FZHW51 PHFO 160108 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 308 PM HST Wed Apr 15 2026 .Synopsis for Hawaiian coastal waters... Trough remains over the NW waters through Thursday in maintenance of isolated thunderstorms. High pressure then builds N of the area into the weekend as another trough develops near or just W of the NW waters. $$ Hawaiian waters within 40 nautical miles including the channels- .TONIGHT...East northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 3 feet at 7 seconds and south 3 feet at 13 seconds. A slight chance of showers. .THURSDAY...East northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 3 feet at 7 seconds. A slight chance of showers. .THURSDAY NIGHT...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East southeast 3 feet at 6 seconds. A slight chance of showers. .FRIDAY...East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East 3 feet at 6 seconds. A slight chance of showers. .FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. A chance of showers. .SATURDAY NIGHT...East northeast winds 20 to 25 knots Alenuihaha Channel...east 10 to 15 knots elsewhere. Seas 4 to 6 feet. A slight chance of showers. .SUNDAY...East winds 10 to 15 knots, rising to 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .MONDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. A slight chance of showers. $$