Just curious, when is generally he best time to dive the Great Lakes? Basically want the temps to be comfortable so that you don't freeze on the surface after a cold water dive, but not so hot that you risk heat stroke while getting geared up, either. When is the weather the calmest, the waters the warmest (I realize that's said in context) & the waters the clearest? I'm thinking of diving the great lakes sometime in the future. I do have a drysuit & am accustomed to diving in 40 degree water. I am also Adv. Nitrox/ Deco procedures trained & also Full Cave (though, yes I realize there aren't any, if many ave in the Great Lakes). I do have some limited wreck penetration training.