Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
937 FZHW60 PHFO 182127 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1127 AM HST Tue Nov 18 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. PHZ105-190430- 1127 AM HST Tue Nov 18 2025 .Synopsis for the Hawaiian offshore waters... A surface ridge NE of the area will weaken today as a front enters far NW waters and a weak briefly trough develops over central waters. The front will stall over far NW waters tonight then retreat N of the area on Wednesday as strong surface high pressure passes N of the region. The high will move slowly to the E through Saturday. $$ PHZ180-190430- Hawaiian Offshore Waters- 1127 AM HST Tue Nov 18 2025 .THIS AFTERNOON...Front entering NW waters. N of 19N W of 156W, NE to E winds 10 to 15 kt, except 15 to 30 kt along front over far NW waters. N of 19N E of 156W, E to SE winds 10 to 15 kt. S of 19N, E winds 15 to 20 kt. Seas 5 to 7 ft. Isolated thunderstorms. .TONIGHT...Front stalled over far NW waters. E winds 15 to 25 kt, except 20 to 30 kt far NW waters along front. Seas 6 to 8 ft, except seas 8 to 12 ft far NW waters. Isolated thunderstorms. .WEDNESDAY AND WEDNESDAY NIGHT...E winds 15 to 25 kt. Seas 7 to 12 ft. Isolated thunderstorms. .THURSDAY...E winds 15 to 25 kt. Seas 8 to 11 ft. Isolated thunderstorms far SW waters. .FRIDAY...E winds 10 to 20 kt, strongest SE half. Seas 7 to 10 ft. .SATURDAY...E winds 10 to 15 kt. Seas 7 to 10 ft. $$