Tonga
Temperature in Tonga
Temperature in Tonga: 24.7 °C in 1950 and 25.1 °C in 2025, by ERA5 observations.
- Latest, 2025
- 25.1 °C
- Since 1950
- +0.4 °C
- Rank, 2025
- 94 of 233
- counting from the highest
- Projected, 2100
- 26.1 °C
- CMIP6 model median (SSP2-4.5, middle of the road)
°C · ERA5
What the numbers say
- The CMIP6 model median (SSP2-4.5, middle of the road) puts it at 26.1 °C in 2100, between 25.1 °C and 26.8 °C (models’ 10th–90th percentile).
- The highest was 25.5 °C in 2022, the lowest 23.9 °C in 1977.
Every year
°C · ERA5
| Year | Observed, ERA5 | CMIP6 historical run, model median |
|---|---|---|
| 2025 | 25.1 | 25.2 |
| 2024 | 25.3 | 25.2 |
| 2023 | 25 | 25.1 |
| 2022 | 25.5 | 25.1 |
| 2021 | 25.1 | 25 |
| 2020 | 25.2 | 25 |
| 2019 | 25 | 25.1 |
| 2018 | 25 | 24.9 |
| 2017 | 25.1 | 25 |
| 2016 | 25.1 | 24.9 |
| 2015 | 24.3 | 24.9 |
| 2014 | 24.7 | 24.8 |
| 2013 | 25.3 | 25 |
| 2012 | 24.9 | 24.9 |
| 2011 | 25.2 | 24.8 |
| 2010 | 25.1 | 24.7 |
| 2009 | 24.3 | 24.9 |
| 2008 | 24.9 | 24.8 |
| 2007 | 25 | 24.9 |
| 2006 | 24.8 | 25 |
| 2005 | 24.9 | 24.9 |
| 2004 | 24.8 | 24.9 |
| 2003 | 24.6 | 24.8 |
| 2002 | 24.9 | 24.8 |
| 2001 | 24.8 | 24.8 |
| 2000 | 25 | 24.7 |
| 1999 | 24.8 | 24.8 |
| 1998 | 24.7 | 24.6 |
| 1997 | 24.4 | 24.6 |
| 1996 | 24.8 | 24.7 |
| 1995 | 24.6 | 24.7 |
| 1994 | 24.1 | 24.5 |
| 1993 | 24.1 | 24.5 |
| 1992 | 24.3 | 24.4 |
| 1991 | 24.5 | 24.5 |
| 1990 | 24.6 | 24.6 |
| 1989 | 24.6 | 24.6 |
| 1988 | 25 | 24.6 |
| 1987 | 23.9 | 24.6 |
| 1986 | 24 | 24.5 |
| 1985 | 24.4 | 24.5 |
| 1984 | 24.6 | 24.4 |
| 1983 | 24.2 | 24.3 |
| 1982 | 24.2 | 24.5 |
| 1981 | 24.3 | 24.4 |
| 1980 | 24.4 | 24.6 |
| 1979 | 24.4 | 24.5 |
| 1978 | 24.1 | 24.5 |
| 1977 | 23.9 | 24.4 |
| 1976 | 24.3 | 24.4 |
| 1975 | 24.6 | 24.4 |
| 1974 | 24.8 | 24.5 |
| 1973 | 24.9 | 24.4 |
| 1972 | 24.3 | 24.4 |
| 1971 | 24.7 | 24.5 |
| 1970 | 24.7 | 24.4 |
| 1969 | 24.2 | 24.4 |
| 1968 | 24.6 | 24.4 |
| 1967 | 24.5 | 24.4 |
| 1966 | 24.1 | 24.3 |
| 1965 | 24.1 | 24.2 |
| 1964 | 24.8 | 24.1 |
| 1963 | 24.5 | 24.2 |
| 1962 | 24.4 | 24.4 |
| 1961 | 24.4 | 24.5 |
| 1960 | 24.5 | 24.4 |
| 1959 | 24.3 | 24.4 |
| 1958 | 24.4 | 24.3 |
| 1957 | 24.3 | 24.4 |
| 1956 | 24.7 | 24.4 |
| 1955 | 24.6 | 24.3 |
| 1954 | 24.5 | 24.1 |
| 1953 | 24.6 | 24.2 |
| 1952 | 24.9 | 24.4 |
| 1951 | 24.3 | 24.3 |
| 1950 | 24.7 | 24.5 |
- 12.3Projected
CMIP6 model median (SSP2-4.5, middle of the road) · 2026–2100
| Year | Observed, ERA5 | CMIP6 historical run, model median |
|---|---|---|
| 2026 | – | 25.324.6–25.6 |
| 2027 | – | 25.224.6–25.6 |
| 2028 | – | 25.224.7–25.5 |
| 2029 | – | 25.224.7–25.9 |
| 2030 | – | 25.324.8–25.6 |
| 2031 | – | 25.124.7–25.5 |
| 2032 | – | 25.224.5–25.6 |
| 2033 | – | 25.424.8–25.7 |
| 2034 | – | 25.224.7–25.7 |
| 2035 | – | 25.525–25.8 |
| 2036 | – | 25.424.8–25.8 |
| 2037 | – | 25.324.8–25.8 |
| 2038 | – | 25.424.7–25.9 |
| 2039 | – | 25.624.9–25.9 |
| 2040 | – | 25.324.8–25.9 |
| 2041 | – | 25.425–25.9 |
| 2042 | – | 25.525–25.9 |
| 2043 | – | 25.524.8–26 |
| 2044 | – | 25.524.9–25.9 |
| 2045 | – | 25.525.1–26.1 |
| 2046 | – | 25.525–25.9 |
| 2047 | – | 25.525–26.1 |
| 2048 | – | 25.524.9–25.9 |
| 2049 | – | 25.525.1–26.1 |
| 2050 | – | 25.525.2–26.1 |
| 2051 | – | 25.625.2–26.1 |
| 2052 | – | 25.625–26.1 |
| 2053 | – | 25.525.2–26.1 |
| 2054 | – | 25.625.2–26.3 |
| 2055 | – | 25.824.9–26.3 |
| 2056 | – | 25.825.2–26.2 |
| 2057 | – | 25.825.3–26.2 |
| 2058 | – | 25.725.1–26.3 |
| 2059 | – | 25.825.1–26.2 |
| 2060 | – | 25.925.2–26.3 |
| 2061 | – | 25.825.3–26.4 |
| 2062 | – | 25.825.1–26.3 |
| 2063 | – | 25.825.1–26.4 |
| 2064 | – | 25.825.1–26.4 |
| 2065 | – | 25.825.2–26.4 |
| 2066 | – | 25.825.4–26.4 |
| 2067 | – | 25.925.4–26.2 |
| 2068 | – | 25.825.4–26.3 |
| 2069 | – | 2625.3–26.4 |
| 2070 | – | 2625.5–26.4 |
| 2071 | – | 2625.2–26.6 |
| 2072 | – | 25.825.2–26.4 |
| 2073 | – | 25.925.4–26.4 |
| 2074 | – | 25.925.2–26.7 |
| 2075 | – | 2625.5–26.5 |
| 2076 | – | 25.925.5–26.5 |
| 2077 | – | 25.925.3–26.6 |
| 2078 | – | 26.325.4–26.7 |
| 2079 | – | 2625.4–26.6 |
| 2080 | – | 2625.5–26.5 |
| 2081 | – | 2625.5–26.5 |
| 2082 | – | 26.125.4–26.6 |
| 2083 | – | 2625.6–26.6 |
| 2084 | – | 26.125.4–26.7 |
| 2085 | – | 26.125.2–26.6 |
| 2086 | – | 26.125.5–26.6 |
| 2087 | – | 26.125.3–26.7 |
| 2088 | – | 26.125.5–26.7 |
| 2089 | – | 26.125.6–26.8 |
| 2090 | – | 2625.6–27 |
| 2091 | – | 26.125.4–26.8 |
| 2092 | – | 26.125.4–26.9 |
| 2093 | – | 26.225.6–27.1 |
| 2094 | – | 26.325.5–26.8 |
| 2095 | – | 26.225.5–26.6 |
| 2096 | – | 26.225.5–26.9 |
| 2097 | – | 26.125.7–26.6 |
| 2098 | – | 26.125.5–27 |
| 2099 | – | 26.325.5–26.9 |
| 2100 | – | 26.125.1–26.8 |
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
Tonga in numbers
Every measure for Tonga on one page