The climate in South Georgia is polar. It is possible that you will experience a variety of different weather types while on a South Georgia cruise. The average temperatures vary widely depending on your exact location. For example, it is usually 0.7 to 5.5°C (33.3 to 41.9°F) on Bird Island during January, but King Edward Point experiences January temperatures ranging from 1.4 to 8.4°C (34.5 to 47.1°F).

In August, the temperature in South Georgia can vary from -4.8 to 1.5°C (23.4 to 34.7°F). Summer winds can produce a warmer than average day, but snow can still fall during this time period above 300 meters (984 feet).