Climate averages 1991–2020

Weather in Sierra Leone.

ClimaNote covers 5 cities in Sierra Leone, starting with Freetown, Kenema and Bo. Open a city for charts and a table of all 12 months.

Across these cities the yearly average high ranges from 27.3°C in Freetown to 31.3°C in Makeni, and yearly rainfall from 2,215 mm in Kenema to 2,873 mm in Freetown. The hottest city-month is February in Makeni, with an average high of 35.7°C (tied with March in Makeni), and the coolest is August in Freetown, at 25.9°C. By single month, the most rain falls in August in Freetown, with 751 mm, and the least in February in Freetown, with 6.0 mm.

February is the warmest month in 3 cities and December in 1 (in 1 other city two or more months tie); August is the coolest in every city. August is the wettest month in 4 cities and September in 1; January is the driest in 3 cities and February in 2. Of these cities, all have a month with more than 300 mm of rain; none has a month with an average high below 2.0°C or a month with under 1 mm of rain.