British Indian Ocean Territory

Temperature in British Indian Ocean Territory

Temperature in British Indian Ocean Territory: 26.2 °C in 1950 and 26.9 °C in 2025, by ERA5 observations.

Latest, 2025
26.9 °C
Since 1950
+0.7 °C
Rank, 2025
42 of 233
counting from the highest
Projected, 2100
28.2 °C
CMIP6 model median (SSP2-4.5, middle of the road)
Watch it change on the map

°C · ERA5

Temperature in British Indian Ocean TerritoryTemperature in British Indian Ocean Territory: 26.2 °C in 1950 and 26.9 °C in 2025, by ERA5 observations. The CMIP6 model median (SSP2-4.5, middle of the road) puts it at 28.2 °C in 2100, between 27.7 °C and 28.8 °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 28.2 °C in 2100, between 27.7 °C and 28.8 °C (models’ 10th–90th percentile).
  • The highest was 27.4 °C in 2024, the lowest 25.7 °C in 1974.

Every year

°C · ERA5

YearObserved, ERA5CMIP6 historical run, model median
202526.926.9
202427.427
202326.926.9
202226.626.9
202126.726.9
202027.126.8
201927.426.7
201826.726.8
201726.726.8
20162726.7
201527.126.7
201426.626.6
201326.826.7
201226.726.7
201126.526.6
201026.726.6
200926.526.6
200826.526.5
200726.726.5
200626.626.5
200526.626.5
200426.426.5
200326.726.5
200226.526.5
200126.626.5
200026.426.4
199926.326.3
199826.726.4
199726.626.3
199626.326.2
199526.426.2
199426.326.2
199326.326.1
199226.326
199126.626.2
199026.526.4
198926.126.3
198826.526.2
198726.626.2
198626.126.2
198525.826.1
198425.926.1
198326.626
198226.426.2
198126.226.2
198026.326.2
197926.326.1
197826.126.1
197726.226.2
19762626
197525.926
197425.726.1
197326.226.1
197226.326.1
197125.826
197026.326
196926.326
196825.926
196726.125.9
196626.226
19652625.9
196426.125.9
196326.125.9
196226.126.1
196126.226.1
196026.126.1
195926.326
195826.326.1
195726.226.1
195625.826
195525.926
19542626
195326.325.9
195226.326.1
195126.226
195026.226.1
  • 12.3Projected
CMIP6 model median (SSP2-4.5, middle of the road) · 2026–2100
YearObserved, ERA5CMIP6 historical run, model median
2026–26.926.6–27.4
2027–2726.7–27.3
2028–2726.8–27.4
2029–27.226.8–27.4
2030–2726.7–27.4
2031–2726.7–27.5
2032–27.126.8–27.6
2033–27.226.7–27.4
2034–2726.8–27.6
2035–27.126.7–27.7
2036–27.226.8–27.5
2037–27.327–27.6
2038–27.326.9–27.6
2039–27.226.9–27.6
2040–27.226.9–27.8
2041–27.326.9–27.8
2042–27.426.9–27.8
2043–27.327–27.8
2044–27.326.9–27.8
2045–27.327–27.9
2046–27.526.9–27.8
2047–27.527–27.8
2048–27.527.1–28
2049–27.427.2–28
2050–27.526.9–28
2051–27.627.2–28.1
2052–27.627.2–27.9
2053–27.527.1–28.1
2054–27.627.1–28.2
2055–27.627.3–28.1
2056–27.627.1–28.2
2057–27.827.2–28.1
2058–27.627.1–28.3
2059–27.727.3–28.3
2060–27.927.3–28.2
2061–27.627.2–28.2
2062–27.727.3–28.4
2063–27.827.2–28.3
2064–27.827.2–28.3
2065–27.827.3–28.2
2066–27.827.4–28.3
2067–27.727.2–28.4
2068–27.927.2–28.4
2069–27.827.4–28.4
2070–27.827.4–28.4
2071–2827.3–28.3
2072–27.927.4–28.4
2073–2827.5–28.7
2074–27.827.3–28.6
2075–27.927.4–28.5
2076–27.927.4–28.5
2077–2827.4–28.7
2078–27.927.5–28.6
2079–2827.5–28.6
2080–27.927.5–28.6
2081–2827.5–28.7
2082–2827.5–28.6
2083–2827.6–28.7
2084–28.227.4–28.6
2085–28.127.5–28.8
2086–2827.5–28.8
2087–28.127.5–28.8
2088–28.127.5–28.9
2089–28.127.5–28.9
2090–27.927.5–28.7
2091–2827.6–28.9
2092–28.127.7–28.8
2093–28.127.5–28.9
2094–28.127.6–28.8
2095–28.227.6–28.8
2096–28.227.5–28.9
2097–28.127.6–28.7
2098–28.227.5–28.9
2099–28.227.5–28.7
2100–28.227.7–28.8

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

British Indian Ocean Territory in numbers

Every measure for British Indian Ocean Territory on one page

Climate