905
FZHW60 PHFO 220316
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
516 PM HST Mon Jul 21 2025

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.

PHZ105-221030-
516 PM HST Mon Jul 21 2025

.Synopsis for the Hawaiian offshore waters...
Surface high pressure ridge N of the Hawaiian Islands will
continue to produce E trade winds. Isolated thunderstorms are
possible over the far NW waters through Tuesday night due to a
lingering upper level trough.

$$

PHZ180-221030-
Hawaiian Offshore Waters-
516 PM HST Mon Jul 21 2025

.TONIGHT THROUGH TUESDAY NIGHT...NW waters, E winds 10 to 20 kt.
SE waters, E winds 15 to 25 kt. Seas 6 to 8 ft. Isolated
thunderstorms far NW waters.
.WEDNESDAY THROUGH SATURDAY...NW waters, E winds 10 to 20 kt. SE
waters, E winds 15 to 25 kt. Seas 6 to 9 ft, subsiding to 6 to
7 ft on Saturday.

$$