The Offshore Waters Forecast for Hawai`i.

Offshore Forecast Issued: 09/01/2026 07:28:00 PM UTC
                        
428
FZHW60 PHFO 010928
OFFHFO

Offshore Waters Forecast for Hawaii
National Weather Service Honolulu HI
1128 PM HST Mon Aug 31 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.

PHZ105-011630-
1128 PM HST Mon Aug 31 2026

.Synopsis for the Hawaiian offshore waters...
Surface high pressure will remain far N of the waters through the
forecast period. At 0900 UTC, Tropical Storm Lowell was located
at 13.1N 148.5W, moving W at 9 knots. The cyclone will continue W
and is forecast to strengthen into a hurricane as the center of
the cyclone passes just S of the offshore waters on Wednesday into
Thursday.

LOWELL FORECAST POSITIONS
800 AM HST TUESDAY   13.3N 149.9W
800 PM HST TUESDAY   13.5N 151.7W
800 AM HST WEDNESDAY 13.7N 153.7W
800 PM HST WEDNESDAY 14.0N 155.6W
800 AM HST THURSDAY  14.3N 157.5W
800 PM HST THURSDAY  14.6N 159.2W
800 PM HST FRIDAY    14.8N 161.9W
800 PM HST SATURDAY  15.2N 164.3W
800 PM HST SUNDAY    16.5N 165.8W
800 PM HST MONDAY    18.8N 166.2W

$$

PHZ180-011630-
Hawaiian Offshore Waters-
1128 PM HST Mon Aug 31 2026

...TROPICAL STORM WARNING...

.REST OF TONIGHT...NE to E winds 15 to 25 kt. Seas 7 to 8 ft.
.TUESDAY...NE to E winds 10 to 20 kt. Seas 7 to 9 ft. Isolated
thunderstorms far SE Waters.
.TUESDAY NIGHT...E winds 10 to 20 kt NW Half, NE 20 to 30 kt SE
Half. Seas 7 to 10 ft. Isolated thunderstorms far SE Waters.
.WEDNESDAY...Tropical storm conditions expected S of 17N.
Elsewhere, E winds 15 to 25 kt. Seas 7 to 12 ft. Isolated
thunderstorms S of 17N.
.WEDNESDAY NIGHT...Tropical storm conditions possible S of 18N.
Elsewhere, E winds 15 to 25 kt. Seas 7 to 13 ft. Isolated
thunderstorms S of 18N.
.THURSDAY...Tropical storm conditions possible S of 18N. Elsewhere,
E winds 15 to 25 kt. Seas 7 to 13 ft. Isolated thunderstorms S of
18N.
.FRIDAY...E winds 15 to 25 kt. Seas 8 to 11 ft.
.SATURDAY...E winds 15 to 25 kt NW half, NE to E winds 10 to 20 kt
SE half. Seas 8 to 10 ft.

$$