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4NM SW Waimanalo Beach HI

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:01 pm HST Sep 17, 2026
Forecast Valid: 12am HST Sep 18, 2026-6pm HST Sep 24, 2026

Overnight

ENE wind around 16 kt. Scattered showers and thunderstorms. Mixed swell...S 4 ft at 18 seconds and E 1 ft at 8 seconds. Waves 3 to 4 ft.

Friday

ENE wind 16 to 19 kt. Scattered showers. Mixed swell...S 4 ft at 17 seconds and ...becoming S 4 ft at 16 seconds . Waves around 4 ft.

Friday Night

ENE wind 18 to 20 kt. Isolated showers after midnight. S swell 4 ft at 16 seconds. Waves around 4 ft.

Saturday

ENE wind 17 to 20 kt. Scattered showers, mainly before noon. S swell 4 ft. Waves around 4 ft.

Saturday Night

ENE wind around 17 kt. Isolated showers. S swell 4 ft. Waves around 4 ft.

Sunday

ENE wind around 17 kt. Isolated showers. S swell 4 ft. Waves around 4 ft.

Sunday Night

ENE wind around 18 kt. Isolated showers. S swell 4 ft. Waves around 4 ft.

Monday

NE wind around 18 kt. Isolated showers. S swell 4 ft. Waves 4 to 6 ft.

Monday Night

ENE wind around 17 kt. Scattered showers. S swell 4 ft. Waves around 6 ft.

Winds and seas higher in and near tstms.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.