FZHW50 PHFO 201317 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 316 AM HST Tue Jan 20 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 316 AM HST Tue Jan 20 2026 .Synopsis for Hawaiian coastal waters... A cold front approaching will advance down the island chain tonight into Wednesday, then stall and weaken around Maui County by Thursday. High pressure will gradually build north of the area late Thursday into Friday, followed by another frontal system approaching this weekend.
Maui County Windward Waters- 317 AM HST Tue Jan 20 2026
TODAY Southeast winds 15 to 20 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds, northwest 4 feet at 15 seconds and north northwest 3 feet at 12 seconds. Isolated showers this morning.
TONIGHT South southeast winds 10 to 15 knots, veering to south 7 to 10 knots after midnight. Seas 6 to 7 feet. Wave Detail: Northwest 6 feet at 13 seconds and east 4 feet at 7 seconds. Isolated showers.
WEDNESDAY East southeast winds 7 to 10 knots. Seas 7 to 9 feet. Wave Detail: Northwest 7 feet at 15 seconds, east 4 feet at 7 seconds and north northwest 3 feet at 12 seconds. Isolated showers.
WEDNESDAY NIGHT East northeast winds to 10 knots. Seas 7 to 9 feet. Wave Detail: Northwest 9 feet at 14 seconds and east 3 feet at 7 seconds. Isolated showers in the evening, then scattered showers after midnight.
THURSDAY East northeast winds to 10 knots. Seas 8 to 9 feet. Wave Detail: Northwest 9 feet at 13 seconds and east 3 feet at 7 seconds. Scattered showers.
THURSDAY NIGHT East northeast winds 10 to 15 knots. Seas 7 to 9 feet. Wave Detail: Northwest 8 feet at 13 seconds and east southeast 3 feet at 8 seconds. Scattered showers.
FRIDAY East winds 10 to 15 knots. Seas 6 to 9 feet. Wave Detail: North northwest 8 feet at 13 seconds and east southeast 3 feet at 8 seconds. Scattered showers.
SATURDAY Southeast winds 10 to 15 knots. Seas 5 to 6 feet. Wave Detail: Northwest 5 feet at 17 seconds and east 3 feet at 7 seconds. Scattered showers.
Maui County Leeward Waters- 317 AM HST Tue Jan 20 2026
TODAY East winds 10 to 15 knots, veering to south southeast 7 to 10 knots this afternoon. Seas 3 to 4 feet. Wave Detail: East southeast 3 feet at 5 seconds. Isolated showers this morning.
TONIGHT South southwest winds 7 to 10 knots in the evening, becoming variable less than 10 knots. Seas 3 to 4 feet. Wave Detail: Northwest 3 feet at 8 seconds and west northwest 3 feet at 14 seconds.
WEDNESDAY Winds variable less than 10 knots, becoming northeast 7 to 10 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds and west northwest 3 feet at 15 seconds. Isolated showers.
WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: West northwest 3 feet at 14 seconds. Isolated showers in the evening. Scattered showers after midnight.
THURSDAY North northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Northwest 3 feet at 13 seconds. Isolated showers.
THURSDAY NIGHT Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Northwest 3 feet at 12 seconds. Isolated showers.
FRIDAY East winds 7 to 10 knots, backing to east northeast 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: North northwest 4 feet at 12 seconds. Scattered showers.
SATURDAY East southeast winds to 10 knots, veering to south 7 to 10 knots. Seas 3 to 4 feet. Scattered showers.
Maalaea Bay- 317 AM HST Tue Jan 20 2026
TODAY Winds variable less than 10 knots, becoming south southwest 7 to 10 knots this afternoon. Seas to 2 feet or less.
TONIGHT Winds variable less than 10 knots. Seas to 2 feet or less.
WEDNESDAY Winds variable less than 10 knots. Seas to 2 feet or less.
WEDNESDAY NIGHT North northeast winds to 15 knots, becoming northeast 7 to 10 knots after midnight. Seas to 2 feet or less.
THURSDAY Northeast winds 7 to 10 knots, becoming north northeast to 15 knots in the afternoon. Seas to 2 feet or less. Isolated showers in the afternoon.
THURSDAY NIGHT North northeast winds 10 to 15 knots. Seas to 2 feet or less.
FRIDAY Northeast winds 10 to 15 knots. Seas to 2 feet or less.
SATURDAY North northeast winds 10 to 15 knots in the morning, becoming variable less than 10 knots. Seas to 2 feet or less. Isolated showers in the morning, then scattered showers.
Pailolo Channel- 317 AM HST Tue Jan 20 2026
TODAY East winds 10 to 15 knots, veering to west southwest 7 to 10 knots this afternoon. Seas to 3 feet. Isolated showers this afternoon.
TONIGHT West winds 7 to 10 knots in the evening, becoming variable less than 10 knots. Seas to 3 feet. Isolated showers in the evening.
WEDNESDAY Winds variable less than 10 knots, becoming east northeast 7 to 10 knots in the afternoon. Seas to 2 feet or less. Isolated showers.
WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Seas to 2 feet or less, then to 3 feet after midnight. Isolated showers.
THURSDAY Northeast winds 10 to 15 knots. Seas to 3 feet. Isolated showers.
THURSDAY NIGHT East northeast winds 10 to 15 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 through the night. Scattered showers in the evening, then isolated showers after midnight.
SATURDAY East southeast winds 10 to 15 knots, veering to south southeast 7 to 10 knots. Seas to 3 feet. Scattered showers.
Alenuihaha Channel- 317 AM HST Tue Jan 20 2026
TODAY East winds 15 to 20 knots, becoming south southeast 10 to 15 knots this afternoon. Seas 3 to 4 feet. Wave Detail: East 4 feet at 6 seconds. Isolated showers this morning.
TONIGHT West winds 7 to 10 knots, veering to north northeast after midnight. Seas 3 to 4 feet. Wave Detail: East 4 feet at 7 seconds and west northwest 3 feet at 14 seconds.
WEDNESDAY East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East northeast 3 feet at 7 seconds and west northwest 3 feet at 15 seconds.
WEDNESDAY NIGHT East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: West northwest 4 feet at 14 seconds and east 3 feet at 7 seconds. Isolated showers.
THURSDAY Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: West northwest 4 feet at 13 seconds and east 3 feet at 7 seconds. Isolated showers.
THURSDAY NIGHT East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 8 seconds and northwest 3 feet at 13 seconds. Isolated showers.
FRIDAY East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 8 seconds and northwest 3 feet at 12 seconds. Isolated showers through the night, then scattered showers through the day.
SATURDAY East winds to 15 knots, veering to east southeast. Seas 3 to 4 feet. Scattered showers.
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