FZHW50 PHFO 190107 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 307 PM HST Sun Oct 18 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 307 PM HST Sun Oct 18 2026 .Synopsis for Hawaiian coastal waters... Robust surface high pressure centered far north of Hawaii will maintain fresh to strong trade winds into Tuesday. Trades will steadily decrease late Tuesday and Wednesday as the high weakens and moves eastward. Trade winds will lower to gentle strength, or may become disrupted, as a low passes to the north Thursday and Friday.
Maui County Windward Waters- 307 PM HST Sun Oct 18 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...
TONIGHT East winds 20 to 25 knots. Seas 7 to 9 feet. Wave Detail: East 8 feet at 7 seconds and north 3 feet at 13 seconds. Scattered showers.
MONDAY East winds 20 to 25 knots. Seas 7 to 9 feet. Wave Detail: East 8 feet at 7 seconds and north northwest 3 feet at 11 seconds. Scattered showers.
MONDAY NIGHT East winds 20 to 25 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 7 seconds. Scattered showers in the evening. Isolated showers after midnight.
TUESDAY East winds to 20 knots. Seas 6 to 8 feet. Wave Detail: East 7 feet at 7 seconds. Isolated showers.
TUESDAY NIGHT East winds to 20 knots. Seas 6 to 7 feet. Wave Detail: East 7 feet at 7 seconds. Isolated showers in the evening. Scattered showers after midnight.
WEDNESDAY East winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: East 7 feet at 7 seconds. Scattered showers.
WEDNESDAY NIGHT East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers in the evening. Isolated showers after midnight.
THURSDAY East winds 10 to 15 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 6 seconds and northwest 3 feet at 11 seconds. Scattered showers.
FRIDAY East winds to 10 knots. Seas 5 to 6 feet. Wave Detail: East 4 feet at 12 seconds and northwest 3 feet at 11 seconds. Isolated showers, then scattered showers after midnight.
Maui County Leeward Waters- 307 PM HST Sun Oct 18 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...
TONIGHT East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 6 seconds.
MONDAY East northeast winds 20 to 25 knots, easing to 15 to 20 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: East 6 feet at 6 seconds.
MONDAY NIGHT East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds.
TUESDAY East northeast winds 10 to 15 knots, rising to 15 to 20 knots in the afternoon. Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds.
TUESDAY NIGHT East northeast winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 5 feet at 6 seconds.
WEDNESDAY East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East southeast 5 feet at 6 seconds.
WEDNESDAY NIGHT East northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East southeast 4 feet at 6 seconds.
THURSDAY Northeast winds 7 to 10 knots, backing to north northwest in the afternoon, veering to east northeast. Seas to 3 feet. Wave Detail: East southeast 3 feet at 5 seconds.
FRIDAY Northeast winds 7 to 10 knots in the morning, becoming variable less than 10 knots, then becoming northeast 7 to 10 knots. Seas 3 to 4 feet. Isolated showers after midnight.
Maalaea Bay- 307 PM HST Sun Oct 18 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...
TONIGHT North winds to 25 knots. Seas to 2 feet or less. Wave Detail: North northeast 2 feet at 3 seconds.
MONDAY North northeast winds to 25 knots. Seas to 2 feet or less. Wave Detail: North northeast 2 feet at 3 seconds.
MONDAY NIGHT North northeast winds to 25 knots. Seas to 2 feet or less.
TUESDAY North winds to 25 knots. Seas to 2 feet or less.
TUESDAY NIGHT North winds to 25 knots. Seas to 2 feet or less.
WEDNESDAY North northeast winds to 25 knots. Seas to 2 feet or less.
WEDNESDAY NIGHT North winds to 25 knots, easing to 20 knots after midnight. Seas to 2 feet or less.
THURSDAY North winds to 15 knots, rising to 20 knots in the evening, easing to 15 knots after midnight. Seas to 2 feet or less.
FRIDAY North winds to 15 knots, rising to 20 knots in the evening, easing to 15 knots after midnight. Seas to 2 feet or less.
Pailolo Channel- 307 PM HST Sun Oct 18 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...
TONIGHT East northeast winds to 25 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 5 seconds. Isolated showers.
MONDAY East northeast winds 20 to 25 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers in the morning.
MONDAY NIGHT East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 5 feet at 7 seconds.
TUESDAY East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 5 feet at 7 seconds.
TUESDAY NIGHT East northeast winds 20 to 25 knots. Seas 4 to 6 feet. Wave Detail: East northeast 4 feet at 7 seconds.
WEDNESDAY East northeast winds 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 7 seconds.
WEDNESDAY NIGHT East northeast winds 20 to 25 knots, becoming east 15 to 20 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 3 feet at 6 seconds.
THURSDAY East 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 4 feet.
FRIDAY East northeast winds 10 to 15 knots, rising to 15 to 20 knots in the evening, easing to 10 to 15 knots after midnight. Seas to 3 feet.
Alenuihaha Channel- 307 PM HST Sun Oct 18 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY TUESDAY MORNING...
TONIGHT East northeast winds 25 to 30 knots. Seas 7 to 9 feet. Wave Detail: East northeast 8 feet at 7 seconds. Scattered showers.
MONDAY East northeast winds 25 to 30 knots. Seas 6 to 8 feet. Wave Detail: East northeast 8 feet at 7 seconds. Scattered showers.
MONDAY NIGHT East northeast winds to 25 knots. Seas 6 to 8 feet. Wave Detail: East northeast 7 feet at 7 seconds. Scattered showers in the evening.
TUESDAY East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East northeast 7 feet at 7 seconds.
TUESDAY NIGHT East northeast winds 20 to 25 knots. Seas 6 to 8 feet. Wave Detail: East northeast 7 feet at 7 seconds.
WEDNESDAY East northeast winds 20 to 25 knots, easing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: East northeast 7 feet at 7 seconds.
WEDNESDAY NIGHT East northeast winds 20 to 25 knots, becoming east 15 to 20 knots after midnight. Seas 4 to 6 feet. Wave Detail: East 6 feet at 6 seconds. Isolated showers in the evening.
THURSDAY East northeast winds 10 to 15 knots, rising to 15 to 20 knots in the evening, then becoming east 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers in the evening.
FRIDAY East 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 12 seconds. Scattered showers in the evening. Isolated showers after midnight.
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