Good question! Yes, ENSO is known to have an impact on the West African Monsoon, which means it can impact precipitation in western and central Africa north of the equator during the monsoon season (June - September). La Nina tends to enhance the monsoon, which brings more precipitation, and El Nino does the opposite. During ENSO-neutral conditions, like what we have now, then ENSO is not much of a factor and other factors, like the sea surface temperature anomalies in the tropical Atlantic, will have a much stronger influence.