Nantucket County Swell ForecastUnited StatesMANantucket County3ftSESiasconset3ft, SE2.6ftESEGreat Point2.6ft, ESECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet