The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 08/18/2026 07:26:00 AM UTC
                        
265
FZHW60 PHFO 172126
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
1126 AM HST Mon Aug 17 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.

PHZ105-180430-
1126 AM HST Mon Aug 17 2026

.Synopsis for the Hawaiian offshore waters...
The center of Tropical Storm Lala has exited the far NW offshore
waters this morning, located near 20.4N 164.3W at 11 AM HST and
moving west at 9 kt. The Tropical Storm Warning remains in effect
as tropical storm conditions remain possible in the NW waters
today. Trade winds will return by Tuesday as Lala continues to
move west away from the area.

LALA FORECAST POSITIONS
800 PM HST MONDAY    20.4N 165.8W
800 AM HST TUESDAY   20.5N 167.6W
800 PM HST TUESDAY   20.9N 169.1W
800 AM HST WEDNESDAY 21.7N 170.5W
800 PM HST WEDNESDAY 22.8N 171.6W
800 AM HST THURSDAY  24.1N 172.2W
800 AM HST FRIDAY    26.5N 171.6W

$$

PHZ180-180430-
Hawaiian Offshore Waters-
1126 AM HST Mon Aug 17 2026

...TROPICAL STORM WARNING IN EFFECT...

.THIS AFTERNOON...NW Half, E winds 40 to 50 kt, extending up to 90
nm N semicircle of Tropical Storm Lala, diminishing to 25 to 35
kt late in the afternoon. SE Half, E winds 10 to 20 kt. Seas 6 to
11 ft. Scattered thunderstorms NW Half.
.TONIGHT...E winds 20 to 30 kt NW Half, E 10 to 20 kt SE Half.
Seas 6 to 9 ft. Isolated thunderstorms S of 24N.
.TUESDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. Isolated
thunderstorms S of 24N.
.TUESDAY NIGHT THROUGH FRIDAY...E winds 10 to 20 kt. Seas 6 to 7
ft.

$$