Surfers, divers, kayakers, and watermen in general have asked the question. We'll try to explain. And it is quite easy to understand the difference between wetsuits and drysuits. It's all in their names.

Water temperature is the main reason you should get a drysuit instead of a wetsuit. A drysuit is made from layers of insulating synthetic materials (neoprene and nylon might be included) that will prevent the user from making contact with the water.

Its waterproof seals and zippers will protect the wearer from very low air and water temperatures, i.e., weather conditions below 50°F (10°C). In a drysuit, your body will never touch water at all.
At this point, cold water surfers are asking why shouldn't they be wearing drysuits? Well, the problem is that a drysuit will certainly restrict and limit movement. And you don't want to feel like a statue on a surfboard.

Drysuits are more often used by boaters, harbor workers, rescue teams, recreational divers and military divers. A wetsuit works rather differently. It lets water in, even if you're wearing a 10-milimeter model.

Wetsuits are usually made of neoprene, a material that provides excellent insulation and flexibility to the wearer. They're not waterproof, but that it is not their goal.

Surfers should only consider getting a drysuit if they feel their daily wetsuit is not enough. Nevertheless, have in mind that drysuits are more expensive, more complicated to don, heavier. Are you comfortable enough?