Antarctica is the coldest, windiest and driest continent on Earth. The average annual temperature ranges from about −10°C on the Antarctic coast to −60°C at the highest parts of the interior.Near the coast the temperature can exceed +10°C at times in summer and fall to below −40°C in winter.ntarctica is the coldest, windiest and driest continent on Earth. The average annual temperature ranges from about −10°C on the Antarctic coast to −60°C at the highest parts of the interior.