When evaluating the risks associated with unusually extreme events, complex regional differences emerge. Results show the hottest days of the year have warmed by more than 0.5 ☌ over the last 20 years for many populated regions, a rate which exceeds average annual changes across the country. Using high-quality station observations dating back to at least 1972, this study presents the first detailed synthesis of the severity, frequency, and persistence of extreme heat experienced by local communities in New Zealand. While likely also true for New Zealand, significant knowledge gaps exist relating to the current and future risks associated with extreme heat. Extreme heatwaves are among the fastest-changing meteorological hazards in a warming world.
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