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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.

Average across cities

25.6°C

Annual rainfall

2,544mm

Spread between cities

1.4°C

Warming

+1.4°C

Departure from normal across the country's largest cities, 1940–2025

Rankings

Across the 14 cities in this country with a measured climate.

The warmest

  1. 1Makeni26.1 °C
  2. 2Freetown26 °C
  3. 3Goderich26 °C
  4. 4Mile 9126 °C
  5. 5Waterloo25.9 °C
  6. 6Lunsar25.9 °C
  7. 7Port Loko25.8 °C
  8. 8Njala25.8 °C
  9. 9Bo25.5 °C
  10. 10Segbwema25.5 °C

The coldest

  1. 1Koidu24.7 °C
  2. 2Kenema25.1 °C
  3. 3Kabala25.2 °C
  4. 4Bo25.5 °C
  5. 5Segbwema25.5 °C
  6. 6Bumpe25.5 °C
  7. 7Port Loko25.8 °C
  8. 8Njala25.8 °C
  9. 9Waterloo25.9 °C
  10. 10Lunsar25.9 °C

The wettest

  1. 1Waterloo3,137 mm
  2. 2Freetown3,049 mm
  3. 3Goderich3,049 mm
  4. 4Port Loko2,948 mm
  5. 5Bumpe2,685 mm
  6. 6Lunsar2,610 mm
  7. 7Koidu2,590 mm
  8. 8Bo2,518 mm
  9. 9Makeni2,397 mm
  10. 10Njala2,391 mm

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.

Cities by region

Eastern Province3

Northern Province4

North West1

Southern Province3

Western Area3