Temperature change in Tonga
Tonga: Temperature change was 0.858 °C in 2025. ◆ Volatile
Temperature change in Tonga, 1961–2025
Source: Food and Agriculture Organization of the United Nations. Measured in °C.
Analysis
Tonga recorded 0.858 °C for temperature change in 2025.
That represents a change of down 37.7% on the previous year and up 54.6% over ten years.
Over the whole period, temperature change in Tonga peaked at 1.4 °C in 2019 and was at its lowest, -0.548 °C, in 1965.
Tonga ranks 209th of 233 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Temperature change in Tonga, year by year
| Year | °C | Change |
|---|---|---|
| 1961 | 0.403 °C | — |
| 1962 | -0.116 °C | -128.8% |
| 1963 | -0.218 °C | +87.9% |
| 1964 | 0.298 °C | -236.7% |
| 1965 | -0.548 °C | -283.9% |
| 1966 | -0.356 °C | -35.0% |
| 1967 | -0.156 °C | -56.2% |
| 1968 | 0.052 °C | -133.3% |
| 1969 | -0.165 °C | -417.3% |
| 1970 | 0.323 °C | -295.8% |
| 1971 | 0.096 °C | -70.3% |
| 1972 | -0.09 °C | -193.8% |
| 1973 | 0.351 °C | -490.0% |
| 1974 | 0.014 °C | -96.0% |
| 1975 | -0.007 °C | -150.0% |
| 1976 | -0.25 °C | +3471.4% |
| 1977 | -0.093 °C | -62.8% |
| 1978 | 0.056 °C | -160.2% |
| 1979 | 0.122 °C | +117.9% |
| 1980 | 0.101 °C | -17.2% |
| 1981 | 0.045 °C | -55.4% |
| 1982 | 0.087 °C | +93.3% |
| 1983 | -0.003 °C | -103.4% |
| 1984 | 0.24 °C | -8100.0% |
| 1985 | 0.158 °C | -34.2% |
| 1986 | -0.023 °C | -114.6% |
| 1987 | -0.052 °C | +126.1% |
| 1988 | 0.749 °C | -1540.4% |
| 1989 | 0.403 °C | -46.2% |
| 1990 | 0.336 °C | -16.6% |
| 1991 | 0.311 °C | -7.4% |
| 1992 | 0.194 °C | -37.6% |
| 1993 | -0.091 °C | -146.9% |
| 1994 | 0.193 °C | -312.1% |
| 1995 | 0.435 °C | +125.4% |
| 1996 | 0.252 °C | -42.1% |
| 1997 | 0.132 °C | -47.6% |
| 1998 | 0.154 °C | +16.7% |
| 1999 | 0.071 °C | -53.9% |
| 2000 | 0.224 °C | +215.5% |
| 2001 | 0.522 °C | +133.0% |
| 2002 | 0.636 °C | +21.8% |
| 2003 | 0.233 °C | -63.4% |
| 2004 | 0.374 °C | +60.5% |
| 2005 | 0.566 °C | +51.3% |
| 2006 | 0.348 °C | -38.5% |
| 2007 | 0.707 °C | +103.2% |
| 2008 | 0.224 °C | -68.3% |
| 2009 | 0.289 °C | +29.0% |
| 2010 | 0.79 °C | +173.4% |
| 2011 | 0.486 °C | -38.5% |
| 2012 | 0.568 °C | +16.9% |
| 2013 | 0.815 °C | +43.5% |
| 2014 | 0.509 °C | -37.5% |
| 2015 | 0.555 °C | +9.0% |
| 2016 | 1.08 °C | +94.6% |
| 2017 | 0.873 °C | -19.2% |
| 2018 | 0.827 °C | -5.3% |
| 2019 | 1.4 °C | +68.8% |
| 2020 | 1.21 °C | -13.6% |
| 2021 | 0.985 °C | -18.3% |
| 2022 | 0.666 °C | -32.4% |
| 2023 | 1 °C | +50.6% |
| 2024 | 1.38 °C | +37.4% |
| 2025 | 0.858 °C | -37.7% |
Tonga compared with similar countries
- Tonga's 0.858 °C is below the median for upper middle income countries, which is 1.4 °C, 61% of the median. (52 countries reporting)
- Tonga's 0.858 °C is below the median for East Asia & Pacific, which is 1.01 °C, 85% of the median. (26 countries reporting)
Biggest year-on-year movements
Years where Temperature change in Tonga 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 |
|---|---|---|---|
| 1984 | +8100.0% | -0.003 °C | 0.24 °C |
| 1976 | -3471.4% | -0.007 °C | -0.25 °C |
| 1988 | +1540.4% | -0.052 °C | 0.749 °C |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | -0.0896 °C | -0.548 °C | 0.403 °C | 9 |
| 1970s | 0.0522 °C | -0.25 °C | 0.351 °C | 10 |
| 1980s | 0.1705 °C | -0.052 °C | 0.749 °C | 10 |
| 1990s | 0.1987 °C | -0.091 °C | 0.435 °C | 10 |
| 2000s | 0.4123 °C | 0.224 °C | 0.707 °C | 10 |
| 2010s | 0.7899 °C | 0.486 °C | 1.4 °C | 10 |
| 2020s | 1.02 °C | 0.666 °C | 1.38 °C | 6 |
Countries ranked near Tonga
- 206 Cook Islands 0.886 °C compare
- 207 French Southern Territories 0.866 °C compare
- 208 French Polynesia 0.863 °C compare
- 210 Sri Lanka 0.849 °C compare
- 211 Tuvalu 0.836 °C compare
- 212 Papua New Guinea 0.834 °C compare
More environment data for Tonga
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.234 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 3.06 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 0.1689 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), annual 0 % change on previous year (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), per unit of 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is temperature change in Tonga?
- Temperature change in Tonga was 0.858 °C in 2025, according to Food and Agriculture Organization of the United Nations.
- What is the highest temperature change recorded in Tonga?
- The highest recorded value was 1.4 °C in 2019.
- What is the lowest temperature change recorded in Tonga?
- The lowest recorded value was -0.548 °C in 1965.
- How does Tonga rank for temperature change?
- Tonga ranks 209th out of 233 countries with data for 2025.
- Is temperature change rising or falling in Tonga?
- Over the last ten years it is up 54.6%. The long-run trend across the full record is volatile.
- Where does this Tonga data come from?
- The figures come from Food and Agriculture Organization of the United Nations, published as part of Temperature change. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 65 observations, free to reuse under CC BY-NC-SA 3.0 IGO (FAO).
About this data
The FAOSTAT Temperature change on land domain disseminates statistics of mean surface temperature change by country, with annual updates. Statistics are available for monthly, seasonal and annual mean temperature anomalies, i.e., temperature change with respect to a baseline climatology, corresponding to the period 1951–1980. The standard deviation of the temperature change of the baseline methodology is also available. Data are based on the publicly available GISTEMP data, the Global Surface Temperature Change data distributed by the National Aeronautics and Space Administration Goddard Institute for Space Studies (NASA-GISS).