Nantucket County Swell ForecastUnited StatesMANantucket County3.6ftSSWSiasconset3.6ft, SSW2.3ftSSEGreat Point2.3ft, SSECisco BeachCoatueDionisEsther IslandGreat PointJetties BeachMiacomet BeachMuskeget IslandQuidnetSankaty Head LighthouseSiasconsetSquamSurfside NantucketTom NeversTuckernuck IslandWauwinet