The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 08/17/2026 01:10:00 AM UTC
                        
293
FZHW60 PHFO 161510
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
510 AM HST Sun Aug 16 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.

PHZ105-162215-
510 AM HST Sun Aug 16 2026

.Synopsis for the Hawaiian offshore waters...
At 1500 UTC or 5 AM HST, Tropical Storm Lala was located at 20.2N
158.1W and was moving northwest at 12 kt. Trades return by Tuesday
as Lala moves W of the offshore waters.

 12H  17/0000Z 20.7N 160.2W   55 KT  65 MPH
 24H  17/1200Z 20.9N 162.8W   55 KT  65 MPH
 36H  18/0000Z 20.8N 165.0W   55 KT  65 MPH
 48H  18/1200Z 20.6N 167.0W   60 KT  70 MPH
 60H  19/0000Z 20.7N 168.9W   60 KT  70 MPH
 72H  19/1200Z 21.0N 170.8W   65 KT  75 MPH
 96H  20/1200Z 22.4N 174.0W   70 KT  80 MPH
120H  21/1200Z 23.5N 176.0W   75 KT  85 MPH


$$

PHZ180-162215-
Hawaiian Offshore Waters-
510 AM HST Sun Aug 16 2026

...TROPICAL STORM WARNING IN EFFECT...

.TODAY...NW Half, E winds 50 to 60 kt. SE Half, SE winds 30 to
40 kt becoming E 15 to 25 kt in the late morning and afternoon.
Seas 6 to 13 ft. Isolated thunderstorms S of 24N. Winds and seas
higher within 100 nm of Tropical Storm Lala.
.TONIGHT...NW half, E winds 45 to 55 kt. SE half, E winds 10 to
20 kt. Seas 6 to 12 ft. Isolated thunderstorms S of 24N. Winds
and seas higher within 100 nm of Tropical Storm Lala.
.MONDAY...NW Half, E winds 45 to 55 kt diminishing 20 to 30 kt.
SE Half, E winds 10 to 20 kt. Seas 6 to 9 ft. Isolated
thunderstorms S of 24N.
.MONDAY NIGHT AND TUESDAY...E winds 10 to 20 kt. Seas 6 to 7 ft.
Isolated thunderstorms S of 24N.
.WEDNESDAY AND THURSDAY...E winds 10 to 15 kt. Seas 6 ft or less.

$$