Nantucket County Swell ForecastUnited StatesMANantucket County3.9ftSSiasconset3.9ft, S2.6ftSSEGreat Point2.6ft, SSECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet