Winter temperature anomalies in Heard Island and McDonald Islands
Heard Island and McDonald Islands: Winter temperature anomalies was 0.8706 °C in 2025. ◆ Volatile
Winter temperature anomalies in Heard Island and McDonald Islands, 1940–2025
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in °C.
Analysis
Heard Island and McDonald Islands recorded 0.8706 °C for winter temperature anomalies in 2025. That is the highest value across all 86 years on record.
The figure is up 226.5% on the previous year and up 421.9% over ten years.
Over the whole period, winter temperature anomalies in Heard Island and McDonald Islands peaked at 0.8706 °C in 2025 and was at its lowest, -1.12 °C, in 1976.
Heard Island and McDonald Islands ranks 89th of 193 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | -0.477 °C | -0.8976 °C | -0.0667 °C | 10 |
| 1950s | -0.3668 °C | -0.8333 °C | 0.1189 °C | 10 |
| 1960s | -0.1912 °C | -0.5762 °C | 0.0856 °C | 10 |
| 1970s | -0.4843 °C | -1.12 °C | 0.1767 °C | 10 |
| 1980s | 0.0102 °C | -0.3402 °C | 0.5055 °C | 10 |
| 1990s | -0.2248 °C | -0.6438 °C | 0.2314 °C | 10 |
| 2000s | -0.041 °C | -0.3964 °C | 0.6585 °C | 10 |
| 2010s | 0.1932 °C | -0.2705 °C | 0.816 °C | 10 |
| 2020s | 0.457 °C | 0.1066 °C | 0.8706 °C | 6 |
Countries ranked near Heard Island and McDonald Islands
More reference data data for Heard Island and McDonald Islands
- Summer temperature anomalies 1.56 °C (2026)
- Spring temperature anomalies 0.8521 °C (2026)
- Temperature anomalies by month 0.876 °C (2026)
- Annual precipitation 1,377 millimeters (2025)
- Precipitation anomalies 29.5 millimeters (2025)
- Autumn temperature anomalies 0.9668 °C (2025)
- Annual temperature anomalies 0.8308 °C (2025)
- Average annual surface temperature 2.45 °C (2025)
- Red List Index 0.93 index (2024)
- Member countries of the International Treaty on Plant Genetic Resources for Food and Agriculture 0 number (2024)
Frequently asked questions
- What is winter temperature anomalies in Heard Island and McDonald Islands?
- Winter temperature anomalies in Heard Island and McDonald Islands was 0.8706 °C in 2025, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest winter temperature anomalies recorded in Heard Island and McDonald Islands?
- The highest recorded value was 0.8706 °C in 2025.
- What is the lowest winter temperature anomalies recorded in Heard Island and McDonald Islands?
- The lowest recorded value was -1.12 °C in 1976.
- How does Heard Island and McDonald Islands rank for winter temperature anomalies?
- Heard Island and McDonald Islands ranks 89th out of 193 countries with data for 2025.
- Is winter temperature anomalies rising or falling in Heard Island and McDonald Islands?
- Over the last ten years it is up 421.9%. 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 Winter temperature anomalies. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 86 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
The difference in a specific month's average surface temperature from the mean temperature of the same month during the period 1991-2020, measured in degrees Celsius.