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What's the Temperature on the Moon?

Full Moon over Saskatoon, Saskatchewan
Astrophotographer Colin Chatfield obtained this full moon photo in Saskatoon, Saskatchewan, Canada, February 7, 2012. (Image credit: Colin Chatfield)

Temperatures on the moon are very hot in the daytime, about 100 degrees C. At night, the lunar surface gets very cold, as cold as minus 173 degrees C.

This wide variation is because Earth’s moon has no atmosphere to hold in heat at night or prevent the surface from getting so hot during the day.

A single "day" on the moon lasts about 28 Earth days, meaning the lunar daytime is nearly two Earth weeks long.

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Space.com Staff

Space.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier. Originally founded in 1999, Space.com is, and always has been, the passion of writers and editors who are space fans and also trained journalists. Our current news team consists of Editor-in-Chief Tariq Malik; Editor Hanneke Weitering, Senior Space Writer Mike Wall; Senior Writer Meghan Bartels; Senior Writer Chelsea Gohd, Senior Writer Tereza Pultarova and Staff Writer Alexander Cox, focusing on e-commerce. Senior Producer Steve Spaleta oversees our space videos, with Diana Whitcroft as our Social Media Editor.