Pretty sure our sun intensity is pretty close to Hawaii, Evan. Clean air, close to the same latitude etc. But Hawaii is cooler in summer, around 85 max. and warmer in winter. Their ocean temp is much lower, in the 70's year 'round there. Here the Gulf gets close to 90deg. water by the end of the summer . . . feels like swimming in soup!
Also some parts of Hawaii get rain dependably every day in the afternoon. Trade wind blows constantly, and the clouds hit the steep hillsides, rise up and drop their rain. Needless to say, it's cloudy in the afternoons for a while each day, too . . . so maybe not 'full sun' in the strict sense.
A lot of the commercial pineapple growing in Hawaii takes place on the downslopes of these rainy areas at least on Oahu, Maui and Kauai where I've seen them. Otherwise they wouldn't be able to afford to water all those plants.
