Arphy (; ) is a commune in the Gard department in southern France.
Arphy has an oceanic climate (Köppen climate classification Cfb) closely bordering on a warm-summer Mediterranean climate (Csb). The average annual temperature in Arphy 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 Arphy was on 28 June 2019; the coldest temperature ever recorded was on 12 February 2012.