


Coastal Waters Forecast
Issued by NWS
Issued by NWS
309 FZHW51 PHFO 220110 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 310 PM HST Thu Aug 21 2025 .Synopsis for Hawaiian coastal waters... A high pressure ridge north of the Hawaiian Islands will keep fresh to locally strong trade winds blowing across the region into early next week. $$ Hawaiian waters within 40 nautical miles including the channels- ...SMALL CRAFT ADVISORY THROUGH SATURDAY AFTERNOON FOR MAALAEA BAY...THE PAILOLO AND ALENUIHAHA CHANNELS AND WATERS SOUTH OF THE BIG ISLAND... .TONIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers. .FRIDAY...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers. .FRIDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers. .SATURDAY...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SATURDAY NIGHT...East winds to 15 knots to Kauai...east 20 to 25 knots elsewhere. Seas 6 to 9 feet. Isolated showers. .SUNDAY...East winds 10 to 15 knots to Kauai...east 20 to 25 knots elsewhere. Seas 5 to 8 feet. Isolated showers. .SUNDAY NIGHT...East winds to 15 knots to Kauai...east 20 to 25 knots elsewhere. Seas 5 to 8 feet. Isolated showers. .MONDAY...winds east northeast winds 20 to 25 knots. Seas 5 to 7 feet. Isolated showers. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Isolated showers. $$