The European body is really not adapted to this humid Korean summer weather. And it's really in the genes. My wife, a biological Korean, she practically never sweats. It can be hot or humid, she can do physical work, etc. nothing. I on the other hand break out in sweat as soon the humidity goes over 60%, you could calibrate a humidity meter by that.

I thought it is because I'm overweight, which probably is a contributing factor, but it's not the main factor.

Our son, who is half Korean and half European got a mix of our genes. So I was thinking he would be somewhere in between with the sweating. But it turns out he got all my sweating genes :D He also sweats immediately when the humidity is a bit higher. He is not overweight but he moves a lot and fast which heats his body up and makes him sweat fast.

Today it is raining and we were walking to the kindergarten. It's very humid and very hot. We took umbrellas with us to not get wet. I thought it was going well until after half the way I felt that I'm dripping water from my face, my hair is totally wet, my T-Shirt too and so on. No there was no leak in the umbrella it was working fine. I was just sweating so much that from the look of it I could have left the umbrella at home and I would have been equally wet when I arrived at the Kindergarten.

The moral of this story is that I need air conditioning, not for the heat, I have no problem with hot, but for the humidity.