AllMetSat (be sure to check issue dates/times...!):
Africa
NOAA Int'l Sat shots:
AWC - International Satellite Imagery
Similar stuff to AllMetSat, but I like their bigger water vapour shot:
NRL Satellite Page
Basic Sat:
weather.com - Map Room - Satellite Map, Weather Map, Doppler Radar Africa: Satellite
All the above are generally similar, but sometimes one is more up-to-date than the others...
Lastly I'll include a link that's not sat/radar but has loads of wx analyses and forecasts:
Medium Range Forecasts for Africa
Just out of curiosity, to where in West Africa are you heading?