567 FZHW61 PHFO 211520 OFFN10 NAVTEX Marine Forecast for Hawaiian Waters National Weather Service Honolulu HI 520 AM HST Fri May 21 2021 ...Please refer to Coastal Waters Forecasts available through NOAA Weather Radio and other means for detailed coastal forecasts... .Synopsis... High pressure to the NE will maintain moderate to fresh trade winds into Saturday. A weak front hanging up N of the islands will weaken overall trades and veer winds more SE early next week. $$ Hawaiian waters within 40 nautical miles including the channels- .TODAY AND TONIGHT...East winds 15 to 25 knots. Wind waves 4 to 7 feet. Northwest swell 3 feet tonight. Isolated showers. .SATURDAY AND SATURDAY NIGHT...East winds 10 to 20 knots. Wind waves 4 to 6 feet. Isolated showers. .SUNDAY THROUGH MONDAY...East to variable winds up to 10 knots around Kauai and Oahu. Elsewhere, east to southeast winds 10 to 15 knots. Wind waves 4 to 6 feet. North swell 3 feet. Scattered showers. $$ Hawaiian Offshore Waters- .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT THROUGH SUNDAY...E winds 10 to 20 kt. Seas 6 to 8 ft. .MONDAY AND TUESDAY...N of 20N, E to SE winds 5 to 15 kt. S of 20N, E winds 10 to 20 kt. Seas 5 to 8 ft. $$