Granite Island Swell ForecastAustraliaSAFleurieu PeninsulaGranite Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIGranite Island swell forecast issued today at 12:44 pm. Next forecast at approx. 12:44 pm.Get WillyWeather+ to remove ads