Nantucket County Swell ForecastUnited StatesMANantucket County3.6ftSESiasconset3.6ft, SE3ftESEGreat Point3ft, ESECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet