Nantucket County Swell ForecastUnited StatesMANantucket County7.5ftSWSiasconset7.5ft, SW5.2ftWSWGreat Point5.2ft, WSWCisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet