FZHW50 PHFO 191327 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 327 AM HST Thu Mar 19 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 327 AM HST Thu Mar 19 2026 .Synopsis for Hawaiian coastal waters... A low will approach from the west and move north of the islands by Saturday. The low lifts northeast of the state on Sunday and is replaced by a strong high building to the north during the first half of next week.
Maui County Windward Waters- 327 AM HST Thu Mar 19 2026
TODAY East southeast winds to 15 knots. Seas 5 to 6 feet. Wave Detail: North 4 feet at 11 seconds and east southeast 3 feet at 4 seconds.
TONIGHT Southeast winds 10 to 15 knots, veering to south southeast 7 to 10 knots after midnight. Seas 4 to 5 feet. Wave Detail: North 4 feet at 10 seconds. Heavy showers with isolated thunderstorms.
FRIDAY South southwest winds 7 to 10 knots, becoming 10 to 15 knots in the afternoon. Seas 5 to 6 feet. Wave Detail: North 5 feet at 11 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South southwest winds 10 to 15 knots. Seas 5 to 6 feet. Wave Detail: North 5 feet at 10 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 10 to 15 knots, rising to 15 to 20 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: North 6 feet at 10 seconds and west 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT Southwest winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: North northeast 6 feet at 10 seconds, west 4 feet at 5 seconds and northwest 4 feet at 16 seconds. Heavy showers with isolated thunderstorms.
SUNDAY West southwest winds to 10 knots, veering to north northwest 7 to 10 knots. Seas 5 to 7 feet. Wave Detail: Northwest 5 feet at 15 seconds and north 4 feet at 10 seconds. Heavy showers with isolated thunderstorms through the night, then showers likely through the day.
MONDAY North winds to 10 knots, becoming northeast 15 to 20 knots. Seas 5 to 8 feet. Wave Detail: North 7 feet at 12 seconds and northeast 4 feet at 5 seconds. Showers likely . Winds and seas higher in and near tstms.
Maui County Leeward Waters- 327 AM HST Thu Mar 19 2026
TODAY Southeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South 4 feet at 14 seconds, south 3 feet at 4 seconds and north 3 feet at 11 seconds. Isolated showers this morning. Heavy showers this afternoon.
TONIGHT South southeast winds to 10 knots. Seas 3 to 5 feet. Wave Detail: South 4 feet at 13 seconds and north 3 feet at 10 seconds. Heavy showers with isolated thunderstorms.
FRIDAY South southwest winds to 10 knots. Seas 3 to 5 feet. Wave Detail: North 3 feet at 10 seconds and south 3 feet at 13 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South southwest winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: West 3 feet at 4 seconds, north 3 feet at 10 seconds and south 3 feet at 12 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: West 3 feet at 5 seconds, north 3 feet at 10 seconds and south southwest 3 feet at 18 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: West 3 feet at 4 seconds, north 3 feet at 10 seconds and south southwest 3 feet at 17 seconds. Heavy showers with isolated thunderstorms.
SUNDAY West southwest winds to 10 knots in the morning, becoming variable less than 10 knots, then becoming north 7 to 10 knots. Seas 3 to 5 feet. Wave Detail: North 3 feet at 10 seconds and northwest 3 feet at 14 seconds. Isolated thunderstorms through the night. Showers.
MONDAY North northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: North northwest 4 feet at 4 seconds and north 4 feet at 11 seconds. Showers likely, mainly in the morning. Winds and seas higher in and near tstms.
Maalaea Bay- 327 AM HST Thu Mar 19 2026
TODAY East northeast winds 10 to 15 knots, veering to south southwest 7 to 10 knots this afternoon. Seas to 2 feet or less. Heavy showers likely this afternoon.
TONIGHT Winds variable less than 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
FRIDAY South winds to 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South winds to 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 7 to 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds to 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
SUNDAY Winds variable less than 10 knots. Seas to 2 feet or less. Isolated thunderstorms through the night. Showers.
MONDAY North northeast winds 10 to 15 knots. Seas to 2 feet or less. Heavy showers likely, then a chance of showers after midnight. Winds and seas higher in and near tstms.
Pailolo Channel- 327 AM HST Thu Mar 19 2026
TODAY East southeast winds 10 to 15 knots. Seas 3 to 4 feet. Heavy showers likely this afternoon.
TONIGHT South southeast winds 7 to 10 knots. Seas 3 to 4 feet. Heavy showers with isolated thunderstorms.
FRIDAY South winds to 10 knots. Seas 3 to 4 feet. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South southwest winds 7 to 10 knots. Seas 3 to 4 feet. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: West southwest 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds 10 to 15 knots. Seas 3 to 5 feet. Heavy showers with isolated thunderstorms.
SUNDAY Southwest winds to 10 knots in the morning, becoming variable less than 10 knots. Seas to 3 feet. Isolated thunderstorms through the night. Showers.
MONDAY Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East northeast 3 feet at 5 seconds. Showers likely in the morning, then a chance of showers through the night. Isolated showers after midnight. Winds and seas higher in and near tstms.
Alenuihaha Channel- 327 AM HST Thu Mar 19 2026
TODAY East southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: South 4 feet at 14 seconds. Isolated showers this morning. Heavy showers likely this afternoon.
TONIGHT Southeast winds 7 to 10 knots, veering to south southwest after midnight. Seas 3 to 5 feet. Wave Detail: South 3 feet at 13 seconds. Heavy showers with isolated thunderstorms.
FRIDAY South southwest winds 10 to 15 knots. Seas 3 to 5 feet. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South southwest winds 10 to 15 knots. Seas 3 to 5 feet. Heavy showers with isolated thunderstorms.
SATURDAY Southwest winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: West 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 4 to 6 feet. Heavy showers with isolated thunderstorms.
SUNDAY West southwest winds 7 to 10 knots, becoming variable less than 10 knots, then becoming north northeast 7 to 10 knots after midnight. Seas 3 to 4 feet. Isolated thunderstorms through the night. Heavy showers.
MONDAY North northeast winds to 10 knots, becoming northeast 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East northeast 5 feet at 5 seconds and north northeast 3 feet at 11 seconds. Showers likely . Winds and seas higher in and near tstms.
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