Hi, The more humid it is, the more irritable the climate will be. The sweat will not evaporate easily if the relative humidity is high. I have been to two cities in two different countries recently - Madison in USA and Kolkata in India. The humidity in Kolkata is about 65% and that in Madison is about 85%. During noon, the temperature in Madison would be about 35 degree Celsius and that in Kolkata also its about the same. But even with a lower humidity, the sweat that our bodyproduce, doesn't evaporate as easily in Kolkata as that in Madison. Why is that?