FZHW60 PHFO 031501 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 501 AM HST Thu Jul 3 2025 Hawaiian offshore waters beyond 40 nautical miles out to 240 nautical miles including the portion of the Papahanaumokuakea Marine National Monument east of French Frigate Shoals Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. PHZ105-040015- 501 AM HST Thu Jul 3 2025 .Synopsis for the Hawaiian offshore waters... High pressure will gradually build far N of the state as the weak trough N of the state dissipates. The high will then strengthen Friday into early next week with strong trade winds expected. $$ PHZ180-040015- Hawaiian Offshore Waters- 501 AM HST Thu Jul 3 2025 .TODAY AND TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .FRIDAY...E winds 15 to 25 kt. Seas 5 to 7 ft. .FRIDAY NIGHT THROUGH MONDAY...E winds 15 to 25 kt. Seas 6 to 8 ft, becoming 7 to 10 feet Monday. $$