We just did our first open water dive today in a local lake. Water temp was 51 degrees. Like I said, we wore 6.5 mm farmer johns. I was actually ok, not hot or cold. But, it was certs, so there was a lot of standing around or just hanging out, not a lot of movement. The main thing was my hands, because we had garbage gloves with holes in a few of the fingers.
Tomorrow we go out into Puget Sound, and looking at the temp on the internet, the water is 53.5 degrees.
Anybody have experience diving in these temps? If so, what do you use?