FZHW60 PHFO 191500
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
500 AM HST Tue May 19 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.

PHZ105-192315-
500 AM HST Tue May 19 2026

.Synopsis for the Hawaiian offshore waters...
High pressure far NE of the state will strengthen and expand
towards the middle of the week. This will result in widespread 
strong trades by Thursday.   

$$

PHZ180-192315-
Hawaiian Offshore Waters-
500 AM HST Tue May 19 2026

.TODAY...E winds 10 to 20 kt. Seas 7 to 9 ft. 
.TONIGHT THROUGH WEDNESDAY NIGHT...E winds 15 to 25 kt. Seas 7 to
10 ft, higher E of 155W.
.THURSDAY...E winds 20 to 30 kt. Seas 9 to 12 ft. 
.FRIDAY AND SATURDAY...NE winds 15 to 25 kt. Seas 8 to 12 ft.  

$$