The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 08/14/2026 01:15:00 AM UTC
                        
731
FZHW60 PHFO 131515
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
515 AM HST Thu Aug 13 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.

PHZ105-132215-
515 AM HST Thu Aug 13 2026

.Synopsis for the Hawaiian offshore waters...
High pressure to the far NE will slowly drift into position N of
the Hawaiian Islands into the weekend, producing moderate to
locally strong trade winds across the region.

Tropical Storm Lala was located near 15.2N 145.5W at 13/1500Z
moving west or 280 degrees at 9 kt. The tropical storm advances
toward Hawaii, entering the offshore waters on Friday and
traversing south of the islands through the weekend.

FORECAST POSITIONS AND MAX WINDS

INIT  13/1500Z 15.2N 145.5W   35 KT  40 MPH
 12H  14/0000Z 15.9N 146.9W   40 KT  45 MPH
 24H  14/1200Z 16.6N 149.2W   45 KT  50 MPH
 36H  15/0000Z 17.4N 151.7W   50 KT  60 MPH
 48H  15/1200Z 18.0N 154.1W   60 KT  70 MPH
 60H  16/0000Z 18.7N 156.3W   60 KT  70 MPH
 72H  16/1200Z 19.6N 159.0W   55 KT  65 MPH
 96H  17/1200Z 21.0N 164.3W   60 KT  70 MPH
120H  18/1200Z 22.6N 169.5W   70 KT  80 MPH

$$

PHZ180-132215-
Hawaiian Offshore Waters-
515 AM HST Thu Aug 13 2026

...TROPICAL STORM WARNING IN EFFECT...

.TODAY...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.TONIGHT...E winds 15 to 25 kt. Seas 7 to 11 ft.
.FRIDAY...Tropical storm conditions and seas 12 to 16 ft S of 20N
and E of 155W. Elsewhere, NE winds 15 to 25 kt and seas 7 to 14
ft. Isolated thunderstorms SE Waters.
.FRIDAY NIGHT...Tropical storm conditions and seas 12 to 18 ft S
of 21N and E of 158W. Elsewhere, NE winds 15 to 25 kt and seas 8
to 14 ft. Isolated thunderstorms SE Waters.
.SATURDAY...Tropical storm conditions and seas 12 to 20 ft S of
22N. Elsewhere, E winds 15 to 25 kt and seas 8 to 12 ft. Isolated
thunderstorms S of 22N.
.SUNDAY...Tropical storm conditions possible W of 157W.
Elsewhere, E winds 15 to 25 kt. Seas 6 to 12 ft. Isolated
thunderstorms S of 24N.
.MONDAY...Tropical storm conditions possible W of 162W.
Elsewhere, E winds 15 to 25 kt. Seas 6 to 10 ft. Isolated
thunderstorms NW Half.

$$