FZHW50 PHFO 090102 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 302 PM HST Wed Apr 8 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 302 PM HST Wed Apr 8 2026 .Synopsis for Hawaiian coastal waters... A low pressure system developing just west of the state tonight into Thursday will bring the threat of heavy rain and thunderstorms through at least Friday. Southeast to south winds will also be on the increase and will bring strong to gale force winds Thursday into Friday. Very rough conditions are expected during this time.
Maui County Windward Waters- 302 PM HST Wed Apr 8 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT...
TONIGHT East southeast winds 15 to 20 knots. Seas 7 to 8 feet. Wave Detail: East southeast 6 feet at 7 seconds and northwest 5 feet at 12 seconds. Heavy showers likely with a slight chance of thunderstorms.
THURSDAY East southeast winds 20 to 25 knots. Seas 7 to 10 feet. Wave Detail: Southeast 8 feet at 7 seconds and northwest 4 feet at 11 seconds. Heavy showers likely with a slight chance of thunderstorms.
THURSDAY NIGHT Southeast winds 20 to 25 knots. Seas 7 to 9 feet. Wave Detail: East southeast 8 feet at 7 seconds and northwest 3 feet at 11 seconds. Heavy showers with a slight chance of thunderstorms.
FRIDAY South southeast winds 20 to 25 knots. Seas 7 to 10 feet, subsiding to 6 to 8 feet in the afternoon. Wave Detail: East southeast 10 feet at 8 seconds. Frequent heavy showers with a slight chance of thunderstorms.
FRIDAY NIGHT South winds 15 to 20 knots, becoming south southwest 10 to 15 knots after midnight. Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds and northwest 3 feet at 12 seconds. Showers likely with a slight chance of thunderstorms in the evening, then scattered showers after midnight.
SATURDAY South southwest winds 10 to 15 knots, veering to southwest 7 to 10 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 7 seconds and northwest 3 feet at 11 seconds. Scattered showers.
SATURDAY NIGHT South winds 7 to 10 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 7 seconds and northwest 3 feet at 10 seconds. Scattered showers.
SUNDAY West southwest winds 7 to 10 knots, becoming variable less than 10 knots. Seas 4 to 6 feet. Wave Detail: North northwest 4 feet at 10 seconds and east southeast 3 feet at 7 seconds. Isolated thunderstorms in the morning. Heavy showers likely.
MONDAY Winds variable less than 10 knots, becoming northeast 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: Northwest 5 feet at 11 seconds and east southeast 3 feet at 7 seconds. Showers likely, mainly in the morning. Winds and seas higher in and near tstms.
Maui County Leeward Waters- 302 PM HST Wed Apr 8 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT...
TONIGHT Southeast winds 10 to 15 knots, rising to 15 to 20 knots after midnight. Seas 5 to 8 feet. Wave Detail: South southeast 7 feet at 7 seconds and south southwest 4 feet at 15 seconds. Heavy showers with a slight chance of thunderstorms.
THURSDAY East winds 15 to 20 knots, becoming southeast 20 to 25 knots in the afternoon. Seas 7 to 10 feet. Wave Detail: South southeast 8 feet at 7 seconds and south southwest 5 feet at 14 seconds. Heavy showers likely with a slight chance of thunderstorms.
THURSDAY NIGHT Southeast winds 20 to 25 knots. Seas 7 to 10 feet. Wave Detail: South 9 feet at 7 seconds and south southwest 5 feet at 14 seconds. Heavy showers with a slight chance of thunderstorms.
FRIDAY South southeast winds 20 to 25 knots, becoming south to 15 knots in the afternoon. Seas 6 to 9 feet, subsiding to 5 to 7 feet in the afternoon. Wave Detail: South southeast 7 feet at 7 seconds and south southwest 4 feet at 14 seconds. Frequent heavy showers with a slight chance of thunderstorms.
FRIDAY NIGHT South southwest winds to 15 knots. Seas 5 to 7 feet. Wave Detail: South southwest 5 feet at 13 seconds and southeast 4 feet at 5 seconds. Showers likely with a slight chance of thunderstorms in the evening, then scattered showers after midnight.
SATURDAY South southwest winds to 10 knots. Seas 4 to 6 feet. Wave Detail: South 4 feet at 13 seconds and southeast 3 feet at 4 seconds. Scattered showers.
SATURDAY NIGHT Winds variable less than 10 knots, becoming south southwest 7 to 10 knots after midnight. Seas 3 to 4 feet. Scattered showers in the evening, then numerous showers after midnight.
SUNDAY West winds 7 to 10 knots, becoming variable less than 10 knots. Seas 3 to 4 feet. Isolated thunderstorms in the morning. Scattered heavy showers, then numerous showers after midnight.
MONDAY Winds variable less than 10 knots, becoming east southeast 7 to 10 knots in the evening, backing to north northeast to 10 knots after midnight. Seas to 3 feet. Scattered showers. Winds and seas higher in and near tstms.
Maalaea Bay- 302 PM HST Wed Apr 8 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT...
TONIGHT Winds variable less than 10 knots. Seas to 2 feet or less, then to 3 feet after midnight. Wave Detail: South 3 feet at 7 seconds. Scattered heavy showers with a slight chance of thunderstorms.
THURSDAY North northeast winds 7 to 10 knots, backing to west in the afternoon. Seas 3 to 4 feet. Wave Detail: South southwest 4 feet at 8 seconds and south southwest 3 feet at 14 seconds. Scattered heavy showers with a slight chance of thunderstorms.
THURSDAY NIGHT Winds variable less than 10 knots. Seas to 3 feet. Wave Detail: West southwest 3 feet at 8 seconds and south southwest 3 feet at 14 seconds. Heavy showers likely with a slight chance of thunderstorms.
FRIDAY South southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South southwest 4 feet at 7 seconds. Frequent heavy showers with a slight chance of thunderstorms.
FRIDAY NIGHT South winds to 10 knots. Seas to 3 feet. Wave Detail: South southwest 3 feet at 13 seconds. Showers likely with a slight chance of thunderstorms in the evening, then scattered showers after midnight.
SATURDAY South winds to 10 knots. Seas to 2 feet or less. Scattered showers.
SATURDAY NIGHT Winds variable less than 10 knots. Seas to 2 feet or less. Scattered showers.
SUNDAY Winds variable less than 10 knots, becoming north northeast 7 to 10 knots in the evening, then becoming variable less than 10 knots after midnight. Seas to 2 feet or less. Numerous showers, mainly in the morning.
MONDAY Winds variable less than 10 knots, becoming northeast 7 to 10 knots after midnight. Seas to 2 feet or less. Scattered showers . Winds and seas higher in and near tstms.
Pailolo Channel- 302 PM HST Wed Apr 8 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT...
TONIGHT East winds 7 to 10 knots, becoming 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. Heavy showers likely with a slight chance of thunderstorms.
THURSDAY East northeast winds 15 to 20 knots, easing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: Southeast 5 feet at 7 seconds. Heavy showers likely with a slight chance of thunderstorms.
THURSDAY NIGHT East southeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South southeast 5 feet at 8 seconds. Heavy showers with a slight chance of thunderstorms.
FRIDAY South southeast winds to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 8 seconds and south southwest 3 feet at 13 seconds. Frequent heavy showers with a slight chance of thunderstorms.
FRIDAY NIGHT South winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds. Showers likely with a slight chance of thunderstorms in the evening, then scattered showers after midnight.
SATURDAY South southwest winds to 10 knots. Seas 3 to 5 feet. Wave Detail: South 3 feet at 4 seconds. Scattered showers.
SATURDAY NIGHT Winds variable less than 10 knots, becoming south southwest 7 to 10 knots after midnight. Seas to 3 feet. Scattered showers in the evening, then numerous showers after midnight.
SUNDAY Winds variable less than 10 knots, becoming west 7 to 10 knots in the afternoon, then becoming variable less than 10 knots. Seas to 3 feet. Scattered heavy showers with isolated thunderstorms in the morning, then showers likely through the night. Scattered showers after midnight.
MONDAY Winds variable less than 10 knots, becoming northeast to 10 knots after midnight. Seas to 3 feet. Scattered showers. Winds and seas higher in and near tstms.
Alenuihaha Channel- 302 PM HST Wed Apr 8 2026
...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT...
TONIGHT East winds 15 to 20 knots. Seas 5 to 8 feet. Wave Detail: East southeast 6 feet at 7 seconds and south southwest 4 feet at 15 seconds. Scattered heavy showers this evening. A slight chance of thunderstorms. Isolated heavy showers after midnight.
THURSDAY East northeast winds 20 to 25 knots. Seas 7 to 9 feet. Wave Detail: Southeast 7 feet at 7 seconds and south southwest 4 feet at 15 seconds. Heavy showers likely with a slight chance of thunderstorms.
THURSDAY NIGHT East southeast winds 20 to 25 knots, becoming east northeast 15 to 20 knots after midnight. Seas 6 to 8 feet. Wave Detail: East southeast 6 feet at 7 seconds and south southwest 4 feet at 14 seconds. Heavy showers with a slight chance of thunderstorms.
FRIDAY East southeast winds 20 to 25 knots, becoming south southeast 15 to 20 knots in the afternoon. Seas 6 to 9 feet, subsiding to 6 to 7 feet in the afternoon. Wave Detail: East southeast 7 feet at 7 seconds and south southwest 4 feet at 14 seconds. Frequent heavy showers with a slight chance of thunderstorms.
FRIDAY NIGHT South winds to 15 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 4 seconds and south southwest 5 feet at 13 seconds. Showers likely with a slight chance of thunderstorms in the evening, then scattered showers after midnight.
SATURDAY South southwest winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 4 seconds and south southwest 4 feet at 13 seconds. Scattered showers.
SATURDAY NIGHT Southwest winds 7 to 10 knots. Seas 3 to 5 feet. Wave Detail: East 3 feet at 7 seconds and south southwest 3 feet at 13 seconds. Scattered showers.
SUNDAY West southwest winds 7 to 10 knots, veering to north northwest in the afternoon and evening, veering to northeast after midnight. Seas 3 to 4 feet. Isolated thunderstorms in the morning. Scattered heavy showers, then numerous showers after midnight.
MONDAY East northeast winds 7 to 10 knots in the morning, becoming variable less than 10 knots, then becoming northeast 7 to 10 knots. Seas to 3 feet. Wave Detail: South 3 feet at 14 seconds. Scattered showers . Winds and seas higher in and near tstms.
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