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.

By Tyler AllisonUpdated December 6, 2025

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.