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I've never lived or spent significant summer time in Florida or New York City, but your descriptions of summer weather sounded surprising to me. I looked up weather data, and Jacksonville, Miami, and Tampa all get significantly hotter (4-7 degrees Fahrenheit higher average temperatures in the hottest part of summer), muggier, and cloudier in the summer. Only Miami is consistently windier in the summer than NYC. Is th…
IIRC part of South Florida (around Ft. Lauderdale) is the only tropical rainforest climate in the CONUS. I've spent time in the mid-Atlantic region and time in South Florida. Miami in July is the closest thing to hell on Earth. But I'd rather deal with that and live in a beautiful climate year-round than deal with north eastern winters.
Thank goodness the West Coast exists to relieve us of that dreadful dilemma!