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Scuba Diving Wetsuits

Because of the varying depths and water temperatures encountered, scuba diving involves several different kinds of wetsuits. Drysuits and semi-dry suits are used in conditions of extreme to moderate cold, i.e. water temperatures ranging from about 30 to 60 degrees F. Standard neoprene scuba diving wetsuits are used in water temperatures from 50 to 80 degrees F. Here are some further tips on the appropriate thickness and styles of scuba diving wetsuits.

Wetsuits vs. drysuits
Scuba wetsuits keep divers warm by trapping a very thin layer of water between a diver's skin and the suit. This water is heated by the body, and the gas cells contained in the neoprene reduce thermal conductivity, thus further insulating the body. In colder water temperatures, a scuba diving drysuit is required. A drysuit is sealed to keep water out and air in.

Scuba diving wetsuit temperature and thickness
Deep diving and cold water temperatures require thicker scuba diving wetsuits. For easy reference, here's a short recommendations chart for scuba wetsuits:

 

• Cold as 75 F: 1/16-inch or 1.6mm wetsuit
• Cold as 70 F: 1/8-inch or 3mm wetsuit
• Cold as 65 F: 3/16-inch or 5mm wetsuit
• Cold as 50 F: 1/4-inch or 6.5mm wetsuit
• Cold as 35 F: 3/8-inch or 9.5mm wetsuit

 

Scuba diving wetsuit styles
In addition to thickness, scuba wetsuit styles will vary depending on the temperature. A scuba diving "shortie" or three-quarter wetsuit is sufficient for warmer temperatures. Full suits are essential for colder temperatures. Most scuba diving wetsuits are one piece. For scuba divers with different physical proportions, the so-called Farmer John wetsuit might provide a better fit. It's a two-piece scuba diving wetsuit that allows a more specific or idiosyncratic fit for your upper and lower body.

Lastly, when scuba diving in water temperatures below 50 degrees F, wetsuit accessories such as hoods, boots, and gloves are critical.