Well, Hawaii is humid, but not all that hot, actually. Even in summer, the sea temperature keeps it down to the mid-80's for the most part. We went a couple of times in June, which should be the hottest month, and the sun was intense but the breeze was always cool.
We don't get all that hot here, either. I think 96 is the highest temperature I've ever seen here. What limits the bearing on our tomatoes is the warm nights. When the night temperatures stay above 80 all night the tomatoes just can't take it, they either stop blooming or just give up altogether.
