I see the confusion. A sauna is not necessarily humid, traditional Finnish sauna are hot but not high humidity. You’re thinking of a steam sauna which is high humidity but lower temperature.
100f+ degree weather with zero humidity? Sweat evaporates so quickly that with a fan on you or a breeze you can actually feel briefly chilled at times.
I see the confusion. A sauna is not necessarily humid, traditional Finnish sauna are hot but not high humidity. You’re thinking of a steam sauna which is high humidity but lower temperature.
https://en.m.wikipedia.org/wiki/Sauna
Yep.
100f+ degree weather with zero humidity? Sweat evaporates so quickly that with a fan on you or a breeze you can actually feel briefly chilled at times.