


Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
835 FZHW60 PHFO 210308 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 508 PM HST Wed Aug 20 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. PHZ105-211100- 508 PM HST Wed Aug 20 2025 .Synopsis for the Hawaiian offshore waters... High pressure far N of the area will remain nearly stationary through the rest of this week. A weak trough passing S of the state could bring some unsettled weather late Thursday into Friday with possible thunderstorms across the SE waters. $$ PHZ180-211100- Hawaiian Offshore Waters- 508 PM HST Wed Aug 20 2025 .TONIGHT...E winds 10 to 20 kt. Seas 6 to 7 ft. .THURSDAY...E winds 10 to 20 kt. Seas 6 to 7 ft. .THURSDAY NIGHT AND FRIDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. Isolated thunderstorms SE waters. .FRIDAY NIGHT AND SATURDAY...E winds 15 to 25 kt E of 160W, E 10 to 15 kt W of 160W. Seas 6 to 8 ft. Isolated thunderstorms SE waters Friday night. .SUNDAY AND MONDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. $$