Nantucket County Swell ForecastUnited StatesMANantucket County7.9ftSSiasconset7.9ft, S5.2ftSEGreat Point5.2ft, SECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet