BuhyBuhy is a commune in the Val-d'Oise department in Île-de-France in northern France.WWW buhy.frGeographyClimateBuhy has an oceanic climate. The average annual temperature in Buhy 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 Buhy was on 11 August 2003; the coldest temperature ever recorded was on 12 January 1987.