FZHW50 PHFO 231321 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 321 AM HST Mon Mar 23 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 321 AM HST Mon Mar 23 2026 .Synopsis for Hawaiian coastal waters... A trough lingering over the waters will result in return bands of light to moderate showers, with an occasional embedded storm or strong shower, that will pass across from the south. The associated surface low exiting northeast Monday and allow strong high pressure to the north to reestablish trade flow.
Maui County Windward Waters- 321 AM HST Mon Mar 23 2026
TODAY Northeast winds 10 to 15 knots, rising to 15 to 20 knots this afternoon. Seas 5 to 7 feet. Wave Detail: North northeast 5 feet at 5 seconds, north northeast 4 feet at 9 seconds and northwest 3 feet at 13 seconds. Scattered heavy showers with isolated thunderstorms.
TONIGHT Northeast winds to 20 knots. Seas 6 to 8 feet. Wave Detail: Northeast 5 feet at 5 seconds, north 5 feet at 9 seconds and northwest 3 feet at 12 seconds. Scattered showers.
TUESDAY Northeast winds to 20 knots. Seas 7 to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds and north 5 feet at 10 seconds. Scattered showers.
TUESDAY NIGHT East northeast winds to 20 knots. Seas 7 to 9 feet. Wave Detail: Northeast 6 feet at 6 seconds and north 6 feet at 9 seconds. Scattered showers.
WEDNESDAY East northeast winds 15 to 20 knots. Seas 7 to 9 feet. Wave Detail: East northeast 6 feet at 6 seconds and north northeast 6 feet at 9 seconds. Scattered showers in the morning. Isolated showers in the afternoon.
WEDNESDAY NIGHT East northeast winds 15 to 20 knots. Seas 7 to 8 feet. Wave Detail: East 5 feet at 6 seconds, north northeast 5 feet at 9 seconds and northwest 3 feet at 16 seconds. Scattered showers in the evening. Isolated showers after midnight.
THURSDAY East northeast winds 15 to 20 knots. Seas 6 to 7 feet. Wave Detail: Northeast 5 feet at 9 seconds, east southeast 4 feet at 5 seconds and northwest 3 feet at 14 seconds. Isolated showers.
FRIDAY East northeast winds 15 to 20 knots. Seas 6 to 7 feet. Wave Detail: East southeast 4 feet at 5 seconds, northeast 4 feet at 9 seconds and northwest 3 feet at 12 seconds. Isolated showers. Scattered showers after midnight. Winds and seas higher in and near tstms.
Maui County Leeward Waters- 321 AM HST Mon Mar 23 2026
TODAY Northeast winds 10 to 15 knots, rising to 20 to 25 knots this afternoon. Seas 3 to 5 feet. Wave Detail: North 3 feet at 5 seconds. Scattered showers this morning, then isolated showers and thunderstorms this afternoon.
TONIGHT Northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: North northeast 3 feet at 5 seconds and north 3 feet at 9 seconds. Isolated showers in the evening.
TUESDAY Northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: North northeast 4 feet at 5 seconds and north 3 feet at 10 seconds.
TUESDAY NIGHT Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: North northeast 4 feet at 5 seconds and north 3 feet at 9 seconds.
WEDNESDAY Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 5 seconds and north 3 feet at 9 seconds.
WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and north 3 feet at 9 seconds.
THURSDAY 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: East 3 feet at 5 seconds.
FRIDAY 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: East 4 feet at 5 seconds. Winds and seas higher in and near tstms.
Maalaea Bay- 321 AM HST Mon Mar 23 2026
TODAY North northeast winds 10 to 15 knots, becoming north 20 to 25 knots this afternoon. Seas to 2 feet or less. Scattered heavy showers. Isolated thunderstorms this afternoon.
TONIGHT North northeast winds to 25 knots. Seas to 2 feet or less. Isolated showers in the evening.
TUESDAY North northeast winds 25 to 30 knots. Seas to 2 feet or less. Wave Detail: North northeast 2 feet at 3 seconds.
TUESDAY NIGHT North winds to 25 knots. Seas to 2 feet or less. Wave Detail: North northeast 2 feet at 3 seconds.
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 northeast winds to 20 knots, becoming north in the afternoon and evening, easing to 20 knots after midnight. Seas to 2 feet or less.
FRIDAY North winds to 25 knots. Seas to 2 feet or less. Winds and seas higher in and near tstms.
Pailolo Channel- 321 AM HST Mon Mar 23 2026
TODAY Northeast winds 10 to 15 knots, rising to 20 to 25 knots this afternoon. Seas 3 to 4 feet. Wave Detail: East northeast 3 feet at 6 seconds. Scattered showers this morning, then isolated showers and thunderstorms this afternoon.
TONIGHT Northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East northeast 3 feet at 5 seconds. Isolated showers.
TUESDAY Northeast winds 20 to 25 knots, becoming east northeast 25 to 30 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: East northeast 4 feet at 4 seconds.
TUESDAY NIGHT Northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East northeast 4 feet at 5 seconds.
WEDNESDAY East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East northeast 3 feet at 6 seconds.
WEDNESDAY NIGHT East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East northeast 3 feet at 6 seconds and east northeast 3 feet at 9 seconds.
THURSDAY East northeast winds 15 to 20 knots, becoming northeast 20 to 25 knots in the afternoon and evening, then becoming east northeast 15 to 20 knots after midnight. Seas 3 to 5 feet. Wave Detail: East northeast 3 feet at 9 seconds.
FRIDAY East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 3 feet at 4 seconds. Winds and seas higher in and near tstms.
Alenuihaha Channel- 321 AM HST Mon Mar 23 2026
TODAY Northeast winds 10 to 15 knots, becoming east northeast 15 to 20 knots this afternoon. Seas 3 to 4 feet. Numerous heavy showers this morning. Isolated thunderstorms. Scattered heavy showers this afternoon.
TONIGHT Northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East northeast 3 feet at 5 seconds. Isolated showers.
TUESDAY Northeast winds 20 to 25 knots, becoming east northeast 25 to 30 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 7 seconds. Scattered showers.
TUESDAY NIGHT Northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 5 feet at 6 seconds and north northeast 3 feet at 9 seconds. Scattered showers.
WEDNESDAY Northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East 4 feet at 5 seconds and north northeast 3 feet at 9 seconds. Scattered showers in the morning. Isolated showers in the afternoon.
WEDNESDAY NIGHT Northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 4 feet at 5 seconds and northeast 3 feet at 9 seconds. Scattered showers in the evening. Isolated showers after midnight.
THURSDAY East northeast winds 15 to 20 knots, becoming northeast 20 to 25 knots in the evening, then becoming east northeast 15 to 20 knots after midnight. Seas 4 to 6 feet. Wave Detail: East 4 feet at 5 seconds and northeast 4 feet at 9 seconds. Isolated showers after midnight.
FRIDAY Northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 5 seconds and northeast 3 feet at 9 seconds. Isolated showers after midnight. Winds and seas higher in and near tstms.
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