FZHW50 PHFO 200102 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 302 PM HST Thu Mar 19 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 302 PM HST Thu Mar 19 2026 .Synopsis for Hawaiian coastal waters... A surface low is centered roughly 300 nm west of Kauai with a front extending from the low to about 200 nm north of Oahu. The low will remain nearly stationary through Friday then pass north of the islands Saturday. The low will lift northeast of the state on Sunday, and strong high pressure will build far north of the islands Monday and Tuesday.
Maui County Windward Waters- 302 PM HST Thu Mar 19 2026
TONIGHT Southeast winds 10 to 15 knots. Seas to 5 feet. Wave Detail: North 4 feet at 10 seconds and east southeast 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
FRIDAY South southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: North 4 feet at 11 seconds and east southeast 3 feet at 6 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: North 4 feet at 10 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 10 to 15 knots. Seas 4 to 6 feet, building to 6 to 7 feet in the afternoon. Wave Detail: North 6 feet at 11 seconds and west northwest 4 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds 10 to 15 knots. Seas 5 to 7 feet. Wave Detail: North northeast 6 feet at 10 seconds, west 3 feet at 4 seconds and northwest 3 feet at 15 seconds. Heavy showers with isolated thunderstorms.
SUNDAY South southwest winds to 15 knots. Seas 4 to 6 feet. Wave Detail: North northeast 4 feet at 10 seconds, west 3 feet at 4 seconds and northwest 3 feet at 15 seconds. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT West southwest winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: North 3 feet at 10 seconds and northwest 3 feet at 14 seconds. Isolated thunderstorms in the evening. Showers.
MONDAY North northeast winds 10 to 15 knots, becoming northeast 15 to 20 knots. Seas 6 to 9 feet. Wave Detail: Northeast 6 feet at 6 seconds and north 6 feet at 11 seconds. Numerous showers, mainly in the morning.
TUESDAY East northeast winds 15 to 20 knots. Seas 8 to 11 feet. Wave Detail: North 8 feet at 12 seconds and northeast 7 feet at 7 seconds. Scattered showers in the morning, then isolated showers in the afternoon. Scattered showers through the day. Winds and seas higher in and near tstms.
Maui County Leeward Waters- 302 PM HST Thu Mar 19 2026
TONIGHT South southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: South southeast 3 feet at 5 seconds and south 3 feet at 13 seconds. Heavy showers with isolated thunderstorms.
FRIDAY South winds to 15 knots. Seas 4 to 6 feet. Wave Detail: South southeast 5 feet at 5 seconds, north 3 feet at 10 seconds and south 3 feet at 13 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South winds to 15 knots. Seas 3 to 5 feet. Wave Detail: South southeast 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 to 15 knots. Seas 3 to 5 feet, building to 5 to 7 feet in the afternoon. Wave Detail: West southwest 4 feet at 5 seconds, north 3 feet at 11 seconds and south southwest 3 feet at 18 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds to 15 knots. Seas 5 to 7 feet. Wave Detail: South southwest 4 feet at 5 seconds, north 3 feet at 10 seconds and south southwest 3 feet at 17 seconds. Heavy showers with isolated thunderstorms.
SUNDAY South southwest winds 10 to 15 knots. Seas 4 to 6 feet, subsiding to 3 to 4 feet in the afternoon. Wave Detail: Southwest 4 feet at 5 seconds and south southwest 3 feet at 16 seconds. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT West southwest winds to 10 knots. Seas 3 to 5 feet. Isolated thunderstorms in the evening. Showers.
MONDAY North northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: North 4 feet at 11 seconds and north 3 feet at 5 seconds. Numerous showers in the morning, then scattered showers through the night. Isolated showers after midnight.
TUESDAY Northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: North 5 feet at 12 seconds and east northeast 4 feet at 5 seconds. Isolated showers. Winds and seas higher in and near tstms.
Maalaea Bay- 302 PM HST Thu Mar 19 2026
TONIGHT South winds to 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
FRIDAY South winds 10 to 15 knots. Seas to 2 feet or less. Wave Detail: South 2 feet at 5 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South winds 10 to 15 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
SATURDAY South winds 10 to 15 knots. Seas to 2 feet or less. Wave Detail: West 2 feet at 6 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds 10 to 15 knots. Seas to 2 feet or less. Wave Detail: Southwest 2 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SUNDAY South southwest winds to 10 knots. Seas to 2 feet or less. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT South southwest winds 7 to 10 knots. Seas to 2 feet or less. Isolated thunderstorms in the evening. Showers.
MONDAY North northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas to 2 feet or less. Numerous showers in the morning, then scattered showers through the night. Isolated showers after midnight.
TUESDAY Northeast winds 15 to 20 knots. Seas to 2 feet or less. Isolated showers in the morning. Isolated showers after midnight. Winds and seas higher in and near tstms.
Pailolo Channel- 302 PM HST Thu Mar 19 2026
TONIGHT South southeast winds 10 to 15 knots. Seas 3 to 4 feet. Heavy showers with isolated thunderstorms.
FRIDAY South winds 10 to 15 knots, rising to 15 to 20 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: South 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South winds 10 to 15 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 6 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 South southwest winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Southwest 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT Southwest winds 10 to 15 knots. Seas to 3 feet. Isolated thunderstorms in the evening. Showers.
MONDAY North northeast winds to 10 knots, rising to 15 knots. Seas 3 to 5 feet. Wave Detail: East northeast 4 feet at 6 seconds. Numerous showers in the morning, then scattered showers through the night. Isolated showers after midnight.
TUESDAY Northeast winds 15 to 20 knots, becoming east northeast 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 5 feet at 7 seconds. Isolated showers through the night. Scattered showers through the day. Winds and seas higher in and near tstms.
Alenuihaha Channel- 302 PM HST Thu Mar 19 2026
TONIGHT South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 5 seconds and south 3 feet at 13 seconds. Heavy showers with isolated thunderstorms.
FRIDAY South winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: South southeast 5 feet at 5 seconds. Heavy showers with isolated thunderstorms.
FRIDAY NIGHT South southwest winds to 15 knots. Seas 3 to 4 feet. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: West 4 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds to 15 knots. Seas 4 to 6 feet. Wave Detail: Southwest 4 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SUNDAY Southwest winds to 15 knots. Seas 3 to 4 feet. Wave Detail: West southwest 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT Southwest winds 10 to 15 knots. Seas 3 to 4 feet. Isolated thunderstorms in the evening. Showers.
MONDAY North northeast winds 10 to 15 knots, becoming northeast 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 5 seconds. Numerous showers, mainly in the morning.
TUESDAY Northeast winds 20 to 25 knots, becoming east northeast 25 to 30 knots in the evening, easing to 20 to 25 knots after midnight. Seas 5 to 7 feet. Wave Detail: East northeast 7 feet at 6 seconds and north 3 feet at 12 seconds. Isolated showers through the night. Scattered showers through the day. Winds and seas higher in and near tstms.
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