FZHW60 PHFO 151518
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
518 AM HST Wed Apr 15 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.

PHZ105-152230-
518 AM HST Wed Apr 15 2026

.Synopsis for the Hawaiian offshore waters...
A surface trough will remain over the NW waters through Thursday
and support isolated thunderstorms, then dissipate. High pressure
then builds N of the area Friday through the weekend as yet
another trough develops near or just W of the NW waters.

$$

PHZ180-152230-
Hawaiian Offshore Waters-
518 AM HST Wed Apr 15 2026

.TODAY...NW Half, SE winds 10 to 15 kt, becoming E late in the
afternoon. SE Half, E winds 10 to 20 kt. Seas 6 ft. Isolated
thunderstorms NW Half.
.TONIGHT...N of 20N, E winds 10 to 15 kt, diminishing to up to
10 kt after midnight. Elsewhere, E winds 10 to 20 kt. Seas 6 ft.
Isolated thunderstorms NW Half.
.THURSDAY...NW Half, NE winds 10 to 15 kt, diminishing to up to
10 kt early in the afternoon, then, rising to 10 to 15 kt late in
the afternoon. SE Half, E winds 10 to 15 kt. Seas 6 ft. Isolated
thunderstorms NW Half.
.THURSDAY NIGHT...E winds 10 to 20 kt. Seas 6 ft. Isolated
thunderstorms NW Half.
.FRIDAY AND SATURDAY...E winds 10 to 20 kt. Seas 6 ft. Isolated
thunderstorms NW Half.
.SUNDAY...E winds 10 to 20 kt. Seas 6 to 7 ft. Isolated
thunderstorms far W waters.

$$