Nantucket County Swell ForecastUnited StatesMANantucket County3.9ftESESiasconset3.9ft, ESE3.6ftEGreat Point3.6ft, ECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet