Cape Sir William Grant Swell ForecastAustraliaVICWestern DistrictCape Sir William Grant1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIICape Sir William Grant swell forecast issued today at 6:28 am. Next forecast at approx. 6:28 am.Get WillyWeather+ to remove ads