Climate Change Chart of Grytviken, South Georgia and the South Sandwich Islands
Comprehensive Climate Change Chart of Grytviken, South Georgia and the South Sandwich Islands: Monthly Averages and Impact Trends
For Grytviken, South Georgia and the South Sandwich Islands, the climate data compare 1940–1950 with 2013–2023.
Averaged across calendar months, mean daily snowfall had a difference of +15.71 mm/day in the more recent period. This is an unweighted comparison of monthly daily averages, not a snowfall total for a month or a day-weighted annual average.
Overview of climate changes
Changes in snowfall
Averaged across calendar months, mean daily snowfall had a difference of +15.71 mm/day in the more recent period. This is an unweighted comparison of monthly daily averages, not a snowfall total for a month or a day-weighted annual average. The largest monthly increase in mean daily snowfall was in August, with a difference of +20.50 mm/day. This describes the monthly average difference, not the amount of snowfall on any particular day.
Temperature changes
Averaged across calendar months, monthly mean temperature shows a difference of +0.97 °C in the more recent period; this is an unweighted comparison of monthly means, not a measure of daytime highs or a continuous change through time. November had the largest monthly mean temperature increase, with a difference of +1.80 °C compared with the earlier reference period. This identifies the strongest increase among the supplied monthly differences, rather than describing every month.
Changes in rainfall
The mean daily rainfall difference averaged across calendar months was +0.44 mm/day higher in the more recent period. This is an unweighted mean of monthly daily averages, not a monthly rainfall total or a day-weighted annual average. The largest monthly increase in mean daily rainfall occurred in November, with a difference of +1.05 mm/day. By contrast, June recorded the largest monthly decrease, a difference of -0.16 mm/day; these two monthly extremes do not imply that all months moved in the same direction.
Changes in sunshine duration
Mean daily sunshine duration, averaged across calendar months, had a difference of -1.62 hours/day in the more recent period. The figure is an unweighted comparison of monthly mean daily hours, rather than a day-weighted annual average. December had the largest monthly decrease in mean daily sunshine, with a difference of -2.87 hours/day compared with the earlier reference period. This marks the strongest monthly decrease in the supplied data and should not be read as a uniform change across months.
Climate Change Data Overview for Grytviken, South Georgia and the South Sandwich Islands
Explore the comprehensive climate change data for Grytviken, South Georgia and the South Sandwich Islands. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes influenced by climate change, helping you understand the unique weather patterns of this region.
Temperature °C
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 2.38 | 3.30 | 0.92 |
| Feb | 3.06 | 3.97 | 0.90 |
| Mar | 2.43 | 3.14 | 0.71 |
| Apr | 1.03 | 1.69 | 0.65 |
| May | -1.26 | -0.50 | 0.77 |
| Jun | -2.30 | -1.33 | 0.98 |
| Jul | -2.63 | -2.38 | 0.26 |
| Aug | -2.99 | -2.06 | 0.94 |
| Sep | -1.91 | -0.73 | 1.17 |
| Oct | -0.68 | 0.73 | 1.41 |
| Nov | 0.45 | 2.25 | 1.80 |
| Dec | 1.72 | 2.79 | 1.08 |
| ⌀ Month | -0.06 | 0.91 | 0.97 |
Sunshine (h) / day
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 10.41 | 7.99 | -2.42 |
| Feb | 8.63 | 7.12 | -1.51 |
| Mar | 7.11 | 5.43 | -1.69 |
| Apr | 5.51 | 4.17 | -1.34 |
| May | 3.77 | 3.00 | -0.76 |
| Jun | 3.01 | 1.93 | -1.08 |
| Jul | 2.98 | 2.48 | -0.50 |
| Aug | 4.72 | 3.49 | -1.23 |
| Sep | 6.68 | 5.43 | -1.25 |
| Oct | 8.64 | 6.42 | -2.22 |
| Nov | 10.62 | 8.02 | -2.60 |
| Dec | 11.29 | 8.42 | -2.87 |
| ⌀ Month | 6.95 | 5.32 | -1.62 |
Rain (mm) / day
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 1.90 | 2.17 | 0.27 |
| Feb | 2.66 | 3.51 | 0.85 |
| Mar | 2.51 | 3.21 | 0.70 |
| Apr | 1.54 | 2.10 | 0.56 |
| May | 0.78 | 1.33 | 0.55 |
| Jun | 0.66 | 0.50 | -0.16 |
| Jul | 0.33 | 0.44 | 0.11 |
| Aug | 0.14 | 0.45 | 0.31 |
| Sep | 0.45 | 0.56 | 0.11 |
| Oct | 0.53 | 1.22 | 0.69 |
| Nov | 0.54 | 1.59 | 1.05 |
| Dec | 1.15 | 1.45 | 0.29 |
| ⌀ Month | 1.10 | 1.54 | 0.44 |
Snow (mm) / day
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 14.86 | 34.10 | 19.23 |
| Feb | 12.80 | 31.04 | 18.24 |
| Mar | 16.33 | 32.19 | 15.85 |
| Apr | 22.71 | 39.83 | 17.12 |
| May | 29.77 | 38.15 | 8.38 |
| Jun | 28.18 | 44.31 | 16.13 |
| Jul | 31.80 | 46.84 | 15.04 |
| Aug | 27.20 | 47.70 | 20.50 |
| Sep | 26.38 | 44.74 | 18.36 |
| Oct | 24.47 | 37.94 | 13.48 |
| Nov | 23.76 | 33.64 | 9.87 |
| Dec | 15.87 | 32.17 | 16.31 |
| ⌀ Month | 22.84 | 38.55 | 15.71 |
