FZHW51 PHFO 220124 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 324 PM HST Fri Aug 21 2026 .Synopsis for Hawaiian coastal waters... A trough in the northwest offshore waters will continue to move northwest as trade winds have begun to fill in across the coastal waters from east to west. Trade winds will continue to strengthen over the weekend as Tropical Storm Moke passes south of the state through Sunday. However, seas greater than 10 feet will most likely be over the eastern half of the coastal waters. $$ Hawaiian waters within 40 nautical miles including the channels- ...SMALL CRAFT ADVISORY... .TONIGHT...East winds 10 to 15 knots to Kauai...east 20 to 25 knots elsewhere. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SATURDAY...East winds 20 to 25 knots. Seas 6 to 9 feet. Wave Detail: East 6 feet at 7 seconds, southeast 3 feet at 10 seconds and west northwest 3 feet at 12 seconds. Scattered showers. .SATURDAY NIGHT...East northeast winds 25 to 30 knots. Seas 8 to 11 feet. Wave Detail: East 7 feet at 8 seconds, southeast 3 feet at 10 seconds and west northwest 3 feet at 11 seconds. Isolated showers. .SUNDAY...East northeast winds 25 to 35 knots Alenuihaha Channel...east northeast 20 to 25 knots elsewhere. Seas 9 to 13 feet. Wave Detail: East 9 feet at 8 seconds and southeast 3 feet at 9 seconds. Showers. .SUNDAY NIGHT...East northeast winds 25 to 30 knots. Seas 9 to 12 feet. Scattered showers. .MONDAY THROUGH WEDENSDAY...East northeast winds 20 to 25 knots. Seas 7 to 10 feet lowering to 5 to 7 feet by Tuesday. Scattered showers. $$