March weather forecast
South Georgia and the South Sandwich Islands

March ushers in the beginning of the autumn season in South Georgia and the South Sandwich Islands, marking the start of a transition towards the harsher weather conditions characteristic of this remote region. The temperatures in March start to drop, with averages ranging from 1°C (33.8°F) to 5°C (41°F). This represents a clear departure from the milder conditions of the Antarctic summer experienced in the previous months.

In Grytviken, the trend of marginally warmer conditions persists due to the settlement's coastal location. Nevertheless, the gradual temperature decline is also evident here, mirroring the overall trend on the islands.

Wind speeds in March start to escalate compared to the summer months. Average wind speeds can reach around 15km/h (9.3mph) and may surge higher during storm events. As March progresses, these events become increasingly frequent, signaling the transition towards the windier autumn and winter months.

Precipitation levels rise in March compared to the summer months. Rain remains more prevalent than snow due to the temperatures still being above freezing, especially in coastal areas. However, the likelihood of snow increases as temperatures continue to drop, particularly in the mountainous regions.

Wildlife activity starts to decrease in March, as many bird and marine species begin their migration away from the islands to avoid the approaching colder months.

Compared to February, the weather in March is cooler, windier, and wetter. This trend intensifies moving into April, as the autumn season takes hold, bringing lower temperatures, stronger winds, and an increase in both rain and snow.

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• South Georgia Island - March »
  A minimal variation is noted in South Georgia Island's average high-temperature at the onset of March, reaching a still icy 4.4°C (39.9°F) from February's 5.6°C (42.1°F). Night temperatures during March in South Georgia Island experience a slight downturn, averaging a still icy 0.6°C (33.1°F).
• Grytviken - March »
  In March, the average sea temperature in Grytviken is 3°C (37.4°F). In March, the average sunshine duration in Grytviken is 4.4h.
• Stromness - March »
  The month with the least snowfall in Stromness is March, when snow falls for 12.7 days and typically aggregates up to 125mm (4.92") of snow. In Stromness, South Georgia and the South Sandwich Islands, in March, during 20.5 rainfall days, 109mm (4.29") of precipitation is typically accumulated.