The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 05/22/2026 01:08:00 AM UTC

                        
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FZHW60 PHFO 211508
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
508 AM HST Thu May 21 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.

PHZ105-220015-
508 AM HST Thu May 21 2026

.Synopsis for the Hawaiian offshore waters...
A strengthening high pressure ridge building north of the
Hawaiian Islands will bring fresh to strong easterly trade winds
lasting into early next week.

$$

PHZ180-220015-
Hawaiian Offshore Waters-
508 AM HST Thu May 21 2026

.TODAY...E winds 20 to 30 kt. Seas 8 to 11 ft.
.TONIGHT...E winds 20 to 30 kt. Seas 8 to 11 ft.
.FRIDAY THROUGH SUNDAY...E winds 15 to 25 kt. Seas 8 to 11 ft.
.MONDAY...E winds 15 to 25 kt. Seas 7 to 9 ft.

$$