Mercury's average surface temperature is around 333 degrees Celsius (631 degrees Fahrenheit). However, this is just an average. Temperatures can vary greatly depending on the time of day and whether it's facing the sun or not.
Here are some important details about Mercury's temperature:
* Daytime: Temperatures on the side facing the Sun can reach up to 430 degrees Celsius (800 degrees Fahrenheit).
* Nighttime: Temperatures on the side facing away from the Sun can plummet to around -180 degrees Celsius (-290 degrees Fahrenheit).
This huge temperature difference is due to Mercury's lack of atmosphere. There is no air to trap heat, so the side facing the Sun gets extremely hot, while the side facing away gets extremely cold.
