Cornillon, in Ouest, Haiti, is home to roughly 7,600 people in the America/Port-au-Prince time zone at 18.7°N latitude.
In 2025, Cornillon recorded an average annual temperature of 69°F. The hottest temperatures reached 84°F in August; the coolest were 55°F in December. Total precipitation for the year was 38 inches, with the wettest month being September.
View current conditions and forecast for Cornillon · More cities in Ouest