Where I live (pretty close to the sea) it's somewhat slightly humid, but where I mine it's pretty dry in the summer, average humidity is below 15%, so I don't have to worry much about humidity, my only real problem is when there is a counter hot wind coming from the south, it pushes against the exhaust fans and slows down the movement of hot air, the good thing is that these kinds of winds don't come too often and don't last for too long when they come.