The temperature inside a sauna is between 160 and 180 degrees F, but sometimes can exceed 200 degrees.
Saunas have a very low interior humidity level, which allows high temperatures to be tolerable.
Saunas are arranged with two levels of seating. Those who desire hotter temperatures can sit on the top level, while those who prefer a lower temperature sit on the bottom level.
Nudity is common in conventional saunas and adults and children often share the sauna at the same time. In public facilities, such as in a hotel or cruise ship, a towel is often required to be worn.
When entering a sauna, it's important to enter quickly and not leave the door open too long. Leaving the door open for even a brief period can significantly reduce the temperature inside the sauna.