How does humidity affect temperature perception?

Humidity significantly influences how temperature is perceived by the human body, particularly in terms of comfort and thermal sensation. When humidity levels are high, the amount of moisture in the air impairs the body's ability to cool itself through the evaporation of sweat. This leads to a situation where even moderate temperatures can feel much warmer than they actually are, as the body's natural cooling mechanisms are less effective.

In environments with high humidity, the moisture in the air means that sweat does not evaporate as efficiently, which results in an accumulation of heat and an uncomfortable sensation. This is why people often report feeling hotter on humid days, even when the actual temperature remains unchanged. Understanding this interaction between humidity and temperature can help in making appropriate preparations for varying weather conditions, especially in terms of hydration and clothing choices.