Seabrook Dunes and Beach Swell ForecastUnited StatesNHRockingham CountySeabrook Dunes and Beach1-Day3-Day5-Day Graph Plots Open in GraphsSwell Height and Direction Forecast NOAA WaveWatch IIISwell Period Forecast NOAA WaveWatch IIISeabrook Dunes and Beach swell forecast issued today at 1:12 pm. Next forecast at approx. 1:36 pm.Get an account to remove ads