Climate Cotignac has a
hot-summer Mediterranean climate (
Köppen climate classification Csa). The average annual temperature in Cotignac is . The average annual rainfall is with October as the wettest month. The temperatures are highest on average in July, at around , and lowest in January, at around . The highest temperature ever recorded in Cotignac was on 7 July 1982; the coldest temperature ever recorded was on 23 January 1963. {{Weather box|width=auto ==Population==