


Coastal Waters Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
898 FZHW50 PHFO 220109 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 308 PM HST Thu Aug 21 2025 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. PHZ100-221400- 308 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. $$ PHZ110-221400- Kauai Northwest Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 6 seconds. Isolated showers. .FRIDAY...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 6 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SATURDAY...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SUNDAY...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. .SUNDAY NIGHT...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers after midnight. .MONDAY...East winds to 15 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. Isolated showers through the day. .TUESDAY...East winds to 15 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 7 seconds. Isolated showers in the morning. Isolated showers after midnight. $$ PHZ111-221400- Kauai Windward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. .FRIDAY...East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers. .FRIDAY NIGHT...East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SATURDAY...East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East winds to 15 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SUNDAY...East southeast winds to 15 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. .SUNDAY NIGHT...East southeast winds to 15 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers after midnight. .MONDAY...East winds to 15 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. Isolated showers through the day. .TUESDAY...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. Isolated showers through the day. $$ PHZ112-221400- Kauai Leeward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. .FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. .SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds. .SATURDAY NIGHT...East winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. .SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. .MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. $$ PHZ113-221400- Kauai Channel- 309 PM HST Thu Aug 21 2025 .TONIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers after midnight. .FRIDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers. .SATURDAY...East winds to 15 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers after midnight. .SUNDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers after midnight. .MONDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers after midnight. .TUESDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. Isolated showers after midnight. $$ PHZ114-221400- Oahu Windward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers after midnight. .FRIDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SATURDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers after midnight. .SUNDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers after midnight. .MONDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. Isolated showers through the day. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. Isolated showers after midnight. $$ PHZ115-221400- Oahu Leeward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East northeast winds to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. .FRIDAY...East northeast winds to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds. .FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds. .SATURDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas to 4 feet. Wave Detail: East southeast 4 feet at 6 seconds. .SUNDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East southeast 4 feet at 7 seconds. .SUNDAY NIGHT...East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East southeast 4 feet at 7 seconds. .MONDAY...East winds 7 to 10 knots, backing to east northeast 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East southeast 4 feet at 6 seconds. .TUESDAY...East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. $$ PHZ116-221400- Kaiwi Channel- 309 PM HST Thu Aug 21 2025 .TONIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .FRIDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. .SUNDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers after midnight. .MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 6 seconds. .TUESDAY...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. Isolated showers after midnight. $$ PHZ117-221400- Maui County Windward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers after midnight. .FRIDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. .SATURDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East southeast winds to 20 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers. .SUNDAY...East winds 20 to 25 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. .SUNDAY NIGHT...East southeast winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers. .MONDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers in the morning. Isolated showers through the day. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers in the morning. Isolated showers through the day. $$ PHZ118-221400- Maui County Leeward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds. .FRIDAY...East winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds. .FRIDAY NIGHT...East northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds. .SATURDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots, becoming east northeast 15 to 20 knots after midnight. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds. .SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 7 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 7 seconds. .MONDAY...East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East southeast 4 feet at 6 seconds. .TUESDAY...East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. $$ PHZ119-221400- Maalaea Bay- 309 PM HST Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...North winds to 25 knots. Seas to 2 feet or less. .FRIDAY...North winds 20 to 25 knots. Seas to 2 feet or less. .FRIDAY NIGHT...North winds to 25 knots, easing to 20 knots after midnight. Seas to 3 feet in the evening, then to 2 feet or less. .SATURDAY...North winds 20 to 25 knots. Seas to 2 feet or less. .SATURDAY NIGHT...Northeast winds to 20 knots, easing to 15 knots after midnight. Seas to 2 feet or less. .SUNDAY...Northeast winds to 15 knots, rising to 20 knots in the afternoon. Seas to 2 feet or less. .SUNDAY NIGHT...Northeast winds 15 to 20 knots, easing to 10 knots after midnight. Seas to 2 feet or less. .MONDAY...Northeast winds 10 to 15 knots. Seas to 2 feet or less. .TUESDAY...Northeast winds to 15 knots, becoming 15 to 20 knots. Seas to 2 feet or less. $$ PHZ120-221400- Pailolo Channel- 309 PM HST Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. .FRIDAY...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. .FRIDAY NIGHT...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. .SATURDAY...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. .SATURDAY NIGHT...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. .SUNDAY...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 3 feet at 4 seconds. .SUNDAY NIGHT...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. .MONDAY...East northeast winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 5 seconds. .TUESDAY...East northeast winds 15 to 20 knots, rising to 20 to 25 knots in the afternoon, easing to 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds. Isolated showers in the morning. $$ PHZ121-221400- Alenuihaha Channel- 309 PM HST Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. Isolated showers. .FRIDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. Isolated showers after midnight. .SATURDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 6 seconds. .SATURDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. Isolated showers after midnight. .SUNDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. .SUNDAY NIGHT...East winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. Isolated showers after midnight. .MONDAY...East northeast winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers after midnight. .TUESDAY...East northeast winds 20 to 25 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. Isolated showers after midnight. $$ PHZ122-221400- Big Island Windward Waters- 309 PM HST Thu Aug 21 2025 .TONIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 5 seconds. Isolated showers. .FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 7 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 7 seconds. Isolated showers. .SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 8 seconds. Isolated showers. .SUNDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 8 seconds. Isolated showers in the morning. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 8 seconds. Isolated showers. .MONDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 8 seconds. Isolated showers. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 7 seconds. Isolated showers. $$ PHZ123-221400- Big Island Leeward Waters- 309 PM HST Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...West of the Big Island, winds variable less than 10 knots. Near South Point, east winds 20 to 25 knots, backing to east northeast after midnight. Seas 5 to 7 feet. Wave Detail: East 5 feet at 6 seconds. .FRIDAY...Winds variable less than 10 knots west of the Big Island...East 20 to 25 knots near South Point. Seas 5 to 7 feet. Wave Detail: East 4 feet at 5 seconds. .FRIDAY NIGHT...Winds variable less than 10 knots west of the Big Island...East northeast 20 to 25 knots near South Point. Seas 5 to 7 feet. Wave Detail: East 4 feet at 5 seconds. .SATURDAY...Winds variable less than 10 knots west of the Big Island...East 20 to 25 knots near South Point. Seas 5 to 7 feet. Wave Detail: East 4 feet at 5 seconds. .SATURDAY NIGHT...Winds variable less than 10 knots west of the Big Island...East 20 to 25 knots near South Point. Seas 5 to 7 feet. Wave Detail: East 5 feet at 5 seconds. Isolated showers. .SUNDAY...West of the Big Island, winds variable less than 10 knots, becoming west 7 to 10 knots in the afternoon. Near South Point, east winds to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers in the morning. .SUNDAY NIGHT...West of the Big Island, winds variable less than 10 knots. Near South Point, east winds to 25 knots, becoming 20 to 25 knots after midnight. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .MONDAY...Winds variable less than 10 knots west of the Big Island...East 20 to 25 knots near South Point. Seas 4 to 6 feet. Wave Detail: East 5 feet at 5 seconds. Isolated showers. .TUESDAY...West of the Big Island, winds variable less than 10 knots, becoming west 7 to 10 knots in the afternoon and evening, then becoming variable less than 10 knots after midnight. Near South Point, east winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers in the morning. Isolated showers through the day. $$ PHZ124-221400- Big Island Southeast Waters- 309 PM HST Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...East northeast winds 20 to 25 knots. Seas 6 to 7 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. .FRIDAY...East northeast winds 20 to 25 knots. Seas 6 to 7 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers in the morning. .FRIDAY NIGHT...East northeast winds 20 to 25 knots. Seas 6 to 7 feet. Wave Detail: East southeast 6 feet at 7 seconds. Isolated showers. .SATURDAY...East northeast winds 20 to 25 knots. Seas 6 to 7 feet. Wave Detail: East 6 feet at 7 seconds. Isolated showers in the morning. .SATURDAY NIGHT...East northeast winds 20 to 25 knots. Seas 6 to 7 feet. Wave Detail: East southeast 6 feet at 8 seconds. Isolated showers. .SUNDAY...East northeast winds 20 to 25 knots. Seas 5 to 6 feet. Wave Detail: East southeast 6 feet at 8 seconds. Isolated showers in the morning. .SUNDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 8 seconds. Isolated showers after midnight. .MONDAY...East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 6 feet at 7 seconds. Isolated showers. .TUESDAY...East northeast winds to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers in the morning. Isolated showers through the day. $$