Coastal Waters Forecast
Issued by NWS Honolulu, HI
Issued by NWS Honolulu, HI
051 FZHW50 PHFO 181334 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 333 AM HST Mon Aug 18 2025 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. PHZ100-190200- 333 AM HST Mon Aug 18 2025 .Synopsis for Hawaiian coastal waters... Surface high pressure centered far north of the islands will help maintain fresh to locally strong east trade winds through the week. $$ PHZ110-190200- Kauai Northwest Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. A chance of showers in the morning. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .WEDNESDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A chance of showers. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. .FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. $$ PHZ111-190200- Kauai Windward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. Showers likely, mainly this morning. .TONIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. A chance of showers. .TUESDAY...East winds 15 to 20 knots. Seas to 5 feet. A chance of showers in the morning. .TUESDAY NIGHT...East winds to 15 knots. Seas to 5 feet. A slight chance of showers. .WEDNESDAY...East northeast winds to 15 knots. Seas 5 to 6 feet. A slight chance of showers. .WEDNESDAY NIGHT...East winds to 15 knots. Seas 5 to 6 feet. A chance of showers. .THURSDAY...East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 13 seconds. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. .FRIDAY...East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 13 seconds. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. $$ PHZ112-190200- Kauai Leeward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers. .TONIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers. .TUESDAY...East southeast winds 15 to 20 knots. Seas 3 to 5 feet. A chance of showers, mainly in the morning. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers in the evening. .WEDNESDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A chance of showers. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. A chance of showers in the morning. A slight chance of showers in the afternoon, then a chance of showers through the day. .FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. A slight chance of showers through the night, then a chance of showers through the day. $$ PHZ113-190200- Kauai Channel- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. A chance of showers in the morning. .TUESDAY NIGHT...East northeast winds to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .WEDNESDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers. .THURSDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 14 seconds. A slight chance of showers, then a chance of showers after midnight. .FRIDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers. $$ PHZ114-190200- Oahu Windward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East 5 feet at 7 seconds. A chance of showers, mainly this morning. .TONIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. A slight chance of showers. .TUESDAY...East winds 15 to 20 knots. Seas to 5 feet. A chance of showers in the morning. .TUESDAY NIGHT...East northeast winds 15 to 20 knots. Seas to 5 feet. A slight chance of showers. .WEDNESDAY...East northeast winds 15 to 20 knots. Seas to 5 feet. A slight chance of showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. A chance of showers. .THURSDAY...East winds 15 to 20 knots. Seas to 5 feet. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. .FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. $$ PHZ115-190200- Oahu Leeward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers, mainly this morning. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. A slight chance of showers. .TUESDAY...East winds 15 to 20 knots. Seas to 4 feet. A slight chance of showers in the morning. .TUESDAY NIGHT...East northeast winds to 20 knots. Seas 4 to 6 feet. Wave Detail: South 3 feet at 16 seconds. .WEDNESDAY...East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: South 3 feet at 16 seconds. .WEDNESDAY NIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers. .THURSDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 14 seconds. A slight chance of showers. .FRIDAY...East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers. $$ PHZ116-190200- Kaiwi Channel- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A slight chance of showers. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. .TUESDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers in the morning. .TUESDAY NIGHT...East northeast winds to 20 knots. Seas 4 to 6 feet. A slight chance of showers. .WEDNESDAY...East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers. .THURSDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 14 seconds. A slight chance of showers. .FRIDAY...East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers. $$ PHZ117-190200- Maui County Windward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers, mainly this morning. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. A slight chance of showers. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers in the morning. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers in the evening, then a chance of showers after midnight. .WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .WEDNESDAY NIGHT...East winds to 20 knots. Seas 4 to 5 feet. A slight chance of showers in the evening, then a chance of showers after midnight. .THURSDAY...East winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 4 to 5 feet. A chance of showers. .FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. $$ PHZ118-190200- Maui County Leeward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. A slight chance of showers this morning. .TONIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 3 to 4 feet. .TUESDAY NIGHT...East northeast winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 4 to 6 feet. Wave Detail: South 3 feet at 13 seconds. .WEDNESDAY...East northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers in the morning. .WEDNESDAY NIGHT...East northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers after midnight. .THURSDAY...East northeast winds 10 to 15 knots, rising to 15 to 20 knots in the evening, easing to 10 to 15 knots after midnight. Seas 4 to 6 feet. Wave Detail: South 3 feet at 14 seconds. A slight chance of showers in the morning. A slight chance of showers through the day. .FRIDAY...East northeast winds 10 to 15 knots, rising to 15 to 20 knots in the evening, easing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers after midnight. $$ PHZ119-190200- Maalaea Bay- 334 AM HST Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING... .TODAY...North winds to 25 knots. Seas to 2 feet or less. Wave Detail: Northeast 2 feet at 3 seconds. .TONIGHT...North winds 20 to 25 knots. Seas to 2 feet or less. Wave Detail: Northeast 2 feet at 3 seconds. .TUESDAY...North winds to 25 knots. Seas to 2 feet or less. .TUESDAY NIGHT...North winds to 25 knots. Seas to 2 feet or less. .WEDNESDAY...North winds to 25 knots. Seas to 2 feet or less. .WEDNESDAY NIGHT...North winds to 25 knots. Seas to 2 feet or less. .THURSDAY...North winds to 25 knots. Seas to 2 feet or less. .FRIDAY...North winds to 25 knots. Seas to 3 feet. $$ PHZ120-190200- Pailolo Channel- 334 AM HST Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING... .TODAY...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. A slight chance of showers this morning. .TONIGHT...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. .TUESDAY...East northeast winds 20 to 25 knots. Seas 3 to 4 feet. A slight chance of showers in the morning. .TUESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 3 to 4 feet. A slight chance of showers. .WEDNESDAY...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. A slight chance of showers. .THURSDAY...East northeast winds 20 to 25 knots. Seas 3 to 5 feet. A slight chance of showers. .FRIDAY...East northeast winds 20 to 25 knots. Seas 3 to 4 feet. A slight chance of showers. $$ PHZ121-190200- Alenuihaha Channel- 334 AM HST Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING... .TODAY...East winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 6 seconds. A slight chance of showers this morning. .TONIGHT...East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 6 seconds. A slight chance of showers after midnight. .TUESDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. A slight chance of showers in the morning. .TUESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. A slight chance of showers. .WEDNESDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 16 seconds. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers. .THURSDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 14 seconds. A slight chance of showers in the morning. A chance of showers through the night, then a slight chance of showers after midnight. .FRIDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 13 seconds. A chance of showers in the morning. A slight chance of showers. $$ PHZ122-190200- Big Island Windward Waters- 334 AM HST Mon Aug 18 2025 .TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 7 seconds and south southwest 3 feet at 15 seconds. A slight chance of showers. .TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 7 seconds and south 3 feet at 14 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. .TUESDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers. .TUESDAY NIGHT...East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. .WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: South 3 feet at 15 seconds. A chance of showers. .THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: South 3 feet at 14 seconds. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. .FRIDAY...East winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: South 4 feet at 13 seconds. A chance of showers in the morning, then a slight chance of showers in the afternoon. A chance of showers through the day. $$ PHZ123-190200- Big Island Leeward Waters- 334 AM HST Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING... .TODAY...West of the Big Island, winds variable less than 10 knots, becoming west 7 to 10 knots this afternoon. Near South Point, east winds to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 5 seconds. Hazy. .TONIGHT...West northwest winds 7 to 10 knots west of the Big Island...East to 25 knots near South Point. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Hazy. A slight chance of showers after midnight. .TUESDAY...West northwest winds 7 to 10 knots west of the Big Island...East to 25 knots near South Point. Seas 4 to 6 feet. A slight chance of showers in the morning. .TUESDAY 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: South 3 feet at 13 seconds. A slight chance of showers in the evening. A chance of showers after midnight. .WEDNESDAY...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 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 3 feet at 15 seconds. A slight chance of showers. .WEDNESDAY NIGHT...West of the Big Island, west northwest winds 7 to 10 knots in the evening, becoming variable less than 10 knots. Near South Point, east winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 4 feet at 15 seconds. A slight chance of showers. .THURSDAY...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: South 4 feet at 13 seconds. A slight chance of showers in the morning. A slight chance of showers through the day. .FRIDAY...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: South 4 feet at 13 seconds. A slight chance of showers in the morning. A slight chance of showers through the day. $$ PHZ124-190200- Big Island Southeast Waters- 334 AM HST Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING... .TODAY...East northeast winds 20 to 25 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 7 seconds and south southwest 3 feet at 15 seconds. A slight chance of showers this morning. .TONIGHT...East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds and south southwest 3 feet at 14 seconds. A slight chance of showers. .TUESDAY...East northeast winds 20 to 25 knots. Seas 4 to 5 feet, building to 5 to 7 feet in the afternoon. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers in the morning. .TUESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 8 feet. Wave Detail: South 3 feet at 13 seconds. A slight chance of showers. .WEDNESDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 4 feet at 15 seconds. A slight chance of showers. .WEDNESDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 4 feet at 15 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. .THURSDAY...East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: South 4 feet at 14 seconds. A slight chance of showers, then a chance of showers after midnight. .FRIDAY...East northeast winds 20 to 25 knots. Seas 7 to 8 feet. Wave Detail: South 4 feet at 13 seconds. A slight chance of showers. $$