Drysuit diving on hot days in cold water is a bitch!
I used to dive dry in a 7mm Teknodiver Super Duty Commercial.
I would sweat my ass off topside then get cold at depth because of all the sweat in the suit. It used to get so damp that I thought the suit leaked like a sieve, but it didn’t, it was all sweat. Not to mention almost passing out several times from overheating.
I finally went back to a quality custom made wetsuit that IMO for the type of diving I was doing, worked better than the drysuit. I was actually warmer for the first couple dives, but got colder on the third dive.
It’s all a trade off I suppose. Diving dry certainly has advantages but then so does diving wet with it’s simplicity.
We do a lot of kayak diving in Northern California, so in this case wetsuit diving seems to make more sense for me now.
Shore diving involving hikes and/or kayak diving in a drysuit really doesn’t work well.