Cameroon's climate is as varied as its geography. High humidity and temperatures with little seasonal variations characterize the coast and southern lowlands. In the north, extremely high temperatures and little or no humidity are normal, although seasonal fluctuations occur.
In Yaounde, humidity and temperatures are lower, but fluctuate daily. Two rainy seasons are interspersed with two relatively dry periods. April and May bring the "mango rains." These moderately heavy rains average 8 inches monthly, then taper off into the drier months of June and July. Rainfall then increases to more than 12 inches monthly for August through November and recedes to as little as 2 inches monthly during the dry season of December through March. During the dry season temperatures may peak above 100°F and dust is a serious problem.