Sierra Leone

Temperature in Sierra Leone

Temperature in Sierra Leone: 24.9 °C in 1950 and 26.3 °C in 2025, by ERA5 observations.

Latest, 2025
26.3 °C
Since 1950
+1.4 °C
Rank, 2025
68 of 233
counting from the highest
Projected, 2100
28.7 °C
CMIP6 model median (SSP2-4.5, middle of the road)
Watch it change on the map

°C · ERA5

Temperature in Sierra LeoneTemperature in Sierra Leone: 24.9 °C in 1950 and 26.3 °C in 2025, by ERA5 observations. The CMIP6 model median (SSP2-4.5, middle of the road) puts it at 28.7 °C in 2100, between 27.9 °C and 29.4 °C (models’ 10th–90th percentile).
Observed, ERA5CMIP6 historical run, model medianCMIP6 model median (SSP2-4.5, middle of the road)models’ 10th–90th percentile

What the numbers say

  • The CMIP6 model median (SSP2-4.5, middle of the road) puts it at 28.7 °C in 2100, between 27.9 °C and 29.4 °C (models’ 10th–90th percentile).
  • The highest was 26.9 °C in 2024, the lowest 24.5 °C in 1954.

Every year

°C · ERA5

YearObserved, ERA5CMIP6 historical run, model median
202526.327
202426.927.1
202326.427
202226.227
202126.426.9
202026.426.8
201926.426.8
20182626.8
201726.326.8
201626.126.6
201525.826.8
201425.626.7
201325.826.7
201225.526.7
201125.626.6
201025.826.6
200925.826.5
200825.526.5
200725.826.5
200625.826.5
200525.626.5
200425.726.5
200325.826.5
200225.726.4
200125.526.5
200025.426.4
199925.526.3
199826.126.4
199725.726.3
199625.626.2
199525.626.2
199425.326.1
199325.426
199225.225.9
199125.526.2
199025.626.3
198925.726.2
198825.926.1
198726.126.1
198625.526.2
198525.526
198425.526.1
198325.726
198225.426.1
198125.426.1
198025.526.1
197925.726.1
197825.326
197725.626
19762526
197525.325.9
197425.326.1
197325.926.1
197225.426
19712526
197025.426
196925.226
196825.225.9
196725.125.8
196625.425.8
19652525.9
196425.225.7
196325.425.7
196225.126
196125.225.9
196025.226.1
195925.126
195824.826
195724.726
195624.625.9
195524.725.9
195424.526
195325.226
195225.125.9
195124.826
195024.925.9
  • 12.3Projected
CMIP6 model median (SSP2-4.5, middle of the road) · 2026–2100
YearObserved, ERA5CMIP6 historical run, model median
2026–27.126.4–27.5
2027–27.126.4–27.6
2028–27.226.7–27.5
2029–27.326.7–27.7
2030–27.226.7–27.6
2031–27.326.7–27.7
2032–27.326.8–27.8
2033–27.426.7–27.8
2034–27.226.9–27.8
2035–27.326.9–27.9
2036–27.326.9–27.7
2037–27.426.9–27.9
2038–27.527.1–28
2039–27.427–27.8
2040–27.427–28
2041–27.527–28
2042–27.627–28
2043–27.426.9–28
2044–27.527.1–28.1
2045–27.627.1–28
2046–27.727.2–28.1
2047–27.827.2–28.1
2048–27.827.3–28.2
2049–27.827.2–28.2
2050–27.727.2–28.3
2051–27.727.3–28.4
2052–27.927.3–28.3
2053–27.927.2–28.4
2054–27.927.3–28.5
2055–27.927.3–28.5
2056–27.927.2–28.7
2057–2827.2–28.5
2058–27.927.4–28.6
2059–2827.5–28.7
2060–28.127.5–28.6
2061–2827.3–28.8
2062–27.927.3–28.6
2063–28.127.5–28.8
2064–28.127.5–28.7
2065–28.227.4–28.8
2066–28.127.5–29
2067–2827.4–28.8
2068–28.327.6–28.8
2069–28.227.4–28.9
2070–28.127.4–29
2071–28.127.5–29
2072–28.327.7–28.9
2073–28.427.5–29.2
2074–28.127.5–29.1
2075–28.127.5–29
2076–28.327.6–29.1
2077–28.527.6–29.2
2078–28.327.9–29.2
2079–28.327.6–29
2080–28.427.5–29.2
2081–28.327.7–29.2
2082–28.427.6–29.1
2083–28.427.8–29.3
2084–28.427.8–29.2
2085–28.627.7–29.3
2086–28.527.7–29.3
2087–28.527.7–29.3
2088–28.527.6–29.3
2089–28.327.7–29.3
2090–28.427.8–29.3
2091–28.627.8–29.3
2092–28.627.9–29.4
2093–28.527.9–29.4
2094–28.527.8–29.4
2095–28.627.9–29.5
2096–28.527.8–29.6
2097–28.527.8–29.4
2098–28.727.8–29.5
2099–28.627.7–29.6
2100–28.727.9–29.4

Good to know

  • The average air temperature near the ground, over the whole country and the whole year.
  • Source: ERA5 reanalysis (Copernicus, ECMWF) and CMIP6, via the World Bank Climate Change Knowledge Portal.
  • The dashed line is the CMIP6 model median (SSP2-4.5, middle of the road), a scenario rather than a forecast; the band is its models’ 10th–90th percentile.
  • Climate model values are the median of the CMIP6 models, run on past emissions to 2014 and on SSP2-4.5, a middle-of-the-road path, after: they are not measurements.
  • Ranks count the 233 countries with a value in 2025, highest first.

How the layers work, where their data comes from and what they can’t tell you: Countries through time

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