FZHW60 PHFO 240931 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1131 PM HST Thu Oct 23 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. PHZ105-241645- 1131 PM HST Thu Oct 23 2025 .Synopsis for the Hawaiian offshore waters... High pressure centered N of Hawaii will move E through Saturday. This will result in fresh trades through Saturday night. The high will weaken and drift further E Sunday and Monday as trades weaken back to moderate speeds. Another surface high will develop NW of the area Tuesday. $$ PHZ180-241645- Hawaiian Offshore Waters- 1131 PM HST Thu Oct 23 2025 .REST OF TONIGHT...E winds 15 to 25 kt. Seas 7 to 9 ft. .FRIDAY THROUGH SATURDAY NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. Scattered to isolated thunderstorms S of 18N. .SUNDAY...E winds 10 to 20 kt. Seas 7 to 9 ft. Isolated thunderstorms S of 22N W of 155W. .MONDAY...E winds 10 to 15 kt. Seas 6 to 8 ft. Isolated thunderstorms S of 23S W of 160W. .TUESDAY...E winds 10 to 15 kt. Seas 5 to 7 ft. Isolated thunderstorms over far NW and SW waters. $$