Decadal temperature anomalies in Heard Island and McDonald Islands
Heard Island and McDonald Islands: Decadal temperature anomalies was 0.1796 °C in 2010. ◆ Volatile
Decadal temperature anomalies in Heard Island and McDonald Islands, 1940–2010
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 decadal temperature anomalies in Heard Island and McDonald Islands is 0.1796 °C, measured in 2010. That is the highest value across all 8 years on record.
The figure is up 281.3% over ten years.
Over the whole period, decadal temperature anomalies in Heard Island and McDonald Islands peaked at 0.1796 °C in 2010 and was at its lowest, -0.7038 °C, in 1940.
That places Heard Island and McDonald Islands 140th out of 193 countries with data for 2010, putting it in the middle of the range.
Decadal temperature anomalies in Heard Island and McDonald Islands, year by year
| Year | °C | Change |
|---|---|---|
| 1940 | -0.7038 °C | — |
| 1950 | -0.4475 °C | -36.4% |
| 1960 | -0.3035 °C | -32.2% |
| 1970 | -0.2917 °C | -3.9% |
| 1980 | -0.0611 °C | -79.0% |
| 1990 | -0.123 °C | +101.2% |
| 2000 | -0.099 °C | -19.5% |
| 2010 | 0.1796 °C | -281.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -0.7038 °C | -0.7038 °C | -0.7038 °C | 1 |
| 1950s | -0.4475 °C | -0.4475 °C | -0.4475 °C | 1 |
| 1960s | -0.3035 °C | -0.3035 °C | -0.3035 °C | 1 |
| 1970s | -0.2917 °C | -0.2917 °C | -0.2917 °C | 1 |
| 1980s | -0.0611 °C | -0.0611 °C | -0.0611 °C | 1 |
| 1990s | -0.123 °C | -0.123 °C | -0.123 °C | 1 |
| 2000s | -0.099 °C | -0.099 °C | -0.099 °C | 1 |
| 2010s | 0.1796 °C | 0.1796 °C | 0.1796 °C | 1 |
Countries ranked near Heard Island and McDonald Islands
More climate change data for Heard Island and McDonald Islands
- Precipitation anomalies, annual growth rate 363.4 % change on previous year (2025)
- Annual PM2.5 emissions from wildfires 0 tonnes (2026)
- Temperature anomalies vs. latitude 0.8308 °C (2025)
- Annual CO₂ emissions from wildfires 0 tonnes (2026)
Frequently asked questions
- What is decadal temperature anomalies in Heard Island and McDonald Islands?
- Decadal temperature anomalies in Heard Island and McDonald Islands was 0.1796 °C in 2010, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest decadal temperature anomalies recorded in Heard Island and McDonald Islands?
- The highest recorded value was 0.1796 °C in 2010.
- What is the lowest decadal temperature anomalies recorded in Heard Island and McDonald Islands?
- The lowest recorded value was -0.7038 °C in 1940.
- How does Heard Island and McDonald Islands rank for decadal temperature anomalies?
- Heard Island and McDonald Islands ranks 140th out of 193 countries with data for 2010.
- Is decadal temperature anomalies rising or falling in Heard Island and McDonald Islands?
- Over the last ten years it is up 281.3%. The long-run trend across the full record is volatile.
- Where does this Heard Island and McDonald Islands 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 Decadal temperature anomalies. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 8 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Difference of a specific decade's average surface temperature from the 1991-2020 mean, in degrees Celsius.