Conca is a commune in the Corse-du-Sud department of France on the island of Corsica. It is the southern terminus of the GR 20 walking route.
Conca has a mediterranean climate (Köppen climate classification Csa). The average annual temperature in Conca is 16.9 °C (62.4 °F). The average annual rainfall is 866.3 mm (34.11 in) with November as the wettest month. The temperatures are highest on average in August, at around 26.0 °C (78.8 °F), and lowest in January, at around 9.5 °C (49.1 °F). The highest temperature ever recorded in Conca was 40.6 °C (105.1 °F) on 2 August 2022; the coldest temperature ever recorded was −3.4 °C (25.9 °F) on 27 February 2018.