Nantucket County Swell ForecastUnited StatesMANantucket County4.9ftSSiasconset4.9ft, S3ftSEGreat Point3ft, SECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet