‘It’s not the heat, it’s the humidity’

Question

Why does the amount of humidity in the air affect comfort moreso than the temperature?

In: 43

Answer 1

If your sweat evaporates quickly and fully your temperature gets reduced by that a lot, maybe as much as 20 degrees Celsius in most extreme examples. So you can just drink more water to replenish it, but not going to overheat.

But if it’s high humidity sweating doesn’t cool you nearly as well – if humidity is at 100% sweat just doesn’t evaporate and doesn’t provide any cooling, only makes you wet.