FZHW50 PHFO 180120 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 319 PM HST Wed Sep 17 2025 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 319 PM HST Wed Sep 17 2025 .Synopsis for Hawaiian coastal waters... A ridge of high pressure north of the islands will remain nearly stationary over the several days and maintain moderate to locally strong trade winds. A slight increase of our trade winds are expected tonight into Thursday.
Maui County Windward Waters- 320 PM HST Wed Sep 17 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON...
TONIGHT East winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East southeast 6 feet at 6 seconds and north 3 feet at 8 seconds. Isolated showers.
THURSDAY East winds 20 to 25 knots. Seas 6 to 7 feet. Wave Detail: East southeast 6 feet at 6 seconds and north 3 feet at 8 seconds. Isolated showers.
THURSDAY NIGHT East winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: East southeast 6 feet at 6 seconds and north 3 feet at 9 seconds. Scattered showers.
FRIDAY East winds 15 to 20 knots, becoming east northeast 20 to 25 knots in the afternoon. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds and north 3 feet at 9 seconds. Scattered showers.
FRIDAY NIGHT East northeast winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds and north 3 feet at 9 seconds. Scattered showers.
SATURDAY East winds 20 to 25 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds and north 3 feet at 9 seconds. Scattered showers, mainly in the morning.
SATURDAY NIGHT East winds 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds and north northeast 3 feet at 11 seconds. Scattered showers.
SUNDAY East winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds. Scattered showers.
MONDAY East winds 15 to 20 knots, rising to 20 to 25 knots in the afternoon, easing to 15 to 20 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Scattered showers.
Maui County Leeward Waters- 320 PM HST Wed Sep 17 2025
TONIGHT East winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 7 seconds.
THURSDAY East southeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds.
THURSDAY NIGHT East northeast winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 7 seconds. Isolated showers.
FRIDAY East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds.
FRIDAY NIGHT Northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 7 seconds. Scattered showers.
SATURDAY East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds and south southwest 3 feet at 16 seconds. Scattered showers, mainly in the morning.
SATURDAY NIGHT East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 4 feet at 6 seconds and south southwest 3 feet at 15 seconds. Scattered showers.
SUNDAY East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds and south southwest 3 feet at 14 seconds. Isolated showers in the morning. Scattered showers.
MONDAY East northeast winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East southeast 4 feet at 6 seconds. Isolated showers through the night. Scattered showers through the day.
Maalaea Bay- 320 PM HST Wed Sep 17 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON...
TONIGHT North winds 20 to 25 knots. Seas to 2 feet or less.
THURSDAY North winds 20 to 25 knots. Seas to 2 feet or less.
THURSDAY NIGHT North northeast winds 20 to 25 knots. Gusts up to 35 knots in the evening. Seas to 2 feet or less.
FRIDAY North northeast winds 20 to 25 knots. Seas to 2 feet or less.
FRIDAY NIGHT North northeast winds 20 to 25 knots. Seas to 2 feet or less.
SATURDAY North northeast winds 20 to 25 knots. Seas to 2 feet or less. Isolated showers in the afternoon.
SATURDAY NIGHT North northeast winds 20 to 25 knots. Seas to 2 feet or less.
SUNDAY North northeast winds 20 to 25 knots. Seas to 2 feet or less.
MONDAY North northeast winds 20 to 25 knots. Seas to 2 feet or less.
Pailolo Channel- 320 PM HST Wed Sep 17 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON...
TONIGHT East winds to 25 knots. Gusts up to 35 knots this evening. Seas 3 to 5 feet. Wave Detail: East 5 feet at 5 seconds.
THURSDAY East winds to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds.
THURSDAY NIGHT East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers in the evening.
FRIDAY East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. Isolated showers in the afternoon.
FRIDAY NIGHT East northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers.
SATURDAY East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers, mainly in the morning.
SATURDAY NIGHT East northeast winds to 20 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers in the evening.
SUNDAY East northeast winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 4 feet at 4 seconds. Isolated showers after midnight.
MONDAY East northeast winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds. Isolated showers.
Alenuihaha Channel- 320 PM HST Wed Sep 17 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON...
TONIGHT East northeast winds 25 to 30 knots, easing to 20 to 25 knots after midnight. Seas 5 to 8 feet. Wave Detail: East 8 feet at 7 seconds. Isolated showers.
THURSDAY East northeast winds 25 to 30 knots, easing to 20 to 25 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: East 7 feet at 6 seconds. Scattered showers in the morning.
THURSDAY NIGHT East northeast winds 20 to 25 knots. Gusts up to 35 knots in the evening. Seas 5 to 8 feet. Wave Detail: East 7 feet at 6 seconds. Scattered showers.
FRIDAY East northeast winds 25 to 30 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. Isolated showers.
FRIDAY NIGHT East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 7 feet at 6 seconds. Scattered showers.
SATURDAY East northeast winds 20 to 25 knots, rising to 25 to 30 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds and south southwest 3 feet at 16 seconds. Scattered showers.
SATURDAY NIGHT East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds and south southwest 3 feet at 15 seconds. Scattered showers.
SUNDAY East northeast winds 20 to 25 knots, rising to 25 to 30 knots in the afternoon, easing to 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds and south southwest 3 feet at 14 seconds. Scattered showers.
MONDAY East northeast winds 20 to 25 knots. Gusts up to 35 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 5 seconds. Scattered showers in the morning. Isolated showers in the afternoon, then scattered showers through the day.
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