


Coastal Waters Forecast
Issued by NWS
Issued by NWS
928 FZHW51 PHFO 171838 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 838 AM HST Fri Oct 17 2025 .Synopsis for Hawaiian coastal waters... The high pressure ridge north of the state will continue producing moderate to locally strong trades into early next week. An upper low will drift over the northern waters today near Kauai and Oahu through the weekend keeping periods of rain and thunderstorms in the forecast over these northern waters. $$ Hawaiian waters within 40 nautical miles including the channels- ...SMALL CRAFT ADVISORY THROUGH LATE THIS AFTERNOON FOR KAUAI NORTHWEST WATERS...KAUAI WINDWARD WATERS...KAUAI CHANNEL AND OAHU WINDWARD WATERS... ...SMALL CRAFT ADVISORY THROUGH SATURDAY AFTERNOON FOR MAALAEA BAY...THE PAILOLO AND ALENUIHAHA CHANNELS AND WATERS SOUTH OF THE BIG ISLAND... .TODAY...East winds 20 to 25 knots. Seas 8 to 11 feet. Wave Detail: North northwest 6 feet at 13 seconds and east 5 feet at 7 seconds. Hazy. Scattered showers with a slight chance of thunderstorms. .TONIGHT...East winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East 5 feet at 7 seconds and north northwest 5 feet at 13 seconds. Scattered showers with a slight chance of thunderstorms. .SATURDAY...East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East 6 feet at 7 seconds and north northwest 4 feet at 15 seconds. Scattered showers with a slight chance of thunderstorms. .SATURDAY NIGHT...East northeast winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 6 seconds and northwest 4 feet at 14 seconds. Scattered showers. .SUNDAY...East northeast winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers. .SUNDAY NIGHT...East northeast winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers. .MONDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers. .TUESDAY...East northeast winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers. Winds and seas higher in and near tstms. $$