South Pole
In midsummer, as the sun reaches its maximum elevation of about 23.5 degrees, high temperatures at the South Pole in January average at . As the six-month "day" wears on and the sun gets lower, temperatures drop as well: they reach around sunset (late March) and sunrise (late September). In midwinter, the average temperature remains steady at around . The highest temperature ever recorded at the Amundsen–Scott South Pole Station was on Christmas Day, 2011, and the lowest was on June 23, 1982 (for comparison, the lowest temperature directly recorded anywhere on earth was at Vostok Station on July 21, 1983, though was measured indirectly by satellite in East Antarctica between Dome A and Dome F in August 2010). Mean annual temperature at the South Pole is -49.3 °C (-56.7 °F).
Climate of Antarctica
The lowest recorded temperature of any location on Earth's surface at was revised with new data in 2018 in nearly 100 locations, ranging from to . This unnamed part of the Antarctic plateau, between Dome A and Dome F, was measured on August 10, 2010, and the temperature was deduced from radiance measured by the Landsat 8 and other satellites, and discovered during a National Snow and Ice Data Center review of stored data in December, 2013 but revice by researcher on June 25 2018. This temperature is not directly comparable to the –89.2 °C reading quoted above, since it is a skin temperature deduced from satellite-measured upwelling radiance, rather than a thermometer-measured temperature of the air above the ground surface.