This article is about the modern administrative region of Greece. For the historical region, seeAttica. For the former prefecture, seeAttica Prefecture. For other uses, seeAttica (disambiguation).
With the 2010Kallikratis plan, the region's powers and authority were completely redefined and extended. Since 1 January 2011, the region represents the second-level local administration. While being supervised by theDecentralized Administration of Attica, it is now an independentself-governing body with powers and a budget comparable to the formerprefectures.
The highest July and August temperatures are recorded in the interior of the Athens Basin and also in west areas withNea Filadelfeia,Harokopio University andSalamina registering average summer highs over 35 °C.[12][6][13] Due to land breezes, summer nights can be particularly hot in the south and especially aroundPiraeus which records an average August low of around 27 °C.[6][14] The highest average annual temperatures are recorded inNea Smyrni registering around 20.5 °C, while the lowest is recorded inParnitha mountain with less than 11.0 °C.[6][15][16]Neos Kosmos is the warmest area ofDowntownAthens with an average annual temperature of 20.2 °C and ahot semi-arid climate (Köppen climate classification:BSh) closely bordering ahot-summer mediterranean (Csa) climate. During July 2024 minimum temperatures remained over 30 °C (86 °F) for 12 consecutive days in metropolitanAthens, breaking all known records for any area in the country.[17][18]
Anavysos in theAthens Riviera records the lowest average annual precipitation in mainlandGreece with around 295 mm, while the highest average annual precipitation is found inAvlonas with around 930 mm.[19]Lavrio is the only area in mainland Attica that has never recorded an air frost according to theNational Observatory of Athens station which operates since 2008.[20][6]
The highest temperature ever recorded in Attica was 48.0 °C inElefsina andTatoi on July 10, 1977 which according to theWorld Meteorological Organization was also the highest official temperature ever recorded inEurope until 2021.[21] The lowest temperature ever recorded was −12.0 °C inParnitha mountain on January 9, 2017.[22] The highest minimum temperature in mainland Attica was 32.9 °C (91 °F) and it was recorded on July 26, 2023 inHellinikon.[23] The highest minimum temperature in the Attica region was 37.0 °C (99 °F) inKythira.[24][25]Furthermore, Attica has experienced temperatures of47.5 °C and over in four different locations.
Climate data for Downtown Athens (1991–2020), Extremes (1890–present)
TheGross domestic product (GDP) of the region was 87.4 billion € in 2018, accounting for about 47% of the Greek economic output. GDP per capita adjusted for purchasing power was 28,000 € or 93% of the EU27 average in the same year. The GDP per employee was 99% of the EU average. Attica is the region in Greece with the highest GDP per capita.[34] Despite that, the unemployment rate stood at 21.6% in 2017.[35]
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