Question

Why will water evaporate more slowly on humid days?

Answer 1

On humid days when the air is already saturated with water evaporates more slowly. I hope this helps

Answer 2

On dry days, sweat evaporates quickly, which means it also carries away heat faster. On humid days, when the air is already saturated with water, sweat evaporates more slowly. This explains why it feels so much hotter in high humidity.