Why you feel warm during humidity?

Answer 1

Humidity is a measure of how saturated the air is with water; 100% humidity means that no more water can be suspended in the air. The human body cools itself by sweating. This involves the evaporation of sweat from the skin, which absorbs energy in the form of heat, drawing it away from the body and cooling it. If there is less water already in the air - i.e. a low humidity - it will be easier for sweat to evaporate; higher humidity means it is harder, and 100% means it is impossible. Thus, a higher humidity means it will feel hotter because your body cannot cool itself down as well as normal.

Answer 2

Human beings relugate their body temperature by sweating. This works because heat is required to evaporate water, so when the sweat on your skin evaporates and turns to water vapour, it carries heat away from your body.

However, air can only hold so much water before it becomes saturated and any further moisture cannot evaporate - instead water will condense out of the air, turning back to liquid as tiny droplets.

This means that when humidity levels are high, less of your sweat can evaporate and carry heat away from your body, and so you feel hotter.

Because hot air can hold more water than cool air, when warm, humid air cools, the water condenses out - this is what forms the clouds of 'steam' you see from a hot shower on a cold day. The clouds which appear in the afternoon on hot days are caused by warm, humid air rising until it cools and some of the moisture it carries condenses out.

Answer 3

Relative Humidity is ratio of the amount of water vapour held by air to capacity of air to hold water. So when Relative humidity is higher, amount of water vapour in air and amount of water vapour carrying capacity are nearly equal. This leads to moist air and less evaporation of sweat. Thus we feel hot.