Confidence votes 31.9K. The mean temperature of the Sahara Desert is over 30 ÂºC (86 ÂºF). The average summer temperature is 30 ÂºC (86 ÂºF); winter temperature 13 ÂºC (55 ÂºF), considered low for a desert but a fact, apparently. Some months have average temperatures of 40 ÂºC (104 ÂºF), often reaching the 50 ÂºC (122 ÂºF).