Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
591 FZHW60 PHFO 080919 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1119 PM HST Sun Dec 7 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. PHZ105-081615- 1119 PM HST Sun Dec 7 2025 .Synopsis for the Hawaiian offshore waters... A weak ridge will remain just N of the Hawaiian Islands. An approaching cold front will weaken the ridge and decrease wind speeds through Tuesday. The cold front enters NW offshore waters by Wednesday, and moves over the central waters on Thursday, with NW to N winds behind it. $$ PHZ180-081615- Hawaiian Offshore Waters- 1119 PM HST Sun Dec 7 2025 .REST OF TONIGHT THROUGH MONDAY NIGHT...E to SE winds 10 to 20 kt. Seas 5 to 7 ft. .TUESDAY...SE to S winds up to 10 kt. Seas 6 to 9 ft. .WEDNESDAY...Cold front moving into NW waters. N of front, NW to N winds 10 to 20 kt. S of front, variable winds up to 10 kt. Seas 6 to 9 ft. Isolated thunderstorms NW waters. .THURSDAY...Cold front over central waters. N of front, NW to N winds 10 to 20 kt. S of front, variable winds up to 10 kt. Seas 6 to 9 ft. .FRIDAY...SE winds 10 to 15 kt. Seas 6 to 8 ft. $$