Climate Louargat has an
oceanic climate (
Köppen climate classification Cfb). The average annual temperature in Louargat is . The average annual rainfall is with December as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . The highest temperature ever recorded in Louargat was on 9 August 2003; the coldest temperature ever recorded was on 2 January 1997. {{Weather box ==Population==