A method for estimating thermal sensation calculates, on the basis of a thermal image, a first temperature, which is a surface temperature of a first area, and a second temperature, which is a surface temperature of a second area, calculates a first amount of heat lost on the basis of the first temperature and first information, calculating a second amount of heat lost on the basis of the second temperature and second information, obtains an area ratio of the first area to the second area, calculates a total amount of heat lost, which is an amount of heat lost from a whole body of a person in a unit area, on the basis of the first amount of heat lost, the second amount of heat lost, and the area ratio, and estimates thermal sensation, which indicates a degree of warmth or coldness of the person, on the basis of the total amount of heat lost.
