The winter of 2025–2026 was the third rainiest season ever recorded in the greater Athens area, according to the climate archive of the National Observatory of Athens.
According to the ClimateHub team, the top two seasons for rainfall are the winters of 2012–2013 and 2002–2003. At the same time, 2025-2026 was the second warmest winter ever recorded in Athens since the late 19th century.
Specifically, based on data from the Observatory’s historic weather station—permanently installed on the Hill of the Nymphs in the Thissio district since 1890—the main climate characteristics of winter 2025–2026 are as follows:
The average winter temperature was 12.63°C, which is +2.34°C above the average of the most recent climate period (1991–2020). Similar deviations were recorded in both the average maximum (Tmax) and average minimum (Tmin) temperatures, at 16.4°C and 10.0°C, respectively.
Floods in the town of Mandra, northwest of Athens, after heavy rainfall, on June 27, 2018
The winter of 2025–2026 ranks as the second warmest winter on record in Athens, with the warmest being the winter of 2023–2024, which had an average temperature of 13°C.
In addition to high temperatures, the same season was also one of the wettest ever recorded. Total rainfall reached 336.8 mm, nearly double the average for the 1991–2020 period. It ranks as the third rainiest winter on record, behind the of winter 2012–2013 (400 mm) and the winter of 2002–2003 (386 mm).
