According to data from 53 meteorological stations at the National Observatory of Athens/meteo.gr, the maximum daily temperature in Grecce in September 2022 was nearly equal to the average for the years 2010–2019, but the final ten days of the month were among the coldest in the previous 12 years for September.
The average maximum temperature varied by -0.9 degrees Celsius in Northern Greece, -0.3 degrees Celsius in Western Greece, +0.3 degrees Celsius in Thessaly, -0.1 degrees Celsius in Central Greece and the Peloponnese, and -0.2 degrees Celsius and 0 degrees Celsius in the Aegean islands and Crete, respectively.
This September was the third coldest in Northern Greece since 2010, behind 2014 and 2016, when significantly colder temperatures were recorded.
Despite an unusually cold end-of-month period, the average maximum temperature in September this year was somewhat higher than in September 2021 for Central Greece, Thessaly, the Aegean Islands, and Crete.
The highest temperature deviations were observed in Alexandroupoli, where temperatures ranged up to 8.4°C below normal for the season between September 19 and 27, 2022, with negative deviations recorded on 24 of the month’s 30 days. Similar negative deviations (-1.1°C) were recorded in Athens and Thessaloniki, with 17 days in Athens and 18 days in Thessaloniki having negative deviations.