Plum Island Swell ForecastUnited StatesMAEssex CountyPlum Island1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIPlum Island swell forecast issued today at 7:46 am. Next forecast at approx. 7:46 am.Get an account to remove ads