The north has a single wet season from April/May to September/October. The hottest months here are March to May, when temperatures can soar to 40°C (104°F), although it's a dry (and therefore generally bearable) heat. The south has a humid, equatorial climate, with rain scattered throughout the year and almost continual high humidity.
The main wet season here is June to October, when secondary roads often become impassable. From March to June are the light rains.
Throughout Cameroon, November to February are the driest months, though dust from harmattan winds greatly restricts visibility. These are the best months to visit, although you'll have harmattan haze during much of this time (which is not good for photography). The worst months are between July and October, when it's raining almost everywhere and many roads are impassable.
Compare and find the best price: