Precipitation anomalies in Sierra Leone
Sierra Leone: Precipitation anomalies was 425.21 millimeters in 2025. ◆ Volatile
Precipitation anomalies 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 425.21 millimeters for precipitation anomalies in 2025.
The figure is up 85.2% on the previous year and up 275.3% over ten years.
Over the whole period, precipitation anomalies in Sierra Leone peaked at 749.24 millimeters in 1957 and was at its lowest, -417.7 millimeters, in 1942.
Sierra Leone ranks 7th of 192 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -130.25 millimeters | -417.7 millimeters | 202.67 millimeters | 10 |
| 1950s | 265.08 millimeters | -92.42 millimeters | 749.24 millimeters | 10 |
| 1960s | 134.88 millimeters | -193.22 millimeters | 593.57 millimeters | 10 |
| 1970s | 152.17 millimeters | -101.93 millimeters | 432.62 millimeters | 10 |
| 1980s | 97.62 millimeters | -177.57 millimeters | 665.15 millimeters | 10 |
| 1990s | -49.11 millimeters | -281.56 millimeters | 156.34 millimeters | 10 |
| 2000s | -5.32 millimeters | -257.45 millimeters | 169.8 millimeters | 10 |
| 2010s | 43.24 millimeters | -259.64 millimeters | 479.95 millimeters | 10 |
| 2020s | 168.26 millimeters | 30.69 millimeters | 425.21 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 precipitation anomalies in Sierra Leone?
- Precipitation anomalies in Sierra Leone was 425.21 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 precipitation anomalies recorded in Sierra Leone?
- The highest recorded value was 749.24 millimeters in 1957.
- What is the lowest precipitation anomalies recorded in Sierra Leone?
- The lowest recorded value was -417.7 millimeters in 1942.
- How does Sierra Leone rank for precipitation anomalies?
- Sierra Leone ranks 7th out of 192 countries with data for 2025.
- Is precipitation anomalies rising or falling in Sierra Leone?
- Over the last ten years it is up 275.3%. The long-run trend across the full record is volatile.
- 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 Precipitation anomalies. 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
The difference in a specific year's total precipitation—rain and snow—from the 1991–2020 average, measured in millimeters, excluding fog and dew.