Offshore Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
502 FZHW60 PHFO 070959 OFFHFO Offshore Waters Forecast for Hawaii National Weather Service Honolulu HI 1159 PM HST Sun Sep 6 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. PHZ105-071630- 1159 PM HST Sun Sep 6 2026 .Synopsis for the Hawaiian offshore waters... Surface high pressure will remain far N of the waters through the forecast period. At 1100 PM, Hurricane Lowell was centered at 16.5N 163.2W and moving NNE at 9 kts. Hurricane conditions are expected for the W offshore waters tonight into Tuesday. Post- Tropical Cyclone Karina will remain NE of the offshore waters and dissipate on Monday. LOWELL FORECAST POSITIONS 800 AM HST MONDAY 18.3N 162.4W 800 PM HST MONDAY 21.0N 161.6W 800 AM HST TUESDAY 23.8N 161.3W 800 PM HST TUESDAY 26.0N 161.5W 800 AM HST WEDNESDAY 27.3N 162.9W 800 PM HST WEDNESDAY 27.7N 165.0W 800 PM HST THURSDAY 27.4N 169.4W 800 PM HST FRIDAY 27.7N 171.6W 800 PM HST SATURDAY 29.5N 173.5W 800 PM HST SUNDAY 31.5N 174.5W $$ PHZ180-071630- Hawaiian Offshore Waters- 1159 PM HST Sun Sep 6 2026 ...HURRICANE WARNING IN EFFECT... .REST OF TONIGHT...Hurricane conditions W of 159W and S of 21N. Elsewhere, E to SE winds 15 to 25 kt. Seas 7 to 12 ft. Isolated thunderstorms S of 21N. .MONDAY...Hurricane conditions expected W of 158W and S of 24N. N of 24N, E winds 20 to 30 kt. Elsewhere, E to SE winds 15 to 25 kt. Seas 9 to 14 ft, building to 9 to 19 ft in the afternoon. Isolated thunderstorms. .MONDAY NIGHT...Hurricane conditions expected W of 158W. Central waters, SE to S winds 15 to 25 kt. Elsewhere, SE to S winds up to 15 kt. Seas 10 to 20 ft. Isolated thunderstorms E of 160W, scattered thunderstorms W of 160W. .TUESDAY...Hurricane conditions expected W of 158W and N of 21N. E of 158W, SE to S winds 10 to 20 kt. Elsewhere, SW to W winds 15 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 10 to 20 ft. Scattered thunderstorms W of 158W. .TUESDAY NIGHT...Tropical storm conditions possible W of 159W and N of 23N. E of 159W, SE winds 10 to 20 kt. Elsewhere, SW to W winds up to 15 kt. Seas 7 to 15 ft. Isolated thunderstorms NW Half. .WEDNESDAY...W of 160W, SE to S winds up to 15 kt. E of 160W, E winds 10 to 20 kt. Seas 6 to 12 ft. .THURSDAY AND FRIDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. $$