The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 09/23/2026 01:06:00 AM UTC
                        
476
FZHW60 PHFO 221506
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
506 AM HST Tue Sep 22 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.

PHZ105-222230-
506 AM HST Tue Sep 22 2026

.Synopsis for the Hawaiian offshore waters...
A trough and weak low, which may develop into a tropical cyclone,
will continue to approach from the E and SE and bring renewed
thunderstorm potential through Friday. Moderate to strong trades
continue through most of the week before strengthening heading
into the weekend, depending on the potential tropical
development.

$$

PHZ180-222230-
Hawaiian Offshore Waters-
506 AM HST Tue Sep 22 2026

.TODAY...E winds 10 to 20 kt NW Half, E 15 to 25 kt SE Half.
Seas 6 to 12 ft. Isolated thunderstorms E of 160W.
.TONIGHT...E of 160W, E winds 15 to 25 kt. W of 160W, E winds 10
to 20 kt. Seas 6 to 12 ft. Isolated thunderstorms E of 160W.
.WEDNESDAY...E of 160W, E winds 15 to 25 kt. W of 160W, E winds
15 to 25 kt, becoming NE 10 to 20 kt in the afternoon. Seas 6 to
11 ft. Isolated thunderstorms E of 160W.
.WEDNESDAY NIGHT AND THURSDAY...E winds 15 to 25 kt. Seas 6 to 10
ft. Isolated thunderstorms SE Waters.
.FRIDAY AND SATURDAY...E winds 20 to 30 kt. Seas 7 to 11 ft.
Isolated thunderstorms S of 22N.

$$