How Does a Hose Help Keep us Cool?

If we sprinkle the ground with water, the heat from the ground warms the water. Because it's warm the water evaporates and rises. That makes the temperature of the ground and the air go down. And when the temperature is lowered, we naturally feel cooler. Our perception of heat and cold depends not only upon the temperature of the air but upon the wind and humidity as well. Even at an air temperature of 93 degree Fahrenheit. (34 degree Celsius.), which is close to body temperature, we will not feel so hot if the humidity is low and perspiration can evaporate freely. The evaporation of water sprinkled on the ground sets up convection currents, and the air motion has a cooling effect.