Autumn temperature anomalies in Sierra Leone
Sierra Leone: Autumn temperature anomalies was 0.1314 °C in 2025. ◆ Volatile
Autumn temperature 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 °C.
Analysis
The most recent figure for autumn temperature anomalies in Sierra Leone is 0.1314 °C, measured in 2025.
Compared with earlier readings it is down 59.6% on the previous year and down 57.0% over ten years.
Over the whole period, autumn temperature anomalies in Sierra Leone peaked at 0.9684 °C in 2023 and was at its lowest, -1.46 °C, in 1943.
That places Sierra Leone 165th out of 193 countries with data for 2025, putting it in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Autumn temperature anomalies in Sierra Leone, year by year
| Year | °C | Change |
|---|---|---|
| 1940 | -0.61 °C | — |
| 1941 | -1.1 °C | +80.7% |
| 1942 | -0.9573 °C | -13.2% |
| 1943 | -1.46 °C | +52.6% |
| 1944 | -1.14 °C | -21.9% |
| 1945 | -0.601 °C | -47.4% |
| 1946 | -1.15 °C | +91.9% |
| 1947 | -1.1 °C | -4.7% |
| 1948 | -1.01 °C | -7.8% |
| 1949 | -0.8311 °C | -18.0% |
| 1950 | -1.11 °C | +34.0% |
| 1951 | -0.6032 °C | -45.8% |
| 1952 | -1.42 °C | +136.0% |
| 1953 | -0.4622 °C | -67.5% |
| 1954 | -1.07 °C | +131.4% |
| 1955 | -1.13 °C | +5.5% |
| 1956 | -1.29 °C | +14.0% |
| 1957 | -1.02 °C | -21.0% |
| 1958 | -0.8423 °C | -17.1% |
| 1959 | -0.9536 °C | +13.2% |
| 1960 | -1.03 °C | +7.9% |
| 1961 | -0.9003 °C | -12.5% |
| 1962 | -0.8397 °C | -6.7% |
| 1963 | -0.3656 °C | -56.5% |
| 1964 | -1.41 °C | +285.9% |
| 1965 | -0.6681 °C | -52.7% |
| 1966 | -0.8002 °C | +19.8% |
| 1967 | -0.9651 °C | +20.6% |
| 1968 | -0.4478 °C | -53.6% |
| 1969 | -0.6619 °C | +47.8% |
| 1970 | -0.5121 °C | -22.6% |
| 1971 | -0.8469 °C | +65.4% |
| 1972 | 0.1739 °C | -120.5% |
| 1973 | -0.1123 °C | -164.6% |
| 1974 | -0.7563 °C | +573.5% |
| 1975 | -0.8409 °C | +11.2% |
| 1976 | -0.2354 °C | -72.0% |
| 1977 | -0.2385 °C | +1.3% |
| 1978 | -0.5223 °C | +119.0% |
| 1979 | 0.1866 °C | -135.7% |
| 1980 | 0.2043 °C | +9.5% |
| 1981 | -0.1376 °C | -167.3% |
| 1982 | 0.2937 °C | -313.5% |
| 1983 | 0.0413 °C | -85.9% |
| 1984 | -0.1739 °C | -520.6% |
| 1985 | -0.4952 °C | +184.8% |
| 1986 | -0.4835 °C | -2.4% |
| 1987 | 0.2286 °C | -147.3% |
| 1988 | -0.1759 °C | -177.0% |
| 1989 | -0.0576 °C | -67.3% |
| 1990 | 0.0904 °C | -256.9% |
| 1991 | 0.1844 °C | +104.1% |
| 1992 | -0.3647 °C | -297.8% |
| 1993 | -0.0441 °C | -87.9% |
| 1994 | -0.4462 °C | +911.1% |
| 1995 | 0.0453 °C | -110.2% |
| 1996 | -0.3108 °C | -786.0% |
| 1997 | 0.2052 °C | -166.0% |
| 1998 | -0.2449 °C | -219.3% |
| 1999 | -0.4392 °C | +79.3% |
| 2000 | -0.2424 °C | -44.8% |
| 2001 | -0.252 °C | +4.0% |
| 2002 | -0.0247 °C | -90.2% |
| 2003 | -0.0448 °C | +81.6% |
| 2004 | 0.0222 °C | -149.6% |
| 2005 | 0.3647 °C | +1541.3% |
| 2006 | 0.0665 °C | -81.8% |
| 2007 | -0.0947 °C | -242.4% |
| 2008 | -0.0631 °C | -33.4% |
| 2009 | 0.0427 °C | -167.7% |
| 2010 | -0.3977 °C | -1032.3% |
| 2011 | 0.0753 °C | -118.9% |
| 2012 | -0.3371 °C | -547.6% |
| 2013 | 0.0835 °C | -124.8% |
| 2014 | -0.1102 °C | -232.0% |
| 2015 | 0.3056 °C | -377.2% |
| 2016 | 0.3292 °C | +7.7% |
| 2017 | 0.6205 °C | +88.5% |
| 2018 | 0.2549 °C | -58.9% |
| 2019 | 0.5243 °C | +105.7% |
| 2020 | 0.2924 °C | -44.2% |
| 2021 | 0.5755 °C | +96.8% |
| 2022 | 0.0707 °C | -87.7% |
| 2023 | 0.9684 °C | +1269.7% |
| 2024 | 0.3255 °C | -66.4% |
| 2025 | 0.1314 °C | -59.6% |
Sierra Leone compared with similar countries
- Sierra Leone's 0.1314 °C is below the median for low income countries, which is 0.4071 °C, 32% of the median. (25 countries reporting)
- Sierra Leone's 0.1314 °C is below the median for Sub-Saharan Africa, which is 0.4129 °C, 32% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Autumn temperature anomalies 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 |
|---|---|---|---|
| 2005 | +1541.3% | 0.0222 °C | 0.3647 °C |
| 2023 | +1269.7% | 0.0707 °C | 0.9684 °C |
| 2010 | -1032.3% | 0.0427 °C | -0.3977 °C |
| 1994 | -911.1% | -0.0441 °C | -0.4462 °C |
| 1996 | -786.0% | 0.0453 °C | -0.3108 °C |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -0.997 °C | -1.46 °C | -0.601 °C | 10 |
| 1950s | -0.9899 °C | -1.42 °C | -0.4622 °C | 10 |
| 1960s | -0.8088 °C | -1.41 °C | -0.3656 °C | 10 |
| 1970s | -0.3704 °C | -0.8469 °C | 0.1866 °C | 10 |
| 1980s | -0.0756 °C | -0.4952 °C | 0.2937 °C | 10 |
| 1990s | -0.1325 °C | -0.4462 °C | 0.2052 °C | 10 |
| 2000s | -0.0226 °C | -0.252 °C | 0.3647 °C | 10 |
| 2010s | 0.1348 °C | -0.3977 °C | 0.6205 °C | 10 |
| 2020s | 0.394 °C | 0.0707 °C | 0.9684 °C | 6 |
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 autumn temperature anomalies in Sierra Leone?
- Autumn temperature anomalies in Sierra Leone was 0.1314 °C in 2025, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest autumn temperature anomalies recorded in Sierra Leone?
- The highest recorded value was 0.9684 °C in 2023.
- What is the lowest autumn temperature anomalies recorded in Sierra Leone?
- The lowest recorded value was -1.46 °C in 1943.
- How does Sierra Leone rank for autumn temperature anomalies?
- Sierra Leone ranks 165th out of 193 countries with data for 2025.
- Is autumn temperature anomalies rising or falling in Sierra Leone?
- Over the last ten years it is down 57.0%. 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 Autumn temperature 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
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.