Margaret River Mouth Swell ForecastAustraliaWASouth WestMargaret River Mouth1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIMargaret River Mouth swell forecast issued yesterday at 10:18 pm. Next forecast at approx. 10:18 pm.Get WillyWeather+ to remove ads