
Surf Forecasts:
Big Rock surf forecast from 3 Jul 2026:
- Best quality surf: Monday 6 Jul, 11PM (local time) - 13ft (4.0m), 16s period, WSW swell with offshore winds.
- Most powerful swell: Monday 6 Jul, 8PM (local time) - 13ft (4.0m), 15s period, WSW swell with 7,557 kJ wave energy.
- Next surfable swell (1★+): Friday 3 Jul, 11PM (local time) - 8ft (2.5m), 14s period with SW swell.
Best Forecast Surf Conditions for Big Rock this week:
The surf forecast for Big Rock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 03) at 11PM. The primary swell is predicted to be 2.5m and 14s period with a secondary swell of 0.9m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Big Rock in the next 16 days are 4.0m 15s and forecast to arrive on Monday (Jul 06) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Sunday (Jul 05) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 3rd Jul) | 8ft (2.5m) 14s |
| Best Surf | 11PM (Mon 6th Jul) | 13ft (4.0m) 16s |
| Most Powerful | 8PM (Mon 6th Jul) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Big Rock over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, let's get into what's cookin' at Big Rock for the next couple of weeks.
First thing, the water's sitting at 67°, which is right where it should be for this time of year. No surprises there.
Now, you're gonna have to be patient. Friday the 3rd is a dud. There's some 8ft swell from the SW tryin' to show, but the period is short and the wind's all over the place. You'd be fightin' a losing battle. Leave the stick in the car.
Saturday the 4th is a tease. We've got a bigger, longer-period groundswell comin' in, with 10ft from the SW in the morning and a 17-second period. The wind is clean, and the energy is massive (4587), but the call is still marginal. It'll be powerful and a bit touchy. A solid option for the experienced crew lookin' for a challenge, but not the one for the average punter.
Sunday the 5th is a total write-off. Onshore winds and rain will turn it into a washing machine. Don't bother.
But hold up… Monday the 6th is the one. The standout day. We've got a big, clean, long-period groundswell from the SW. The morning is pumpin' at 11-12ft with a 15-second period and a combined energy of 5788, and by the afternoon it's rippin' at 13ft with a signal of 7326. The wind is light and cross-offshore, keeping it glassy and smooth. This is proper, powerful surf. It's a reef break, so with that long period, it's gonna hold up beautifully and spit out some perfect walls. This is for the experienced crew only – it's a solid day. Expect the lineup to have a few bodies, 'cause spots like this get crowded when they're good.
Tuesday the 7th is still excellent, still for the experts. 11ft from the SW with that same clean cross-off breeze. It'll be a fraction smaller than Monday, but still a top-tier session.
The swell eases up a bit through the 8th and 9th, but you're still lookin' at 10ft of clean, rideable surf on offer with favorable winds.
There's a quiet spell around the 10th, with the swell dropping to just 3-4ft. A bit of a lull before the next one hits.
Now, Saturday the 11th – mark your calendars for another pulse. This one's a beast. 15ft from the SW with a 17-second period. The combined energy is over 10,000 – that's huge. The wind is cross, so it won't be as perfect as the 6th, but it's gonna be a monster day for the big-wave chargers. Experts only. It's 8 days out, so keep an eye on it – it's lookin' promising but not locked in yet.
Sunday the 12th gives you a solid 10ft with a light offshore breeze. Clean conditions, but that's still a big, powerful wave for experienced folks only.
The following week sees the swell settle down, with heights from 4ft to 8ft. Some days have clean conditions, and on Tuesday the 14th, the afternoon goes glassy with a 6ft SW swell. That's a gorgeous little window for a clean sunset session.
The tail end of the outlook on the 18th looks like a complete loss with heavy rain and strong onshore winds. The whole last weekend looks like a mess.
So here's the bottom line: If you're experienced, Monday the 6th is your absolute best bet for the cleanest, biggest, most powerful swell of the window. The 11th is the one for the adrenaline junkies who love raw, heavy power. The middle days and that glassy afternoon on the 14th offer solid, clean waves for the intermediates and up. The first few days and the very end? Stay on the beach and have a cold one.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Sun morning. Very mild (max 18°C on Sat night, min 12°C on Fri night). Winds increasing (light winds from the E on Fri night, strong winds from the NNW by Sun morning). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Very mild (max 17°C on Tue afternoon, min 13°C on Mon night). Winds increasing (calm on Wed afternoon, fresh winds from the SW by Thu afternoon). | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Fri 10 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 17 | SW 16 | SW 15 | SW 14 | WSW 16 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | SW 16 | SW 15 | SW 14 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | SW 10 | SW 9 |
Wave Graph | |||||||||||||||||||||
2815 | 4587 | 3039 | 1568 | 821 | 1832 | 3313 | 5733 | 6963 | 6924 | 5998 | 4413 | 2577 | 4611 | 3983 | 3128 | 2553 | 1929 | 1173 | 2817 | 885 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:56AM0.99m | 11:24AM0.88m | 11:19AM0.77m | 4:47AM0.78m | 5:02AM0.84m | 5:36AM0.92m | 6:16AM0.99m | ||||||||||||||
Low Tide | 7:59PM0.48m | 8:12PM0.53m | 8:08PM0.57m | 6:31PM0.59m | 3:04PM0.51m | 3:22PM0.40m | 3:57PM0.31m | ||||||||||||||
— | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | |
5:22 | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:24 | — | — | 5:25 | |
mm | — | — | — | — | 7 | 10 | 2 | — | — | — | — | — | — | — | 1 | — | 4 | 4 | 2 | — | 1 |
Temp °C | 14 | 14 | 16 | 18 | 17 | 17 | 15 | 13 | 15 | 14 | 15 | 17 | 15 | 16 | 17 | 16 | 16 | 17 | 15 | 15 | 16 |
Feels °C | 11 | 8 | 10 | 11 | 10 | 12 | 9 | 8 | 11 | 10 | 14 | 15 | 12 | 16 | 17 | 15 | 14 | 12 | 7 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 17 | SW 16 | SW 15 | SW 14 | WSW 16 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | SW 16 | SW 15 | SW 14 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 14 | WSW 12 |
2815 | 4587 | 3039 | 1568 | 821 | 1832 | 3313 | 5733 | 6963 | 6924 | 5998 | 4413 | 2577 | 4611 | 3983 | 3128 | 2553 | 1929 | 1173 | 351 | 646 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | — | — | — | S 9 | WNW 7 | — | — | — | SE 6 | — | — | WSW 20 | — | — | — | — | — | WSW 16 | — | — |
156 | — | — | — | 2 | 273 | — | — | — | 35 | — | — | 165 | — | — | — | — | — | 263 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 6 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 40 | — | — | |
Wind waves Height (m) Direction Period (s) | NE 4 | NNE 5 | N 6 | N 6 | NW 7 | — | S 7 | S 6 | — | — | — | — | — | — | — | — | — | — | S 5 | SW 10 | SW 9 |
10 | 78 | 130 | 239 | 535 | — | 193 | 94 | — | — | — | — | — | — | — | — | — | — | 42 | 2817 | 885 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 165 | 44 | 144 | 159 | 159 | 89 | 1 | 1 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 2 | 251 | 688 | 569 | 1133 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Big Rock Surf forecast
The above surf forecast table for Big Rock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big Rock can be found by selecting the local surf guide option on the grey menu. Our Big Rock 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 (Big Rock) 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 Big Rock 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.
Big Rock is 85 km (53 miles) from the city of Bunbury. If you plan a holiday in Margaret River, look for hotels and other accommodation in Bunbury. Bunbury has rooms for a wide range of budgets as well as car hire and transport links.











