Black Rock Passage Swell ForecastAustraliaWAGascoyneBlack Rock Passage1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIBlack Rock Passage swell forecast issued today at 10:27 pm. Next forecast at approx. 10:27 pm.Get an account to remove ads