Coastal Waters Forecast for Alenuihaha Channel (PHZ121) (Text-Only)
NWS Forecast for: Alenuihaha Channel (PHZ121)
Issued by: National Weather Service Honolulu, HI
Last Update: 334 PM HST Tue Sep 1 2026
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Tonight: East northeast winds 25 to 30 knots, easing to 20 to 25 knots after midnight. Seas 7 to 10 feet. Wave detail: east northeast 8 feet at 7 seconds and south southwest 3 feet at 17 seconds. Isolated showers this evening. Scattered showers after midnight.

Wednesday: East northeast winds 20 to 25 knots, rising to 25 to 30 knots in the afternoon. Seas 6 to 7 feet, building to 6 to 9 feet in the afternoon. Wave detail: east 7 feet at 7 seconds and south southwest 4 feet at 16 seconds. Isolated showers in the morning. Scattered showers in the afternoon.

Wednesday Night: East northeast winds 25 to 30 knots. Seas 8 to 11 feet. Wave detail: east 9 feet at 7 seconds, south southeast 4 feet at 12 seconds and south southwest 4 feet at 15 seconds. Isolated showers.

Thursday: East northeast winds to 30 knots. Seas 8 to 11 feet, building to 9 to 13 feet in the afternoon. Wave detail: east northeast 11 feet at 7 seconds, south 5 feet at 14 seconds and south southeast 4 feet at 11 seconds. Isolated showers in the morning.

Thursday Night: East northeast winds to 30 knots. Seas 9 to 13 feet. Wave detail: east northeast 11 feet at 7 seconds, south 5 feet at 11 seconds and east 3 feet at 14 seconds. Isolated showers.

Friday: East northeast winds 25 to 30 knots. Seas 10 to 13 feet, subsiding to 8 to 11 feet in the afternoon. Wave detail: east northeast 11 feet at 7 seconds, south southwest 5 feet at 11 seconds and east 3 feet at 13 seconds. Isolated showers.

Friday Night: East northeast winds 25 to 30 knots. Seas 5 to 8 feet. Wave detail: south southwest 5 feet at 10 seconds and east 5 feet at 13 seconds. Scattered showers.

Saturday: East northeast winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 5 to 8 feet. Wave detail: east 6 feet at 13 seconds and southwest 4 feet at 9 seconds. Scattered showers through the night. Isolated showers through the day.

Sunday: East northeast winds 15 to 20 knots, easing to 10 to 15 knots after midnight. Seas 5 to 8 feet. Wave detail: east 6 feet at 12 seconds and south southwest 4 feet at 18 seconds. Isolated showers through the night. Scattered showers through the day.







Zone Forecast: Alenuihaha Channel (PHZ121)

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