The climate of Sierra Leone, city by city
This page lists the 14 cities in Sierra Leone for which climate normals are available. Each entry covers temperature, rainfall and how the climate changed between 1940 and 2025, computed from ERA5 reanalysis data.
+1.4 °C since 1940
Frequently asked questions
What is the hottest city in Sierra Leone?
The hottest city in Sierra Leone is Makeni, with an average annual temperature of 26.1 °C.
What is the coldest city in Sierra Leone?
The coldest city in Sierra Leone is Koidu, with an average annual temperature of 24.7 °C.
What is the wettest city in Sierra Leone?
The wettest city in Sierra Leone is Waterloo, with 3,137 mm of precipitation per year.
Has the climate of Sierra Leone warmed?
Based on its largest cities, Sierra Leone warmed by +1.4 °C between 1940 and 2025.