The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 10/21/2026 12:46:00 AM UTC
                        
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FZHW60 PHFO 201446
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
446 AM HST Tue Oct 20 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.

PHZ105-210300-
446 AM HST Tue Oct 20 2026

.Synopsis for the Hawaiian offshore waters...
High pressure will hold far N of Hawaii today, then move E and
weaken through Wednesday. A low and cold front will move N of the
area Thursday and Friday.

$$

PHZ180-210300-
Hawaiian Offshore Waters-
446 AM HST Tue Oct 20 2026

.TODAY AND TONIGHT...E winds 15 to 25 kt. Seas 7 to 9 ft.
Isolated thunderstorms NW Half.
.WEDNESDAY...E winds 10 to 20 kt. Seas 6 to 8 ft.
.THURSDAY...N of 22N, E winds 10 kt or less. S of 22N, E winds 10
to 15 kt. Seas 5 to 7 ft. Isolated thunderstorms far SE and far
NE waters.
.FRIDAY...N OF 23N, E to NE winds 10 kt or less. S of 23N, E to
NE winds 10 to 20 kt. Seas 5 to 7 ft. Isolated thunderstorms far
SE waters.
.SATURDAY...NE winds 10 to 20 kt. Seas 6 to 8 ft. Isolated
thunderstorms far SE waters.

$$