- Forecast
- Maps
- Live
- Weather State
- Spot Information
Big Rock Surf Forecast
/ WA – Margaret River (57 breaks) / Western Australia (159 breaks) /
Surf Forecasts:
Big Rock surfForecast / WA – Margaret River / Australia
48hr Weather and Surf, issued 7 am Tuesday 12 May 2026 AWSTForecast update in hr min s Forecast update imminent
Big Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Rock sea temperature is
20.9° C
(Which is slightly warmer than usual)How big are the waves at Big Rock today?
The current surf forecast for Big Rock at 2PM is: 2.5m 15s primary swell from a West-southwest direction and 1.4m 16s secondary swell from a West-southwest direction, 0.8m 5s secondary swell from a North-northwest direction (forecast issued at 07:00am May 12). The wind direction is predicted to be cross-shore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 7.5ft (2.3m) | 12s |
| Afternoon (12 May) | 8ft (2.5m) | 15s |
| Evening (12 May) | 11ft (3.5m) | 14s |
Table - waves today at Big Rock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 7mm), mostly falling on Thu night. Warm (max 21°C on Tue morning, min 15°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 12 | WSW 12 | WSW 13 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 14 | SW 14 | |
1194 | 1338 | 1844 | 3134 | 3288 | 4314 | 6019 | 7258 | 7592 | 7543 | 7244 | 6868 | 7404 | 6816 | 6005 | 5447 | 5049 | 4336 | 3861 | 3365 | 3136 | 3198 | 4805 | 5668 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | cross | cross | cross-on | cross-on | on | on | on | on | on | on | cross-on | |
High Tide | 8:08AM0.81m | 8:03PM0.71m | 7:59AM0.85m | 9:43PM0.69m | 8:06AM0.92m | |||||||||||||||||||
Low Tide | 2:45PM0.60m | 1:16AM0.60m | 3:21PM0.50m | 1:13AM0.65m | 4:04PM0.40m | |||||||||||||||||||
 |  | | | |  | | | |  |  |  | |  |  | | | | | | | | | | |
 | 7:01 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — | 7:03 |
 | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:29 | — | — | — | — | — | — | — | 5:28 | — | — | 5:27 |
— | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | 1 | 2 | |
Temp °C | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 19 | 20 | 20 | 21 | 20 | 20 | 17 | 16 | 16 | 16 | 15 | 16 | 16 | 16 | 17 | 17 | 17 |
18 | 18 | 17 | 17 | 19 | 18 | 18 | 16 | 17 | 16 | 16 | 15 | 15 | 13 | 12 | 13 | 12 | 10 | 11 | 10 | 11 | 12 | 12 | 11 | |
Swell 1 Height (m) Direction Period (s) | W 12 | WSW 12 | WSW 13 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 14 | SW 14 |
 kJ | 1194 | 1338 | 1844 | 3134 | 3288 | 4314 | 6019 | 7258 | 7592 | 7543 | 7244 | 6868 | 6547 | 6816 | 6005 | 5447 | 5049 | 4336 | 3861 | 3365 | 3136 | 3198 | 4805 | 5668 |
Swell 2 Height (m) Direction Period (s) | WSW 18 | WSW 17 | W 16 | WSW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 31 | 157 | 193 | 883 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 6 | NNW 6 | NNW 6 | NNW 5 | — | N 5 | — | — | NNW 4 | — | NW 5 | — | WSW 14 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 72 | 54 | 40 | 39 | — | 16 | — | — | 29 | — | 80 | — | 7404 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 53 | 53 | 53 | 202 | 53 | 86 | 86 | 86 | 86 | 179 | 202 | 251 | 251 | 20 | 20 | 2 | 2 | 88 | 2 | 2 | 359 | 89 | 89 | 359 |
Best forecast wave conditions in Margaret River | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
Nearest