Feeling Hot, Hot, Hot
On O‘ahu, 2019 was THE hottest year in recorded history according to the National Oceanic and Atmospheric Administration. City and County of Honolulu reported record breaking heat 135 times and the record for daily high temperature was tied 138 times, according to Honolulu Magazine.
Aug. 31, 2019 was the hottest day of the year. The heat map of the island recorded 77,456 measurements of temperature at various times of the day. The stifling temperatures continued through September with record-tying or record-breaking temperatures reported on all but four days that month.
In addition to the thermometer reading, NOAA uses the heat index which is similar to the wind chill factor, to describe the temperature as it feels like outside. The index accounts for factors such as shaded areas or whether the ground is mostly vegetation or asphalt. Urban sprawl with it’s ever increasing acreage of asphalt and concrete can dramatically affect morning to afternoon temperatures with fluctuations as much as 27.7 degrees, about 3 times hotter than areas with more trees and vegetation.
On the record-setting hottest day, the hottest place on Oahu topped off at 107.3 degrees in Pearl City. Temperatures of above 105 degrees were recorded at Ala Moana, Kāhala, Hawai‘i Kai, Mā‘ili, Nānākuli, Pearlridge and Waimānalo.
The South and West Shorelines in general witnessed temperatures rise above 97.5 degrees stretching from Hawai‘i Kai through Waipahu, continuing from ‘Ewa Beach to Mākaha.
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