This page is a list of the average countrywide precipitation in Sierra Leone for each year from 1895–2021. It is an average over the entire territory of the country, based on data from the University of East Anglia.
All-Time Rainiest Year in Sierra Leone
1906 was the rainiest year in the recorded history of Sierra Leone. The average annual precipitation was 366.4 cm.
All-Time Driest Year in Sierra Leone
1986 had the least rain of any year in the recorded history of Sierra Leone. The average annual precipitation was 231.2 cm.