


Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
240 FZHW60 PHFO 090918 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1118 PM HST Wed Oct 8 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. PHZ105-091645- 1118 PM HST Wed Oct 8 2025 .Synopsis for the Hawaiian offshore waters... A surface trough over NE waters will lift NW and dissipate by the end of the week. High pressure will build far NE of the waters and drift SE and strengthen through the forecast period. $$ PHZ180-091645- Hawaiian Offshore Waters- 1118 PM HST Wed Oct 8 2025 .REST OF TONIGHT...Trough over NE waters moving W. NW Half, SE winds up to 10 kt. SE half, SE 10 to 15 kt highest far S waters. Seas 4 to 6 ft. Isolated thunderstorms far NW waters and far S waters. .THURSDAY THROUGH FRIDAY NIGHT...N of 20N, S winds up to 10 kt. S of 20N, E to SE winds 10 to 20 kt. Seas 5 to 6 ft. Isolated thunderstorms far NW waters and far S waters through Friday. .SATURDAY THROUGH MONDAY...E winds 10 to 20 kt highest S of 22N. Seas 6 to 8 ft. Isolated thunderstorms far NE waters Sunday through Monday. $$