Climate Change Chart of Santorini, Greece

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.34 °C in the more recent period; this is an unweighted comparison of monthly means, not a day-weighted annual average, and it does not mean every month warmed by the same amount. The largest monthly increase was in August, with a difference of +2.20 °C. These figures describe monthly mean temperatures rather than daytime maximum temperatures.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of -0.29 mm/day compared with the earlier reference period. This is an unweighted mean of monthly conditions, not a day-weighted annual average or a monthly rainfall total. The largest monthly decrease occurred in January, with a difference of -1.47 mm/day, while March had the largest increase, a difference of +0.29 mm/day. These opposing monthly changes show why the overall mean should not be read as a description of every month.

Changes in sunshine duration

Across calendar months, mean daily sunshine duration had a difference of -0.03 hours/day, an unweighted comparison of monthly means rather than a day-weighted annual figure. The largest monthly decrease was in April, with a difference of -0.38 hours/day; in contrast, the largest increase was in January, with a difference of +0.23 hours/day. The average change summarizes the months collectively, so it does not imply that daily sunshine shifted in the same direction in every month.

Changes in snowfall

Mean daily snowfall, averaged across calendar months, had a difference of +0.01 mm/day in the more recent period. This is an unweighted comparison of monthly means, not a day-weighted annual average or a monthly snowfall total. The largest monthly increase occurred in January, with a difference of +0.13 mm/day; this particular monthly change need not represent the pattern in other months.