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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 1 pm Friday 15 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
21.2° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Big Rock today?
The current surf forecast for Big Rock at 7PM is: 4.0m 15s primary swell from a Southwest direction (forecast issued at 01:00pm May 15). The wind direction is predicted to be cross-shore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 13ft (4.0m) | 14s |
| Afternoon (15 May) | 13ft (4.0m) | 15s |
| Evening (15 May) | 13ft (4.0m) | 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 4mm), mostly falling on Sat night. Very mild (max 18°C on Sat night, min 15°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 14 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | |
6751 | 7161 | 6902 | 6019 | 5505 | 4748 | 3901 | 3160 | 2830 | 2356 | 1985 | 1659 | 1513 | 1488 | 1463 | 1413 | 1328 | 1351 | 1226 | 1127 | 1127 | 1035 | 1072 | 1053 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | |
High Tide | 8:23AM0.99m | 8:46AM1.06m | 9:12AM1.11m | |||||||||||||||||||||
Low Tide | 4:53PM0.34m | 5:46PM0.30m | 6:44PM0.28m | |||||||||||||||||||||
 | |  |  |  | | | | |  | |  |  | | |  | | | | | | | | | |
 | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — |
 | — | — | 5:27 | — | — | — | — | — | — | — | 5:27 | — | — | — | — | — | — | — | 5:25 | — | — | — | — | 5:24 |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 17 | 17 | 18 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 16 |
9 | 11 | 12 | 12 | 13 | 12 | 13 | 13 | 14 | 14 | 14 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 |
 kJ | 6751 | 7161 | 6902 | 6019 | 5505 | 4748 | 3901 | 3160 | 2830 | 2356 | 1985 | 1659 | 1513 | 1488 | 1463 | 1413 | 1328 | 1351 | 1226 | 1127 | 1127 | 1035 | 1072 | 1053 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 24 | W 24 | W 24 | SW 22 | WSW 21 | WSW 21 | WSW 21 | WSW 20 | WSW 20 | WSW 20 | WSW 19 | WSW 18 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 11 | 11 | 11 | 19 | 45 | 90 | 89 | 216 | 253 | 253 | 319 | 497 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 19 | WSW 19 | WSW 18 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 332 | 398 | 596 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 0 |
Best forecast wave conditions in Margaret River | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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