In Liberia the climate is tropical, hot and humid. Most of Liberia has one rainfall season between May and November. This rainfall season is largely controlled by the movement of the tropical rain belt which moves between the northern and southern tropics of Africa over the course of a year.
The month with the most rain in Liberia is September, with an average rainfall of 7.1 inches. The rainless period of the year lasts for 4.0 months, from December 14 to April 12. The month with the least rain in Liberia is February, with an average rainfall of 0.1 inches.