Due to the range of the Antarctic Circle, the average weather conditions can vary greatly. However, most expedition cruises that go near the Antarctic Circle stop at Detaille Island. This area can be warmer than many travelers would imagine. For example, in October, the temperature usually ranges from -7 to 0 degrees Celsius (19.4 to 32 degrees Fahrenheit). Of course, the Antarctic Circle can also be extremely frigid, depending on the time of year.