037 FZHW51 PHFO 121321 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 321 AM HST Mon Aug 12 2019 .Synopsis for Hawaiian coastal waters... High pressure northeast of the state will keep light to moderate trade winds through Tuesday becoming stronger Wednesday through the end of the week. $$ Hawaiian waters within 40 nautical miles including the channels- .TODAY AND TONIGHT...East winds 15 to 20 knots. Wind waves 4 to 6 feet. Mixed swell south 3 feet and west building to 3 feet in the afternoon. Isolated showers. .TUESDAY AND TUESDAY NIGHT...East winds 15 to 20 knots. Wind waves 4 to 6 feet. Mixed swell south 3 feet and west 3 to 4 feet. Isolated showers. .WEDNESDAY THROUGH THURSDAY...East winds 15 to 25 knots. Wind waves 4 to 7 feet. Swell south 3 feet, lowering to 2 feet Thursday. West swell 3 to 4 feet. Isolated showers. .FRIDAY...East winds 20 to 25 knots. Wind waves 6 to 8 feet. Swell west 3 feet. Isolated showers. $$