A wake-up system comprising: an illumination apparatus which is configured to irradiate wake-up light, a control apparatus which is configured to control output of the wake-up light irradiated from the illumination apparatus, an interface apparatus which is configured to be operated by a user to input at least a wake-up time, wherein the illumination apparatus comprises an output variation apparatus which is configured to vary output of the wake-up light to be irradiated, and a color temperature variation apparatus (24R, 24G and 24B) which is configured to vary color temperature of the wake-up light, the control apparatus comprises a light output control unit which is configured to control the output variation apparatus so as to increase the output of the wake-up light irradiated from the illumination apparatus from an wake-up operation start time to the wake-up time, and a color temperature control unit which is configured to control the color temperature variation apparatus (24R, 24G and 24B) such that color temperature of the wake-up light in a time period from a first time, which is a time passing a first predetermined time period from the wake-up operation start time, to the wake-up time becomes higher than color temperature of the wake-up light in a time period from a second time, which is a time before a second predetermined time period shorter than the first predetermined time period from the first time, to the first time, characterized in that the color temperature control unit is configured to set the color temperature of the wake-up light at the wake-up operation start time higher than the color temperature of the wake-up light at the first time, to gradually decrease the color temperature of the wake-up light as time goes on so that the color temperature of the wake-up light at a third time between the second time and the first time is to be a minimum value lower than the color temperature of the wake-up light at the first time, and to gradually increase the color temperature of the wake-up light as time goes on from the third time toward the first time. an illumination apparatus which is configured to irradiate wake-up light, a control apparatus which is configured to control output of the wake-up light irradiated from the illumination apparatus, an interface apparatus which is configured to be operated by a user to input at least a wake-up time, wherein the illumination apparatus comprises an output variation apparatus which is configured to vary output of the wake-up light to be irradiated, and a color temperature variation apparatus (24R, 24G and 24B) which is configured to vary color temperature of the wake-up light, the control apparatus comprises a light output control unit which is configured to control the output variation apparatus so as to increase the output of the wake-up light irradiated from the illumination apparatus from an wake-up operation start time to the wake-up time, and a color temperature control unit which is configured to control the color temperature variation apparatus (24R, 24G and 24B) such that color temperature of the wake-up light in a time period from a first time, which is a time passing a first predetermined time period from the wake-up operation start time, to the wake-up time becomes higher than color temperature of the wake-up light in a time period from a second time, which is a time before a second predetermined time period shorter than the first predetermined time period from the first time, to the first time, characterized in that the color temperature control unit is configured to set the color temperature of the wake-up light at the wake-up operation start time higher than the color temperature of the wake-up light at the first time, to gradually decrease the color temperature of the wake-up light as time goes on so that the color temperature of the wake-up light at a third time between the second time and the first time is to be a minimum value lower than the color temperature of the wake-up light at the first time, and to gradually increase the color temperature of the wake-up light as time goes on from the third time toward the first time.