ATHENS -- In the period between June and August 2021, Greece experienced the highest number of warm hours of the last 43 years, according to an analysis by the National Observatory of Athens weather service meteo. Next in line for the highest number of warm hours were the years 2007, 1987, 2000 and 2012, which coincided with the most extreme heatwaves during the summer.
Based on figures released on Sunday, meteo said that the summer of 2021 was exceptionally warm in Greece, with the average temperatures exceeding normal levels by as much as 2C in many parts of the country.
Analysing the five most significant incidents of summer heatwave, the longest (188 hours) was in the period from July 27 until August 6 in 2021, followed by those in June 2007, July 1987, July 2007 and June 2021. The most intense were those of July 27-August 6, 2021 and June 2007, with an average temperature of 24.4 C, followed by those of 1987, July 2007 and June 2021.
Above-average temperatures prevailed in the greater part of the northern hemisphere, with the largest divergence from normal temperatures observed in the western United States, Mediterranean, Siberia and western parts of Russia.