FZHW50 PHFO 202051 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 1051 AM HST Mon Apr 20 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 1051 AM HST Mon Apr 20 2026 .Synopsis for Hawaiian coastal waters... Weak to locally moderate east southeasterly flow will prevail through early Wednesday as a series of low pressure troughs pass northwest and north of the islands. Moderate to fresh northeast trade winds return on Thursday and last into the weekend as high pressure builds north of the state.
Maui County Windward Waters- 1051 AM HST Mon Apr 20 2026
REST OF TODAY East southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East southeast 4 feet at 7 seconds. Isolated showers.
TONIGHT East southeast winds 10 to 15 knots. Seas to 5 feet. Wave Detail: East southeast 3 feet at 7 seconds and north northeast 3 feet at 8 seconds. Isolated showers.
TUESDAY East southeast winds 10 to 15 knots. Seas to 5 feet. Wave Detail: East southeast 3 feet at 7 seconds and north northeast 3 feet at 8 seconds.
TUESDAY NIGHT East winds 7 to 10 knots. Seas 5 to 6 feet. Wave Detail: North northeast 4 feet at 15 seconds, east southeast 3 feet at 7 seconds and northwest 3 feet at 13 seconds.
WEDNESDAY East northeast winds 7 to 10 knots. Seas 5 to 6 feet. Wave Detail: North northeast 5 feet at 13 seconds and north northwest 3 feet at 14 seconds.
WEDNESDAY NIGHT East northeast winds 10 to 15 knots. Seas to 5 feet. Wave Detail: North northeast 4 feet at 11 seconds and north northwest 3 feet at 12 seconds.
THURSDAY East northeast winds to 15 knots. Seas 4 to 6 feet. Wave Detail: North northeast 4 feet at 10 seconds, east southeast 3 feet at 7 seconds and northwest 3 feet at 15 seconds.
FRIDAY East northeast winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 4 feet at 5 seconds, north northeast 3 feet at 9 seconds and northwest 3 feet at 13 seconds. Isolated showers after midnight.
Maui County Leeward Waters- 1051 AM HST Mon Apr 20 2026
REST OF TODAY East southeast winds 15 to 20 knots, becoming southeast 10 to 15 knots this afternoon. Seas 3 to 4 feet. Wave Detail: East southeast 4 feet at 5 seconds. Isolated showers.
TONIGHT Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East southeast 3 feet at 5 seconds. Isolated showers.
TUESDAY Southeast winds 10 to 15 knots, veering to south southwest 7 to 10 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: East southeast 3 feet at 5 seconds.
TUESDAY NIGHT Northeast winds 7 to 10 knots. Seas 3 to 4 feet.
WEDNESDAY Northeast winds 7 to 10 knots, becoming 10 to 15 knots in the afternoon. Seas 3 to 4 feet.
WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Seas 3 to 4 feet.
THURSDAY Northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds.
FRIDAY Northeast winds 10 to 15 knots, rising to 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds.
Maalaea Bay- 1051 AM HST Mon Apr 20 2026
REST OF TODAY North northeast winds to 20 knots. Seas to 2 feet or less. Isolated showers.
TONIGHT North winds to 20 knots, becoming north northeast after midnight. Seas to 2 feet or less. Isolated showers in the evening.
TUESDAY North northeast winds to 15 knots, becoming south southwest 7 to 10 knots in the afternoon. Seas to 2 feet or less.
TUESDAY NIGHT North northeast winds 10 to 15 knots. Seas to 2 feet or less.
WEDNESDAY North northeast winds to 15 knots, becoming north in the afternoon. Seas to 2 feet or less.
WEDNESDAY NIGHT North winds to 20 knots, easing to 15 knots after midnight. Seas to 2 feet or less.
THURSDAY North winds to 20 knots, rising to 25 knots in the afternoon and evening, easing to 20 knots after midnight. Seas to 2 feet or less.
FRIDAY North winds to 20 knots, rising to 25 knots. Seas to 2 feet or less.
Pailolo Channel- 1051 AM HST Mon Apr 20 2026
REST OF TODAY East northeast winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds. Isolated showers.
TONIGHT East northeast winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds. Isolated showers.
TUESDAY East northeast winds 10 to 15 knots. Seas 3 to 4 feet.
TUESDAY NIGHT East northeast winds 10 to 15 knots. Seas 3 to 4 feet.
WEDNESDAY Northeast winds 10 to 15 knots, becoming east northeast 15 to 20 knots in the afternoon. Seas 3 to 4 feet.
WEDNESDAY NIGHT East northeast winds 15 to 20 knots. Seas 3 to 4 feet.
THURSDAY Northeast winds 15 to 20 knots, rising to 20 to 25 knots in the afternoon and evening, then becoming east northeast 15 to 20 knots after midnight. Seas 3 to 4 feet.
FRIDAY Northeast winds 15 to 20 knots, becoming east northeast 20 to 25 knots. Seas 3 to 4 feet. Wave Detail: East northeast 3 feet at 5 seconds.
Alenuihaha Channel- 1051 AM HST Mon Apr 20 2026
REST OF TODAY East winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers.
TONIGHT East winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at 5 seconds. Isolated showers.
TUESDAY East winds 10 to 15 knots, backing to east northeast 7 to 10 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: East 3 feet at 5 seconds.
TUESDAY NIGHT East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: North northeast 3 feet at 15 seconds.
WEDNESDAY East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: North northeast 3 feet at 13 seconds.
WEDNESDAY NIGHT East northeast winds to 15 knots. Seas 3 to 5 feet. Wave Detail: North northeast 3 feet at 11 seconds.
THURSDAY Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 3 feet at 5 seconds.
FRIDAY Northeast winds 15 to 20 knots, becoming east northeast 20 to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds.
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