How cold is too cold for scuba diving?

There is no single temperature that is “too cold” for scuba diving. It depends entirely on your gear, experience, and personal tolerance. I am perfectly comfortable in a wetsuit down into the mid-60s Fahrenheit, while a female diver friend of mine starts shivering in a wetsuit if the water temperature drops below 80°F. We are all different. The real test is not the number on your dive computer but whether you can stay warm enough to stay focused and safe for the full dive. When you start shivering or losing dexterity, it is time to end the dive.

Thermal protection makes the biggest difference. A properly fitted wetsuit, drysuit, hood, and gloves can extend your comfort into much colder water. Cold increases gas consumption, reduces focus, and makes even simple tasks harder. Staying warm is not about toughness; it is about maintaining control.

If you plan to dive in cooler water, invest in the right exposure protection and learn how to use it before attempting long or deep dives. Comfort and preparation always matter more than temperature limits.

How to Choose, Fit & Use the Right Wetsuit for Diving

Choosing the right wetsuit for scuba diving based on water temperature, fit, thickness, and personal cold tolerance. Includes tips on donning, gear care, and real-world recommendations.

My Scuba Gear for Drysuit Diving

See the complete scuba gear setup I use for drysuit diving in Chicagoland and Lake Michigan. Includes personal choices, training context, and tips for diving in cold water conditions.

Managing Cold, Heat, and Dehydration Post-Dive

Learn how to recognize and respond to post-dive cold, heat stress, and dehydration. Improve diver safety with practical surface recovery strategies and environmental risk management.