FZHW60 PHFO 200906 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1106 PM HST Tue May 19 2026 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. PHZ105-201645- 1106 PM HST Tue May 19 2026 .Synopsis for the Hawaiian offshore waters... A strengthening high pressure ridge building north of the Hawaiian Islands will bring fresh to strong easterly trade winds into early next week. $$ PHZ180-201645- Hawaiian Offshore Waters- 1106 PM HST Tue May 19 2026 .REST OF TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WEDNESDAY AND WEDNESDAY NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .THURSDAY THROUGH SUNDAY...E winds 15 to 30 kt. Seas 8 to 11 ft. $$