Nantucket County Swell ForecastUnited StatesMANantucket County4.6ftESESiasconset4.6ft, ESE4.6ftEGreat Point4.6ft, ECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet