RusioRusio is a commune in the Haute-Corse department of France on the island of Corsica.WWW Official SiteGeographyClimateRusio has a hot-summer Mediterranean climate. The average annual temperature in Rusio is. The average annual rainfall is with November 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 Rusio was on 4 August 2017; the coldest temperature ever recorded was on 27 February 2018.