The Waianae plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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6.04 inches of rain fell in two days, the most for this week of the year since records began in 1949. The next wettest, 5.61 inches, fell in 1965.
Waianae’s center stands about 16 ft above sea level. Within three miles the land runs from 0 ft to 2,600 ft, a difference of 2,600 ft: mountain country. Open water lies within three miles. The highest named summit within 15 miles is Kaʻala, about 3,990 ft, 5 miles north-northeast.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 6×.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR.
Waianae has a hot semi-arid climate. Summer afternoons average 89° in August; winter nights fall to about 65° in January. About 14 inches of rain fall in a normal year.
On November 14 Waianae normally reaches 84° and falls to 70°. The record high is 92°, in 1991; the record low 64°, in 2011. The most rain on this date, 2.61 in, fell in 1996.
Normals 1991–2020 and records since 1949 at Ewa Kalaeloa Airport, 13 miles southeast. NOAA, through RCC-ACIS.
