


Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
453 FZHW60 PHFO 172138 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1138 AM HST Fri Oct 17 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. PHZ105-180415- 1138 AM HST Fri Oct 17 2025 .Synopsis for the Hawaiian offshore waters... A broad trough remains over the W offshore waters for the next couple of days. An upper low will drift over the NW half of the area through the weekend, producing a few thunderstorms. $$ PHZ180-180415- Hawaiian Offshore Waters- 1138 AM HST Fri Oct 17 2025 .THIS AFTERNOON THROUGH TONIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft, highest N waters. Isolated thunderstorms NW waters. .SATURDAY THROUGH SUNDAY...E winds 10 to 20 kt. Seas 6 to 9 ft. Isolated thunderstorms NW Half. .MONDAY THROUGH TUESDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. $$