I was actually planning to feature a more fall appropriate outfit today but we were in the high 80s all weekend and I just couldn't bear the thought of adding more layers on a hot sunny day.
As you will know, heat passes from a hotter to a cooler body; and on the average, the surface layers of the oceans are cooler than the air above them (as anyone who has tried swimming in the North Sea on a sunnyday in August will testify).