Liberia is so situated in the Tropics as to be directly in the path of the seasonal winds. From May through November, the prevailing monsoon winds drop most of the nearly 200 inches of rain received annually in the capital city of Monrovia. From December through April, the red, dust-laden harmattan winds originating over the Sahara Desert prevail. The transition periods between the seasons are punctuated by violent thunderstorms and sudden torrential downpours.
Temperatures average 81°F; humidity averages 82%. There is little variation over the course of the year. Precautions must be taken against mildew and rust caused by the heat, constant humidity, and the corrosive salt air of the coast.