Temperature anomalies by month in Sierra Leone
Sierra Leone: Temperature anomalies by month was 0.2824 °C in 2026. ◆ Volatile
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 climate change data for Sierra Leone
- Nutrient nitrogen N (total) — Synthetic fertilizers (Agricultural) 3.65 million kg (2050)
- Emissions from livestock — Emissions (CO2eq) 1,547 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from N2O 538.77 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from CH4 1,008 kt (2050)
- Emissions from livestock — Emissions 2.03 kt (2050)
- Emissions from livestock — Emissions 36.02 kt (2050)
- Emissions from crops — Emissions (CO2eq) 1,431 kt (2050)
- Emissions from crops — Emissions (CO2eq) from N2O 201.66 kt (2050)
- Emissions from crops — Emissions (CO2eq) from CH4 1,229 kt (2050)
- Emissions from crops — Emissions 0.761 kt (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.