FZHW50 PHFO 211328 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 327 AM HST Wed Jan 21 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 327 AM HST Wed Jan 21 2026 .Synopsis for Hawaiian coastal waters... Strong northerly winds and elevated rough seas will affect most waters around the smaller islands this morning. Conditions will gradually improve this afternoon and tonight as winds weaken and the front stalls out over Maui County. High pressure will build north of the islands Thursday into Friday, resulting in moderate easterly trades. Another front will approach over the weekend, causing winds to shift out of the southeast and south, bringing the potential for some heavier rain and even a few thunderstorms.
Maui County Windward Waters- 327 AM HST Wed Jan 21 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS MORNING...
TODAY Northwest winds 15 to 20 knots, becoming north northeast 10 to 15 knots this afternoon. Seas 6 to 9 feet. Wave Detail: Northwest 6 feet at 15 seconds. Scattered showers.
TONIGHT East northeast winds 10 to 15 knots. Seas 6 to 7 feet, building to 6 to 9 feet after midnight. Wave Detail: Northwest 7 feet at 14 seconds. Scattered showers.
THURSDAY Northeast winds 10 to 15 knots. Seas 8 to 9 feet. Wave Detail: Northwest 8 feet at 13 seconds. Scattered showers.
THURSDAY NIGHT East northeast winds 10 to 15 knots. Seas 8 to 9 feet. Wave Detail: North northwest 8 feet at 13 seconds. Scattered showers.
FRIDAY East northeast winds 10 to 15 knots. Seas 8 to 9 feet. Wave Detail: North northwest 8 feet at 12 seconds. Scattered showers.
FRIDAY NIGHT East winds 10 to 15 knots. Seas 6 to 8 feet. Wave Detail: North northwest 6 feet at 11 seconds. Scattered showers.
SATURDAY South southeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: Northwest 5 feet at 10 seconds. Scattered showers.
SUNDAY Southwest winds 10 to 15 knots, veering to northwest after midnight. Seas 4 to 5 feet. Wave Detail: Northwest 3 feet at 14 seconds. Scattered showers.
Maui County Leeward Waters- 327 AM HST Wed Jan 21 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS MORNING...
TODAY North northwest winds 20 to 25 knots, becoming north northeast 15 to 20 knots this afternoon. Seas 3 to 4 feet. Wave Detail: West northwest 3 feet at 14 seconds. Scattered showers.
TONIGHT Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: West northwest 3 feet at 14 seconds. Scattered showers.
THURSDAY North northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Northwest 4 feet at 13 seconds. Scattered showers.
THURSDAY NIGHT Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Northwest 4 feet at 12 seconds. Isolated showers.
FRIDAY East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: North northwest 4 feet at 12 seconds. Scattered showers.
FRIDAY NIGHT East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: North northwest 3 feet at 11 seconds. Scattered showers.
SATURDAY Southeast winds 10 to 15 knots, veering to south. Seas 3 to 4 feet. Scattered showers.
SUNDAY Southwest winds to 10 knots, veering to northwest after midnight. Seas to 3 feet. Scattered showers .
Maalaea Bay- 327 AM HST Wed Jan 21 2026
TODAY Winds variable less than 10 knots, becoming north northeast 7 to 10 knots this afternoon. Seas to 2 feet or less. Isolated showers this morning, then scattered showers this afternoon.
TONIGHT North northeast winds 10 to 15 knots. Seas to 2 feet or less.
THURSDAY North northeast winds 10 to 15 knots, becoming north 15 to 20 knots in the afternoon. Seas to 2 feet or less. Isolated showers in the afternoon.
THURSDAY NIGHT North winds to 20 knots, easing to 15 knots after midnight. Seas to 2 feet or less.
FRIDAY North winds to 15 knots. Seas to 2 feet or less.
FRIDAY NIGHT North winds to 20 knots. Seas to 2 feet or less.
SATURDAY Winds variable less than 10 knots. Seas to 2 feet or less. Isolated showers in the morning, then scattered showers.
SUNDAY Winds variable less than 10 knots, becoming west southwest to 10 knots in the afternoon and evening, then becoming variable less than 10 knots after midnight. Seas to 2 feet or less. Scattered showers .
Pailolo Channel- 327 AM HST Wed Jan 21 2026
TODAY North northeast winds 10 to 15 knots. Seas to 3 feet this morning, then to 2 feet or less. Scattered showers.
TONIGHT Northeast winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas to 2 feet or less, then to 3 feet after midnight. Scattered showers.
THURSDAY North northeast winds 15 to 20 knots, becoming northeast 10 to 15 knots in the afternoon. Seas to 3 feet. Scattered showers.
THURSDAY NIGHT East northeast winds 15 to 20 knots. Seas to 3 feet. Isolated showers in the evening. Scattered showers after midnight.
FRIDAY East northeast winds 10 to 15 knots. Seas to 3 feet. Isolated showers.
FRIDAY NIGHT East northeast winds 15 to 20 knots. Seas to 3 feet. Scattered showers, mainly in the evening.
SATURDAY East winds to 10 knots, veering to south southwest. Seas to 3 feet. Scattered showers.
SUNDAY Southwest winds 10 to 15 knots, veering to west northwest 7 to 10 knots after midnight. Seas to 2 feet or less. Scattered showers .
Alenuihaha Channel- 327 AM HST Wed Jan 21 2026
TODAY Winds variable less than 10 knots, becoming northeast 7 to 10 knots this afternoon. Seas 3 to 4 feet. Wave Detail: West northwest 3 feet at 14 seconds. Isolated showers this morning, then scattered showers this afternoon.
TONIGHT East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: West northwest 4 feet at 14 seconds. Scattered showers.
THURSDAY Northeast winds 10 to 15 knots, becoming north northeast 15 to 20 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: West northwest 4 feet at 14 seconds. Scattered showers.
THURSDAY NIGHT East northeast winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: West northwest 3 feet at 13 seconds. Isolated showers.
FRIDAY East northeast winds to 15 knots. Seas 3 to 4 feet. Wave Detail: Northwest 3 feet at 12 seconds. Isolated showers.
FRIDAY NIGHT East northeast winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: Northwest 3 feet at 11 seconds. Scattered showers.
SATURDAY East winds 15 to 20 knots, becoming southeast 10 to 15 knots. Seas 3 to 4 feet. Scattered showers.
SUNDAY Southwest winds 10 to 15 knots, veering to west after midnight. Seas to 3 feet. Scattered showers in the morning, then isolated showers in the afternoon. Scattered showers through the day.
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