During summer, which typically lasts from December to February, the average temperature in Antarctica is around -30 degrees Celsius (-22 degrees Fahrenheit). The coastal regions can experience slightly higher temperatures, sometimes reaching just below freezing point, while the inland areas can remain much colder, with average temperatures below -50 degrees Celsius (-58 degrees Fahrenheit).
Temperatures can vary depending on the specific location and weather conditions. In some coastal areas, such as the Antarctic Peninsula, temperatures can occasionally reach above freezing point, allowing for some melting of snow and ice. However, these warmer periods are usually brief and the temperatures quickly drop again.
Keep in mind that the summer season in Antarctica is very short, and it is followed by a long and extremely cold winter period where the temperatures can drop to as low as -90 degrees Celsius (-130 degrees Fahrenheit) in the interior regions.