Coastal Waters Forecast for Alenuihaha Channel (PHZ121) (Text-Only)
NWS Forecast for: Alenuihaha Channel (PHZ121)
Issued by: National Weather Service Honolulu, HI
Last Update: 352 PM HST Wed Mar 11 2026




Tonight: South southwest winds to 15 knots. Seas 4 to 6 feet. Wave detail: south southwest 4 feet at 5 seconds and west northwest 3 feet at 10 seconds. A slight chance of thunderstorms with isolated showers.

Thursday: South southwest winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: southwest 3 feet at 4 seconds and west northwest 3 feet at 10 seconds. Numerous heavy showers in the morning. Isolated thunderstorms. Scattered heavy showers in the afternoon.

Thursday Night: South winds 7 to 10 knots, backing to east southeast 10 to 15 knots after midnight. Seas 3 to 4 feet, building to 5 to 7 feet after midnight. Wave detail: south southeast 5 feet at 6 seconds and west northwest 3 feet at 10 seconds. Occasional heavy showers and scattered thunderstorms.

Friday: South southwest winds 20 to 25 knots. Seas 7 to 10 feet. Wave detail: south 8 feet at 7 seconds and west northwest 3 feet at 10 seconds. Occasional heavy showers and scattered thunderstorms.

Friday Night: South winds to 25 knots. Seas 7 to 10 feet, building to 9 to 12 feet after midnight. Wave detail: west southwest 11 feet at 8 seconds and west northwest 3 feet at 9 seconds. Occasional heavy showers and scattered thunderstorms.

Saturday: South southwest winds 25 to 30 knots. Seas 10 to 12 feet. Wave detail: southwest 11 feet at 8 seconds and west northwest 5 feet at 10 seconds. Occasional heavy showers and scattered thunderstorms.

Saturday Night: South southwest winds 25 to 30 knots. Seas 8 to 11 feet. Wave detail: west southwest 9 feet at 7 seconds and west northwest 5 feet at 10 seconds. Occasional heavy showers with isolated thunderstorms.

Sunday: South southwest winds 20 to 25 knots, becoming southwest 15 to 20 knots. Seas 6 to 9 feet. Wave detail: west southwest 7 feet at 6 seconds and west northwest 5 feet at 10 seconds. Occasional heavy showers.

Monday: Southwest winds 10 to 15 knots, veering to west southwest 7 to 10 knots in the evening, then becoming variable less than 10 knots after midnight. Seas 4 to 6 feet. Wave detail: west northwest 3 feet at 10 seconds. Occasional showers, mainly in the morning.

winds and seas higher in and near tstms.







Zone Forecast: Alenuihaha Channel (PHZ121)

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