Nantucket County Swell ForecastUnited StatesMANantucket County4.6ftSSWSiasconset4.6ft, SSW3.6ftSSWGreat Point3.6ft, SSWCisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet