Probably the least explored continent as far as surfing goes. Apart from some countries in the north like Morocco and Senegal and South Africa in the south. Not much is known and documented in the other countries.
Lots of countries around the equator on both ides, so you will not need to travel with thick wetsuits, what you do need however is lots of Patience since traveling around takes time here, also recommended are a strong stomach to handle the food, a medical kit for emergencies and you need to have a strong preference for adventure. Don't want the hassle of al that? Go to South Africa, quality spots around Capetown and Durban and off course the magic tubes of Jeffrey's Bay.