FZHW50 PHFO 301320 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 319 AM HST Sun Nov 30 2025 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 319 AM HST Sun Nov 30 2025 .Synopsis for Hawaiian coastal waters... A ridge of high pressure will dominate over or just north of the Hawaiian Islands into early this week. A cold front will approach the western islands on Wednesday, but may weaken to a trough and retreat back westward before having much effect on the local weather. By late this week into next weekend, strengthening surface high pressure northeast of the islands will bring a return of easterly trades. An extra large northwest swell will peak this morning across the Hawaiian waters, then slowly decline through Monday. This swell will bring seas above Small Craft Advisory levels for exposed waters.
Kauai Northwest Waters- 320 AM HST Sun Nov 30 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...
TODAY South southeast winds 7 to 10 knots. Seas 14 to 17 feet. Wave Detail: Northwest 17 feet at 16 seconds. Isolated showers this morning. Hazy.
TONIGHT South southeast winds to 10 knots. Seas 12 to 15 feet. Wave Detail: Northwest 15 feet at 15 seconds. Hazy.
MONDAY South winds 7 to 10 knots. Seas 10 to 12 feet, subsiding to 8 to 10 feet in the afternoon. Wave Detail: North northwest 12 feet at 15 seconds. Hazy.
MONDAY NIGHT Winds variable less than 10 knots. Seas 7 to 9 feet. Wave Detail: North northwest 8 feet at 14 seconds. Hazy.
TUESDAY Winds variable less than 10 knots. Seas 7 to 8 feet. Wave Detail: North northwest 8 feet at 13 seconds.
TUESDAY NIGHT Winds variable less than 10 knots. Seas 8 to 9 feet. Wave Detail: Northwest 9 feet at 13 seconds. Isolated showers in the evening, then scattered showers after midnight.
WEDNESDAY Winds variable less than 10 knots, becoming east 10 to 15 knots. Seas 9 to 12 feet. Wave Detail: Northwest 12 feet at 14 seconds. Scattered showers in the morning, then numerous showers through the night. Scattered showers after midnight.
THURSDAY South southeast winds 10 to 15 knots, becoming east southeast 15 to 20 knots. Seas 9 to 12 feet. Wave Detail: North northwest 12 feet at 14 seconds. Scattered showers.
Kauai Windward Waters- 320 AM HST Sun Nov 30 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...
TODAY Southeast winds 7 to 10 knots, becoming 10 to 15 knots this afternoon. Seas 15 to 17 feet. Wave Detail: Northwest 17 feet at 17 seconds. Hazy.
TONIGHT Southeast winds 7 to 10 knots. Seas 13 to 15 feet. Wave Detail: Northwest 15 feet at 15 seconds. Hazy in the evening.
MONDAY Southeast winds 7 to 10 knots. Seas 10 to 12 feet, subsiding to 9 to 10 feet in the afternoon. Wave Detail: North northwest 12 feet at 15 seconds.
MONDAY NIGHT Winds variable less than 10 knots, becoming southeast 7 to 10 knots after midnight. Seas to 8 feet, subsiding to 6 to 7 feet after midnight. Wave Detail: North northwest 8 feet at 14 seconds.
TUESDAY Southeast winds 7 to 10 knots. Seas 6 to 8 feet. Wave Detail: North northwest 7 feet at 13 seconds.
TUESDAY NIGHT Winds variable less than 10 knots. Seas 6 to 8 feet, building to 8 to 9 feet after midnight. Wave Detail: Northwest 9 feet at 13 seconds. Isolated showers after midnight.
WEDNESDAY Winds variable less than 10 knots, becoming east southeast to 15 knots. Seas 9 to 12 feet. Wave Detail: Northwest 12 feet at 14 seconds. Scattered showers.
THURSDAY Southeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas 9 to 12 feet. Wave Detail: North northwest 12 feet at 14 seconds and east 3 feet at 7 seconds. Scattered showers.
Kauai Leeward Waters- 320 AM HST Sun Nov 30 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...
TODAY Southeast winds 7 to 10 knots. Seas 10 to 14 feet. Wave Detail: Northwest 14 feet at 16 seconds. Isolated showers this morning. Hazy.
TONIGHT Southeast winds 7 to 10 knots. Seas 9 to 13 feet, subsiding to 8 to 11 feet after midnight. Wave Detail: Northwest 13 feet at 15 seconds. Hazy.
MONDAY Southeast winds 7 to 10 knots in the morning, becoming variable less than 10 knots. Seas 6 to 9 feet. Wave Detail: North northwest 9 feet at 15 seconds. Hazy.
MONDAY NIGHT Winds variable less than 10 knots. Seas 5 to 7 feet. Wave Detail: North northwest 7 feet at 14 seconds. Hazy.
TUESDAY Winds variable less than 10 knots. Seas 4 to 6 feet. Wave Detail: North northwest 6 feet at 13 seconds.
TUESDAY NIGHT Winds variable less than 10 knots. Seas 6 to 9 feet. Wave Detail: Northwest 9 feet at 13 seconds. Isolated showers in the evening. Scattered showers after midnight.
WEDNESDAY Winds variable less than 10 knots, becoming east 10 to 15 knots. Seas 7 to 10 feet. Wave Detail: Northwest 10 feet at 14 seconds. Scattered showers.
THURSDAY Southeast winds to 10 knots, rising to 15 to 20 knots. Seas 7 to 10 feet. Wave Detail: North northwest 10 feet at 15 seconds. Scattered showers.
Kauai Channel- 320 AM HST Sun Nov 30 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...
TODAY East winds 7 to 10 knots. Seas 8 to 11 feet. Wave Detail: Northwest 9 feet at 17 seconds. Hazy.
TONIGHT East southeast winds 7 to 10 knots in the evening, becoming variable less than 10 knots. Seas 7 to 10 feet. Wave Detail: Northwest 9 feet at 15 seconds. Hazy.
MONDAY East southeast winds 7 to 10 knots in the morning, becoming variable less than 10 knots. Seas 5 to 8 feet. Wave Detail: North northwest 8 feet at 15 seconds. Hazy.
MONDAY NIGHT Winds variable less than 10 knots. Seas 5 to 7 feet. Wave Detail: North northwest 6 feet at 14 seconds. Hazy.
TUESDAY Winds variable less than 10 knots. Seas 4 to 6 feet. Wave Detail: North northwest 5 feet at 13 seconds.
TUESDAY NIGHT Winds variable less than 10 knots. Seas 5 to 7 feet. Wave Detail: North northwest 6 feet at 13 seconds.
WEDNESDAY Winds variable less than 10 knots, becoming east 10 to 15 knots. Seas 5 to 7 feet. Wave Detail: Northwest 7 feet at 14 seconds. Scattered showers.
THURSDAY East southeast winds 10 to 15 knots. Seas 5 to 8 feet. Wave Detail: North northwest 8 feet at 15 seconds. Scattered showers.
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