Temperature anomalies by month in Sierra Leone
Sierra Leone: Temperature anomalies by month was 0.2824 °C in 2026. ◆ Volatile
Latest (2026)
0.2824 °C
Change on year
down 79.6%
World rank
100th
of 193 countries
All-time high
1.39 °C
in 2025
All-time low
-1.8 °C
in 1965
Years of data
87
1940–2026
Temperature anomalies by month in Sierra Leone, 1940–2026
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in °C.
Analysis
The most recent figure for temperature anomalies by month in Sierra Leone is 0.2824 °C, measured in 2026.
The figure is down 79.6% on the previous year and up 376.8% over ten years.
Over the whole period, temperature anomalies by month in Sierra Leone peaked at 1.39 °C in 2025 and was at its lowest, -1.8 °C, in 1965.
That places Sierra Leone 100th out of 193 countries with data for 2026, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Temperature anomalies by month in Sierra Leone, year by year
| Year | °C | Change |
|---|---|---|
| 1940 | -1.46 °C | — |
| 1941 | -0.8164 °C | -44.0% |
| 1942 | -0.6332 °C | -22.4% |
| 1943 | -1.1 °C | +73.0% |
| 1944 | -1.21 °C | +10.1% |
| 1945 | -0.5862 °C | -51.4% |
| 1946 | -1.04 °C | +77.1% |
| 1947 | 0.1263 °C | -112.2% |
| 1948 | -0.2187 °C | -273.2% |
| 1949 | -0.0264 °C | -87.9% |
| 1950 | -0.3416 °C | +1195.9% |
| 1951 | -0.6848 °C | +100.5% |
| 1952 | 0.1045 °C | -115.3% |
| 1953 | 0.2065 °C | +97.5% |
| 1954 | -0.5526 °C | -367.7% |
| 1955 | -0.1601 °C | -71.0% |
| 1956 | -0.5891 °C | +267.8% |
| 1957 | -1.73 °C | +193.3% |
| 1958 | -0.366 °C | -78.8% |
| 1959 | -0.1705 °C | -53.4% |
| 1960 | 0.1305 °C | -176.6% |
| 1961 | -0.2383 °C | -282.6% |
| 1962 | 0.0306 °C | -112.8% |
| 1963 | -0.2493 °C | -915.6% |
| 1964 | 0.8826 °C | -454.0% |
| 1965 | -1.8 °C | -303.9% |
| 1966 | 0.1222 °C | -106.8% |
| 1967 | -0.3524 °C | -388.3% |
| 1968 | -0.655 °C | +85.9% |
| 1969 | -0.2948 °C | -55.0% |
| 1970 | 0.0865 °C | -129.3% |
| 1971 | -0.4477 °C | -617.6% |
| 1972 | -0.8306 °C | +85.5% |
| 1973 | 0.4654 °C | -156.0% |
| 1974 | -0.6188 °C | -233.0% |
| 1975 | -0.4627 °C | -25.2% |
| 1976 | -0.8245 °C | +78.2% |
| 1977 | -0.5679 °C | -31.1% |
| 1978 | -0.0798 °C | -85.9% |
| 1979 | -0.3079 °C | +285.7% |
| 1980 | 0.2167 °C | -170.4% |
| 1981 | -0.6726 °C | -410.3% |
| 1982 | -0.1658 °C | -75.4% |
| 1983 | -0.6939 °C | +318.6% |
| 1984 | -0.4211 °C | -39.3% |
| 1985 | 0.0056 °C | -101.3% |
| 1986 | -0.5706 °C | -10240.4% |
| 1987 | 0.56 °C | -198.1% |
| 1988 | 0.267 °C | -52.3% |
| 1989 | -0.3601 °C | -234.9% |
| 1990 | -0.5278 °C | +46.6% |
| 1991 | -0.3926 °C | -25.6% |
| 1992 | -0.7303 °C | +86.0% |
| 1993 | -1.01 °C | +38.1% |
| 1994 | -0.5209 °C | -48.3% |
| 1995 | -0.3218 °C | -38.2% |
| 1996 | -0.1904 °C | -40.8% |
| 1997 | -0.0246 °C | -87.1% |
| 1998 | 0.4499 °C | -1929.7% |
| 1999 | -0.1603 °C | -135.6% |
| 2000 | -0.6625 °C | +313.2% |
| 2001 | 0.055 °C | -108.3% |
| 2002 | -0.6324 °C | -1249.6% |
| 2003 | 0.2948 °C | -146.6% |
| 2004 | 0.327 °C | +10.9% |
| 2005 | -0.6345 °C | -294.1% |
| 2006 | 0.0009 °C | -100.1% |
| 2007 | 0.1225 °C | +13834.7% |
| 2008 | -0.0941 °C | -176.8% |
| 2009 | -0.0072 °C | -92.3% |
| 2010 | 0.6589 °C | -9190.2% |
| 2011 | 0.0993 °C | -84.9% |
| 2012 | 0.2093 °C | +110.7% |
| 2013 | 0.2508 °C | +19.8% |
| 2014 | -0.0661 °C | -126.4% |
| 2015 | -0.2079 °C | +214.5% |
| 2016 | -0.1021 °C | -50.9% |
| 2017 | 0.9303 °C | -1011.6% |
| 2018 | 0.354 °C | -62.0% |
| 2019 | 0.9051 °C | +155.7% |
| 2020 | 1.1 °C | +21.4% |
| 2021 | 1.14 °C | +3.5% |
| 2022 | 1.25 °C | +9.9% |
| 2023 | 0.3122 °C | -75.0% |
| 2024 | 1.36 °C | +335.4% |
| 2025 | 1.39 °C | +2.0% |
| 2026 | 0.2824 °C | -79.6% |
Sierra Leone compared with similar countries
- Sierra Leone's 0.2824 °C is above the median for low income countries, which is 0.2824 °C, 1.0× the median. (25 countries reporting)
- Sierra Leone's 0.2824 °C is below the median for Sub-Saharan Africa, which is 0.6534 °C, 43% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Temperature anomalies by month in Sierra Leone changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2007 | +13834.7% | 0.0009 °C | 0.1225 °C |
| 1986 | -10240.4% | 0.0056 °C | -0.5706 °C |
| 2010 | +9190.2% | -0.0072 °C | 0.6589 °C |
| 1998 | +1929.7% | -0.0246 °C | 0.4499 °C |
| 2002 | -1249.6% | 0.055 °C | -0.6324 °C |
| 1950 | -1195.9% | -0.0264 °C | -0.3416 °C |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -0.6951 °C | -1.46 °C | 0.1263 °C | 10 |
| 1950s | -0.4281 °C | -1.73 °C | 0.2065 °C | 10 |
| 1960s | -0.2423 °C | -1.8 °C | 0.8826 °C | 10 |
| 1970s | -0.3588 °C | -0.8306 °C | 0.4654 °C | 10 |
| 1980s | -0.1835 °C | -0.6939 °C | 0.56 °C | 10 |
| 1990s | -0.3428 °C | -1.01 °C | 0.4499 °C | 10 |
| 2000s | -0.1231 °C | -0.6625 °C | 0.327 °C | 10 |
| 2010s | 0.3032 °C | -0.2079 °C | 0.9303 °C | 10 |
| 2020s | 0.9748 °C | 0.2824 °C | 1.39 °C | 7 |
Countries ranked near Sierra Leone
More reference data data for Sierra Leone
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.0238 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.4498 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.5935 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.12 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.5935 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0797 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.044 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 1.91 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 2.72 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.6534 (2050)
Frequently asked questions
- What is temperature anomalies by month in Sierra Leone?
- Temperature anomalies by month in Sierra Leone was 0.2824 °C in 2026, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest temperature anomalies by month recorded in Sierra Leone?
- The highest recorded value was 1.39 °C in 2025.
- What is the lowest temperature anomalies by month recorded in Sierra Leone?
- The lowest recorded value was -1.8 °C in 1965.
- How does Sierra Leone rank for temperature anomalies by month?
- Sierra Leone ranks 100th out of 193 countries with data for 2026.
- Is temperature anomalies by month rising or falling in Sierra Leone?
- Over the last ten years it is up 376.8%. 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 Temperature anomalies by month. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 87 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Difference in a specific month's average surface temperature from the mean temperature of the same month during the period 1991-2020, measured in degrees Celsius.