We have friends down here, native Zonies, who think we're crazy for swimming when we come down here in the winter..."you just don't swim in the winter". Again, to my way of thinking, you decide whether or not to go swimming by how hot it is outside. Of course, it helps if you have a heated pool!
We'll continue to swim in the afternoon and again in the evening as long as we're here. We may be the only people in Arizona in November having fun!!!