


Coastal Waters Forecast
Issued by NWS
Issued by NWS
273 FZHW51 PHFO 210118 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 318 PM HST Wed Aug 20 2025 .Synopsis for Hawaiian coastal waters... High pressure north of the main Hawaiian Islands will keep fresh to locally strong trade winds blowing across the region into early next week. $$ Hawaiian waters within 40 nautical miles including the channels- ...SMALL CRAFT ADVISORY THROUGH SATURDAY AFTERNOON FOR MAALAEA BAY...THE PAILOLO AND ALENUIHAHA CHANNELS AND WATERS SOUTH OF THE BIG ISLAND... .TONIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet. Isolated showers. .THURSDAY...East winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 14 seconds. Isolated showers. .THURSDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 13 seconds. Isolated showers. .FRIDAY...East winds to 15 knots to Kauai...east 20 to 25 knots elsewhere. Seas 5 to 7 feet. Wave Detail: East 3 feet at 7 seconds and south 3 feet at 13 seconds. Isolated showers. .FRIDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet. Isolated showers. .SATURDAY...East winds to 15 knots near Kauai and Oahu...east 20 to 25 knots elsewhere. Seas 5 to 7 feet. Isolated showers. .SATURDAY NIGHT...East winds to 15 knots to Kauai...east 20 to 25 knots elsewhere. Seas 5 to 7 feet. Isolated showers. .SUNDAY...to Kauai, east winds 10 to 15 knots. Elsewhere, east winds 20 to 25 knots, easing to 15 to 20 knots. Seas 5 to 7 feet. Isolated showers. .MONDAY...East winds 15 to 20 knots. Seas 5 to 7 feet. Isolated showers. $$