Perth FAD4 (offshore) Swell ForecastAustraliaWAWheatbeltPerth FAD4 (offshore)1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIPerth FAD4 (offshore) swell forecast issued on 14 May.Get an account to remove ads