


Coastal Waters Forecast
Issued by NWS
Issued by NWS
401 FZHW51 PHFO 311554 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 554 AM HST Sun Aug 31 2025 .Synopsis for Hawaiian coastal waters... Weak high pressure northeast of the state will remain displaced by a large low far to the north, keeping light to moderate trades in place. A low will pass just south of the Big Island today through Monday. $$ Hawaiian waters within 40 nautical miles including the channels- .TODAY...East winds to 10 knots to Kauai...east 15 to 20 knots elsewhere. Seas 3 to 5 feet. Wave Detail: East southeast 3 feet at 5 seconds. Isolated showers. .TONIGHT...East northeast winds 7 to 10 knots to Kauai...east southeast 15 to 20 knots elsewhere. Seas 4 to 5 feet. Wave Detail: East southeast 3 feet at 5 seconds. Isolated showers. .MONDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 3 feet at 5 seconds. Isolated showers. .MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 3 feet at 5 seconds and north northwest 3 feet at 15 seconds. Isolated showers. .TUESDAY...East winds 10 to 15 knots. Seas 5 to 6 feet. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas to 5 feet. Isolated showers. .WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. Isolated showers. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Isolated showers. $$