FZHW50 PHFO 201402 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 402 AM HST Fri Mar 20 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 402 AM HST Fri Mar 20 2026 .Synopsis for Hawaiian coastal waters... A surface low is centered roughly 300 nm west of Kauai with a front extending from the low north of the islands. 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- 402 AM HST Fri Mar 20 2026
TODAY South southeast winds 10 to 15 knots, becoming southeast 15 to 20 knots this afternoon. Seas 5 to 6 feet. Wave Detail: South southeast 4 feet at 5 seconds and north 4 feet at 11 seconds. Showers with isolated thunderstorms.
TONIGHT South southeast winds 10 to 15 knots. Seas 5 to 6 feet. Wave Detail: North 5 feet at 10 seconds and south southeast 4 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South winds 10 to 15 knots, becoming southwest 15 to 20 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: North 6 feet at 11 seconds and south southeast 3 feet at 4 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds 10 to 15 knots. Seas 5 to 6 feet. Wave Detail: North northeast 5 feet at 10 seconds, west southwest 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 5 to 6 feet. Wave Detail: North northeast 4 feet at 10 seconds, west southwest 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 5 to 6 feet. Wave Detail: North 4 feet at 9 seconds, northwest 4 feet at 14 seconds and west northwest 3 feet at 5 seconds. Scattered showers.
MONDAY North northeast winds 10 to 15 knots, becoming northeast 15 to 20 knots. Seas 7 to 10 feet. Wave Detail: North 8 feet at 13 seconds and north 4 feet at 5 seconds. Scattered showers. Isolated showers after midnight.
TUESDAY East northeast winds 15 to 20 knots. Seas 7 to 10 feet. Wave Detail: North 10 feet at 11 seconds and northeast 4 feet at 5 seconds. Isolated showers through the night. Scattered showers through the day. Winds and seas higher in and near tstms.
Maui County Leeward Waters- 402 AM HST Fri Mar 20 2026
TODAY South southeast winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: South southeast 5 feet at 5 seconds, north 3 feet at 10 seconds and south 3 feet at 13 seconds. Showers with isolated thunderstorms.
TONIGHT South winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: Southwest 5 feet at 5 seconds, north 3 feet at 10 seconds and south 3 feet at 12 seconds. Heavy showers with isolated thunderstorms.
SATURDAY Southwest winds 15 to 20 knots, becoming southeast 7 to 10 knots in the afternoon. Seas 4 to 6 feet. 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 4 to 6 feet. Wave Detail: West southwest 3 feet at 4 seconds, north 3 feet at 11 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. Wave Detail: West southwest 3 feet at 4 seconds and south southwest 3 feet at 16 seconds. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT West southwest winds to 10 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 16 seconds. Scattered showers.
MONDAY North northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: North 5 feet at 12 seconds and north 4 feet at 5 seconds. Scattered showers in the morning. Isolated showers through the night.
TUESDAY Northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 5 seconds and north 5 feet at 11 seconds. Winds and seas higher in and near tstms.
Maalaea Bay- 402 AM HST Fri Mar 20 2026
TODAY North northeast winds to 15 knots. Seas to 2 feet or less. Wave Detail: South southwest 2 feet at 5 seconds. Showers with isolated thunderstorms.
TONIGHT Southeast winds 10 to 15 knots. Seas to 2 feet or less. Wave Detail: West southwest 2 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South winds to 15 knots, backing to north northeast in the afternoon. Seas to 2 feet or less. Wave Detail: West southwest 2 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY NIGHT South southwest winds 10 to 15 knots. Seas to 2 feet or less. 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. Scattered showers.
MONDAY North northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas to 2 feet or less. Scattered showers.
TUESDAY Northeast winds 15 to 20 knots. Seas to 2 feet or less. Winds and seas higher in and near tstms.
Pailolo Channel- 402 AM HST Fri Mar 20 2026
TODAY South southeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: South southwest 3 feet at 5 seconds. Showers with isolated thunderstorms.
TONIGHT South winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: Southwest 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: 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. Wave Detail: West southwest 3 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SUNDAY South southwest winds 10 to 15 knots. Seas 3 to 4 feet. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT Southwest winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers.
MONDAY North northeast winds to 10 knots, rising to 15 knots. Seas 3 to 5 feet. Wave Detail: Northeast 3 feet at 4 seconds. Scattered showers in the morning. Isolated showers through the night.
TUESDAY Northeast winds 15 to 20 knots, becoming east northeast 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 4 feet at 4 seconds and northeast 3 feet at 12 seconds. Winds and seas higher in and near tstms.
Alenuihaha Channel- 402 AM HST Fri Mar 20 2026
TODAY South southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: South 4 feet at 5 seconds and south 3 feet at 13 seconds. Showers with isolated thunderstorms.
TONIGHT South winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: West southwest 4 feet at 5 seconds. Heavy showers with isolated thunderstorms.
SATURDAY South southwest winds 10 to 15 knots, becoming northwest 15 to 20 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: West southwest 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 3 feet at 4 seconds. Heavy showers with isolated thunderstorms.
SUNDAY Southwest winds to 15 knots. Seas 4 to 5 feet. Wave Detail: Southwest 3 feet at 4 seconds and south southwest 3 feet at 16 seconds. Heavy showers with isolated thunderstorms.
SUNDAY NIGHT Southwest winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: West 3 feet at 4 seconds. Scattered showers.
MONDAY North northeast winds 10 to 15 knots, becoming northeast 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: Northeast 5 feet at 5 seconds and north northeast 3 feet at 11 seconds. Scattered showers.
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 6 feet at 6 seconds and north northeast 4 feet at 11 seconds. Scattered showers. Winds and seas higher in and near tstms.
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