December weather forecast
South Georgia and the South Sandwich Islands

December in South Georgia and the South Sandwich Islands marks the arrival of the Antarctic summer, the warmest season of the year. Average temperatures during this month can fluctuate from 5°C (41°F) to 11°C (51.8°F), presenting the highest values the islands experience throughout the year.

Grytviken, like the rest of the islands, experiences milder conditions during December. Temperatures in this settlement are slightly warmer due to the ocean's moderating influence, which also results in a reduced likelihood of frost compared to higher altitude regions.

Wind speeds in December are generally lower, with averages around 15km/h (9.3mph), making it one of the calmest months in terms of wind. The frequency of severe storm events is significantly diminished compared to the colder months, contributing to a generally more pleasant and predictable weather pattern.

Rainfall is the primary form of precipitation in December, particularly in coastal areas such as Grytviken. However, in the higher altitude areas of the islands, snowfall can still occasionally occur if temperatures drop below freezing, though this is less common than in the winter and spring months.

The arrival of summer and its milder weather conditions in December coincide with a peak in wildlife activity on the islands. A variety of bird species, including the large colonies of penguins and albatrosses, as well as seals, are at their most active during this period, either breeding or raising their young.

Compared to November, December is warmer and calmer, with the majority of precipitation falling as rain. Looking forward into January, these summer conditions continue, with temperatures remaining relatively high, wind speeds staying low, and rain continuing to be the most common form of precipitation.

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• South Georgia Island - December »
  On the first day of December in South Georgia Island sunrise is at 03:51 and sunset at 20:39. December is the month with the least rainfall with 77mm (3.03") of accumulated precipitation.
• Grytviken - December »
  In Grytviken in December, during 16.5 snowfall days, 184mm (7.24") of snow is typically accumulated. With an average of 17h and 6min of daylight, December has the longest days of the year in Grytviken, South Georgia and the South Sandwich Islands.
• Stromness - December »
  In Stromness in December, snow falls for 16.5 days, with typically accumulated 184mm (7.24") of snow. In Stromness, South Georgia and the South Sandwich Islands, in December, snow falls for 16.5 days, with typically accumulated 184mm (7.24") of snow.