HaravilliersHaravilliers is a commune in the Val-d'Oise department in Île-de-France in northern France.WWW Official SiteGeographyClimateHaravilliers has an oceanic climate. The average annual temperature in Haravilliers 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 Haravilliers was on 12 August 2003; the coldest temperature ever recorded was on 7 February 1991.