The Sahara, being a vast expanse of mostly barren land with little vegetation or cloud cover, loses its heat rapidly once the sun sets. The absence of moisture or insulating barriers allows heat to escape into the clear night sky, leading to a drastic temperature drop.
It's not uncommon for nighttime temperatures in the Sahara to fall to around 0 degrees Celsius (32 degrees Fahrenheit) or even lower. In extreme cases, temperatures have been recorded as low as -18 degrees Celsius (-0.4 degrees Fahrenheit) in some parts of the desert.
Due to the extreme temperature range, travelers exploring the Sahara should be well-prepared for both the daytime heat and the frigid nighttime conditions. Warm clothing, blankets, and appropriate gear are essential for enduring the cold desert nights.