Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
285 FZHW60 PHFO 120924 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1124 PM HST Tue Aug 11 2026 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. PHZ105-121630- 1124 PM HST Tue Aug 11 2026 .Synopsis for the Hawaiian offshore waters... High pressure to the far northeast will slowly drift into position north of the Hawaiian Islands into the weekend, producing moderate to locally strong trade winds across the region. A tropical cyclone is likely to develop SE of the area over the next couple of days and advance toward the Hawaii Region on Thursday, possibly entering the offshore waters by Friday. $$ PHZ180-121630- Hawaiian Offshore Waters- 1124 PM HST Tue Aug 11 2026 .REST OF TONIGHT...W of 160E, E winds 10 to 15 kt. Elsewhere E winds 10 to 20 kt. Seas 6 to 8 ft. .WEDNESDAY AND WEDNESDAY NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .THURSDAY AND THURSDAY NIGHT...NE winds 15 to 25 kt. Seas 6 to 11 ft. .FRIDAY...TROPICAL STORM CONDITIONS POSSIBLE...NW half, NE winds 15 to 25 kt. SE half, NE winds 20 to 45 kt. Seas 7 to 20 ft, highest far SE waters. .SATURDAY...TROPICAL STORM CONDITIONS POSSIBLE...NW half, NE winds 15 to 25 kt. SE half, NE winds 20 to 45 kt. Seas 7 to 24 ft, highest SE half. .SUNDAY...TROPICAL STORM CONDITIONS POSSIBLE...N of 20N, NE winds 20 to 40 kt. S of 20N, variable winds 10 to 20 kt. Seas 7 to 24 ft, highest N waters. $$