Weather & Climate in Grytviken, South Georgia and the South Sandwich Islands

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Grytviken has a cool climate with an average annual temperature of 34°F (1°C). Winters average 40°F in January while summers reach 27°F in July / relatively mild seasonal variation. Annual precipitation totals 61.0 inches (wetter than the 38-inch national average). The area receives 37.6 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 13 feet.

Temperature

40°F Jan (4°C) 27°F Jul (-3°C)
Annual Average34.0°F
37% below US avg
January Average40°F (4°C)
July Average27°F (-3°C)

Geography

Elevation13 ft (4 m)
Coordinates54.2811°S, 36.5092°W
TimezoneAtlantic/South_Georgia

Precipitation & Snow

Annual Rainfall 61.0"
60% above US avg
Snowfall 37.6"
Wettest Month (May) 6.06"
Driest Month (Dec) 3.82"

Air Quality

Earthquake History

13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.

Mar 8, 2020 South Georgia Island region M4.9 110 km 10 km
Jul 28, 2002 South Georgia Island region M4.8 96 km 10 km
Feb 25, 2003 South Georgia Island region M4.6 68 km 10 km
Feb 19, 2020 South Georgia Island region M4.6 101 km 10 km
Sep 19, 2022 South Georgia Island region M4.6 107 km 9 km
Mar 2, 2021 South Georgia Island region M4.6 110 km 10 km
Jun 18, 2022 South Georgia Island region M4.5 148 km 10 km
Aug 5, 2022 South Georgia Island region M4.5 115 km 10 km
Mar 30, 2020 South Georgia Island region M4.4 108 km 10 km
Jun 23, 2020 South Georgia Island region M4.3 125 km 10 km
Sep 20, 2015 South Georgia Island region M4.3 131 km 14 km
Apr 28, 2020 South Georgia Island region M4.3 118 km 10 km
Aug 9, 2000 South Georgia Island region M4.3 111 km 33 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 40°F (4°C) 4.2 in
February 41°F (5°C) 5.6 in Warmest
March 39°F (4°C) 5.8 in
April 35°F (2°C) 6.0 in
May 30°F (-1°C) 6.1 in Wettest
June 29°F (-2°C) 5.5 in
July 27°F (-3°C) 5.6 in Coldest
August 29°F (-2°C) 5.7 in
September 31°F (-1°C) 4.8 in
October 34°F (1°C) 3.9 in
November 36°F (2°C) 4.1 in
December 38°F (3°C) 3.8 in Driest

Grytviken has a seasonal temperature swing of 13°F / from 27°F in July to 41°F in February. Total annual precipitation is 61.0 inches, with May being the wettest month (6.1") and December the driest (3.8").

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