


Coastal Waters Forecast
Issued by NWS
Issued by NWS
740 FZHW51 PHFO 121317 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 316 AM HST Sun Oct 12 2025 .Synopsis for Hawaiian coastal waters... A broad trough north of the islands will keep trade winds at gentle to moderate strength into Tuesday. Building high pressure to the north will drive stronger easterly trade winds Wednesday and Thursday, while a disturbance aloft brings instability. $$ Hawaiian waters within 40 nautical miles including the channels- .TODAY...East winds 7 to 10 knots to Kauai...east southeast 15 to 20 knots elsewhere. Seas 5 to 6 feet. Wave Detail: East 4 feet at 13 seconds and northwest 4 feet at 20 seconds. Isolated showers. .TONIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet. Wave Detail: Northwest 5 feet at 18 seconds and east 4 feet at 12 seconds. Scattered showers. .MONDAY...East winds 10 to 15 knots. Seas 6 to 8 feet. Wave Detail: Northwest 6 feet at 16 seconds and east 3 feet at 12 seconds. Scattered showers. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 6 to 9 feet. Wave Detail: Northwest 7 feet at 16 seconds and east 3 feet at 11 seconds. Scattered showers. .TUESDAY...East winds 10 to 15 knots. Seas 6 to 9 feet. Scattered showers. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 8 feet. Scattered showers. .WEDNESDAY...East winds 15 to 20 knots. Seas 5 to 8 feet. Scattered showers through the night, then numerous showers through the day. .THURSDAY...East winds 15 to 20 knots. Seas 6 to 7 feet. Numerous showers through the night, then scattered showers through the day. $$