The amount of heat transfer depends on the evaporation rate, which in turn depends on the humidity of the air and its temperature, which is why one's sweat accumulates more on hot, humid days: the perspiration cannot evaporate.
The amount of heat transfer depends on the evaporation rate. The evaporation rate in turn depends on the humidity of the air. The evaporation rate in turn depends on the humidity of its temperature. The humidity of the air and its temperature is. One's sweat accumulates more on hot, humid days. The perspiration cannot evaporate.