The climate in the South Sandwich Islands is polar, and it is much colder than nearby South Georgia. This is due to the placement of the South Sandwich Islands, which make them exposed to the Antarctic continent’s cold outbreaks. A trip to the South Sandwich Islands via a cruise is also impossible from May through December due to sea ice.

The average winter temperature in the South Sandwich Islands dips as low as -6 degrees Celsius (21.2 degrees Fahrenheit), but there have been recorded instances of South Thule getting as low as -29.8 degrees Celsius (-21.6 degrees Fahrenheit). During the summer, expedition cruises to the South Sandwich Islands can expect an average high temperature of around 8 degrees Celsius (46.4 degrees Fahrenheit) but somewhat lower temperatures should be expected in the later summer season. 3.