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 averaged an annual temperature of 69°F, with hottest temperatures reaching 84°F in August and lowest around 55°F in December. The city received approximately 38 inches of precipitation during the year.
View historical weather for Cornillon · More cities in Ouest