High summer temperatures do not usually lead to high fever in children. This is because the body has the ability to regulate itself. When the external temperature exceeds the body temperature, the body can dissipate heat through perspiration and other means. Only when you are in a hot and humid environment for a long time and your body is unable to dissipate heat in time, it may lead to a rise in body temperature and heat stroke. In this case, the child should be removed from this environment. Children with abnormal skin sweat gland development or abnormal thermoregulatory centres can also suffer from hyperthermia if they do not sweat in a hot environment.