


Coastal Waters Forecast
Issued by NWS
Issued by NWS
557 FZHW51 PHFO 291318 CWFHI1 Generalized Statewide Coastal Waters Forecast for Hawaii National Weather Service Honolulu HI 318 AM HST Tue Jul 29 2025 .Synopsis for Hawaiian coastal waters... Trade winds will gradually increase to fresh to locally strong levels later today into Wednesday as a high pressure ridge north of the islands builds into the region and Hurricane Iona and Tropical Storm Keli pass westward, several hundred miles south of the Hawaiian Islands. This ridge will keep locally strong will maintain locally strong trade winds in the forecast through the weekend. $$ Hawaiian waters within 40 nautical miles including the channels- ...SMALL CRAFT ADVISORY THROUGH WEDNESDAY AFTERNOON FOR KAIWI CHANNEL...MAUI COUNTY WINDWARD WATERS...MAALAEA BAY...PAILOLO CHANNEL...ALENUIHAHA CHANNEL AND WATERS AROUND THE BIG ISLAND... .TODAY...East winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: East southeast 5 feet at 7 seconds and southeast 3 feet at 10 seconds. Isolated showers. .TONIGHT...East winds 20 to 25 knots. Seas 6 to 9 feet. Wave Detail: East southeast 5 feet at 7 seconds, southeast 3 feet at 10 seconds and south 3 feet at 16 seconds. Scattered showers. .WEDNESDAY...East winds 15 to 20 knots to Kauai...east 25 to 30 knots elsewhere. Seas 7 to 10 feet. Wave Detail: East southeast 5 feet at 7 seconds, south 4 feet at 20 seconds and southeast 3 feet at 10 seconds. Isolated showers. .WEDNESDAY NIGHT...East winds 20 to 25 knots. Seas 8 to 11 feet. Wave Detail: East 6 feet at 7 seconds, south 4 feet at 19 seconds and southeast 3 feet at 9 seconds. Isolated showers. .THURSDAY...East northeast winds 20 to 25 knots. Seas 8 to 11 feet. Isolated showers. .THURSDAY NIGHT...East northeast winds 20 to 25 knots. Seas 7 to 10 feet. Isolated showers. .FRIDAY...Alenuihaha Channel, east northeast winds 20 to 25 knots, rising to 25 to 30 knots. Elsewhere, east northeast winds 15 to 20 knots. Seas 7 to 10 feet, subsiding to 6 to 8 feet. Isolated showers through the night. Scattered showers through the day. .SATURDAY...East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Isolated showers through the night. Scattered showers through the day. $$