Nantucket County Swell ForecastUnited StatesMANantucket County4.3ftSSWSiasconset4.3ft, SSW3ftSWGreat Point3ft, SWCisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet