 596 | 863 | 1106 | 1592 | 1091 | 1431 | 2574 | 2282 | 2398 | 2001 | 1505 | 1241 | 880 | 724 | 947 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 13 | — | W 13 | NW 13 | W 22 | WSW 18 | WSW 20 | WSW 18 | WSW 13 | NW 14 | NW 13 | NW 13 | NW 13 | NW 14 | NW 14 | W 18 | WNW 14 | WSW 16 |
— | — | — | 3 | — | 3 | 6 | 9 | 572 | 301 | 572 | 504 | 7 | 7 | 7 | 7 | 8 | 7 | 25 | 18 | 346 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 13 | NW 13 | NW 14 | NW 14 | WSW 22 | — | — | — | — | — | — | NW 14 | — | WNW 13 |
— | — | — | — | — | — | — | 6 | 7 | 8 | 7 | 154 | — | — | — | — | — | — | 7 | — | 17 | |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | WSW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 3 | N 5 | NNW 5 | NNW 5 |
— | 7 | 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 42 | 31 | 20 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 278 | 101 | 50 | 101 | 0 | 21 | 101 | 0 | 0 | 21 | 0 | 0 | 21 | 0 | 0 | 0 | 101 | 278 | 0 | 167 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










