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Big Rock Surf Forecast
/ WA – Margaret River (57 breaks) / Western Australia (159 breaks) /
Big Rock surfForecast / WA – Margaret River / Australia
12 Day Weather and Surf, issued 7 am Tuesday 15 Jul 2025 AWST
Best Forecast Surf Conditions for Big Rock this week:
The surf forecast for Big Rock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 16) at 8AM. The primary swell is predicted to be 5.0m and 16s period with a secondary swell of 2.1m and 20s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Big Rock in the next 12 days are 5.5m 19s and forecast to arrive on Wednesday (Jul 16) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 16th Jul) | 16ft (5.0m) 16s |
| Best Surf | 8AM (Wed 16th Jul) | 16ft (5.0m) 16s |
| Most Powerful | 11AM (Wed 16th Jul) | 18ft (5.5m) 19s |
Table - best surf conditions forecast for Big Rock over the next 12 days.
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||||||||||||
| 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) (?) | 13 | 13 | 16 | 19 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 14 | 14 | 9 | 14 | 15 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 14 | 18 | 16 | 15 | 14 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 3982 | 5663 | 11973 | 20452 | 15732 | 18081 | 14397 | 10679 | 12305 | 15465 | 12855 | 9071 | 5528 | 4432 | 3818 | 17133 | 17575 | 12388 | 7400 | 6156 | 5095 | 7310 | 7523 | 5549 | 5129 | 6551 | 5623 | 3059 | 2608 | 2081 | 2109 | 3163 | 5072 | 8546 | 9272 | 7996 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- off | cross | cross- on | on | on | cross- on | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- on | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- off |
High Tide / height (m) | 11:46AM 0.87 | 4:44AM 0.69 | 12:05PM 0.73 | 4:11AM 0.73 | 4:34AM 0.79 | 5:12AM 0.86 | 5:58AM 0.94 | 6:44AM 1.00 | 7:29AM 1.05 | 8:11AM 1.08 | 8:50AM 1.08 | 9:24AM 1.05 | 9:54AM 0.99 | |||||||||||||||||||||||
Low Tide / height (m) | 8:18PM 0.51 | 6:10AM 0.69 | 8:08PM 0.57 | 4:33PM 0.58 | 2:46PM 0.46 | 3:17PM 0.35 | 3:56PM 0.27 | 4:35PM 0.22 | 5:14PM 0.21 | 5:51PM 0.22 | 6:25PM 0.26 | 6:53PM 0.32 | 7:10PM 0.38 | |||||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||||||||||||
| Sunrise | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:20 | - | - | 7:20 | - | - | 7:20 | - | - | 7:18 | - | - | 7:18 | - | - | 7:18 | - | - | 7:18 | - | - | 7:16 | - | - |
| Sunset | - | 5:28 | - | - | 5:29 | - | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:31 | - | - | 5:31 | - | - | 5:32 | - | - | 5:34 | - | - | 5:34 | - | - | 5:35 | - | - | 5:36 | - |
 |  |  |  | |  |  | |  | | |  | | |  |  | |  | | | | | |  | | | | |  | | | | | | | | |
Rain (mm) | 1 | 2 | 4 | - | - | - | - | - | 1 | 2 | 1 | - | - | 1 | 11 | 6 | 7 | 6 | - | - | 3 | 3 | 9 | 13 | 4 | 2 | 3 | - | - | - | - | 3 | 24 | - | - | - |
| Temp. °C | 17 | 18 | 17 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 15 | 14 | 14 | 16 | 17 | 12 | 11 | 12 | 13 | 14 | 16 | 16 | 16 | 15 | 11 | 11 | 13 | 14 | 14 | 13 | 16 | 17 | 18 | 17 | 17 | 16 |
| Feels °C (?) | 12 | 11 | 9 | 8 | 9 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 10 | 10 | 6 | -2 | -3 | 2 | 6 | 7 | 7 | 7 | 6 | 3 | -2 | 0 | 6 | 8 | 11 | 11 | 10 | 11 | 12 | 13 | 13 | 11 |
Short Range Forecast: Light rain (total 8mm), mostly falling on Tue morning. Very mild (max 18°C on Tue afternoon, min 15°C on Tue night). Winds decreasing (strong winds from the W on Tue night, light winds from the WSW by Wed night). | Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Sat night. Very mild (max 17°C on Sat night, min 10°C on Sun morning). Winds increasing (calm on Fri night, gales from the SW by Sun afternoon). | Days 6-9 Weather Summary Heavy rain (total 37mm), heaviest during Tue afternoon. Very mild (max 16°C on Mon night, min 10°C on Wed morning). Winds decreasing (near gales from the SSW on Tue night, moderate winds from the S by Wed night). | Long Range Forecast: Heavy rain (total 27mm), heaviest during Fri night. Very mild (max 18°C on Fri night, min 13°C on Thu night). Winds increasing (light winds from the SE on Thu night, strong winds from the NNW by Fri night). | |||||||||||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for WA - Margaret River
Wind reports 21 km away suggest it is still onshore at Big Rock (light winds from the W at Witchcliffe). not gfswave
21 km away, 58 min ago
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 Big Rock 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 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 12 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.
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