Annual precipitation in Sierra Leone
Sierra Leone: Annual precipitation was 2,951 millimeters in 2025. ▬ Flat
Annual precipitation in Sierra Leone, 1940–2025
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in millimeters.
Analysis
Sierra Leone recorded 2,951 millimeters for annual precipitation in 2025.
The figure is up 7.1% on the previous year and up 29.2% over ten years.
Over the whole period, annual precipitation in Sierra Leone peaked at 3,276 millimeters in 1957 and was at its lowest, 2,109 millimeters, in 1942.
That places Sierra Leone 13th out of 192 countries with data for 2025, putting it in the top 10%.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | 2,396 millimeters | 2,109 millimeters | 2,729 millimeters | 10 |
| 1950s | 2,791 millimeters | 2,434 millimeters | 3,276 millimeters | 10 |
| 1960s | 2,661 millimeters | 2,333 millimeters | 3,120 millimeters | 10 |
| 1970s | 2,678 millimeters | 2,424 millimeters | 2,959 millimeters | 10 |
| 1980s | 2,624 millimeters | 2,349 millimeters | 3,191 millimeters | 10 |
| 1990s | 2,477 millimeters | 2,245 millimeters | 2,683 millimeters | 10 |
| 2000s | 2,521 millimeters | 2,269 millimeters | 2,696 millimeters | 10 |
| 2010s | 2,570 millimeters | 2,267 millimeters | 3,006 millimeters | 10 |
| 2020s | 2,695 millimeters | 2,557 millimeters | 2,951 millimeters | 6 |
Countries ranked near Sierra Leone
More reference data data for Sierra Leone
- Spring temperature anomalies 0.1247 °C (2026)
- Summer temperature anomalies 0.8874 °C (2026)
- Temperature anomalies by month 0.2824 °C (2026)
- Universal right to vote in practice 2 (2025)
- Autumn temperature anomalies 0.1314 °C (2025)
- Winter temperature anomalies 0.1178 °C (2025)
- Consumer price index 771.75 2010 = 100 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 0 (2025)
- Men's universal right to vote 1 (2025)
Frequently asked questions
- What is annual precipitation in Sierra Leone?
- Annual precipitation in Sierra Leone was 2,951 millimeters in 2025, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest annual precipitation recorded in Sierra Leone?
- The highest recorded value was 3,276 millimeters in 1957.
- What is the lowest annual precipitation recorded in Sierra Leone?
- The lowest recorded value was 2,109 millimeters in 1942.
- How does Sierra Leone rank for annual precipitation?
- Sierra Leone ranks 13th out of 192 countries with data for 2025.
- Is annual precipitation rising or falling in Sierra Leone?
- Over the last ten years it is up 29.2%. The long-run trend across the full record is flat.
- Where does this Sierra Leone data come from?
- The figures come from Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data, published as part of Annual precipitation. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 86 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Total annual precipitation—rain and snow—calculated as the sum of daily averages, reported as the depth of water falling to Earth's surface, excluding fog and dew.