Coastal Waters Forecast
Issued by NWS

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309
FZHW51 PHFO 220110
CWFHI1

Generalized Statewide Coastal Waters Forecast for Hawaii
National Weather Service Honolulu HI
310 PM HST Thu Aug 21 2025

.Synopsis for Hawaiian coastal waters...
 A high pressure ridge north of the Hawaiian Islands will keep
fresh to locally strong trade winds blowing across the region
into early next week.

$$

Hawaiian waters within 40 nautical miles including the channels-

...SMALL CRAFT ADVISORY THROUGH SATURDAY AFTERNOON FOR MAALAEA
BAY...THE PAILOLO AND ALENUIHAHA CHANNELS AND WATERS SOUTH OF THE
BIG ISLAND...

.TONIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave
Detail: East 5 feet at 6 seconds. Isolated showers.
.FRIDAY...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave
Detail: East 5 feet at 6 seconds. Isolated showers.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave
Detail: East 5 feet at 6 seconds. Isolated showers.
.SATURDAY...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave
Detail: East 5 feet at 7 seconds. Isolated showers.
.SATURDAY NIGHT...East winds to 15 knots to Kauai...east 20 to
25 knots elsewhere. Seas 6 to 9 feet. Isolated showers.
.SUNDAY...East winds 10 to 15 knots to Kauai...east 20 to
25 knots elsewhere. Seas 5 to 8 feet. Isolated showers.
.SUNDAY NIGHT...East winds to 15 knots to Kauai...east 20 to
25 knots elsewhere. Seas 5 to 8 feet. Isolated showers.
.MONDAY...winds east northeast winds 20 to 25 knots. Seas 5 to
7 feet. Isolated showers.
.TUESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Isolated
showers.

$$