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Heard Island and McDonald Islands

Country profile

Temperature anomaly
0.83
°C vs 1991-2020 · 2025
68th of 193 countries
19402025

Heard Island and McDonald Islands in stripes: every year since 1940, blue cooler than the 1991-2020 average, red hotter.

The future under three scenarios

Temperature vs 1991-2020, observed and projected to 2100

021950200020502100Low · SSP1-2.6Middle · SSP2-4.5High · SSP5-8.5low 1944

Solid line: observed (Copernicus ERA5). Dashed lines: CMIP6 multi-model median under three IPCC emissions scenarios, anchored to the observed 2015-2024 average, from the World Bank Climate Change Knowledge Portal. Scenarios are futures the world can still choose between, not predictions.

Climate

Temperature anomaly

0.83 °C vs 1991-2020 · 2025
+1.0 °C since 199568th highest of 193 · 2025
-1-0.500.519401960198020002020Worldlow 1944

How much warmer or cooler a country's year was compared with its 1991-2020 average. Watch the map turn red as you move the slider towards today. Copernicus Climate Change Service (ERA5) via Our World in Data

Water

Annual precipitation

1,377 mm/year · 2025
+2.1% since 199561st highest of 192 · 2025
05001k1.5k19401960198020002020Worldhigh 2019low 1949

Total rain and snow that fell over a country in a year, averaged across its land area. Copernicus Climate Change Service (ERA5) via Our World in Data

Rainfall anomaly

11.3 % vs 1961-1990 · 2025
+2.3 pp since 199531st highest of 192 · 2025
-2002019401960198020002020Worldhigh 2019low 1949

How much wetter (teal) or drier (brown) a country's year was compared with its 1961-1990 average. A simple drought and deluge signal. Derived from Copernicus ERA5 precipitation via Our World in Data

Land & Life

Red List Index

0.93 index (1 = species safe) · 2024
+1.1% since 199457th highest of 244 · 2024
00.51200020102020high 2016

Tracks extinction risk across all assessed species. 1 means no species at risk; falling values mean wildlife sliding towards extinction. IUCN / SDG 15.5.1 via Our World in Data

What can one person do?

  • Fly less
    One long-haul return flight can outweigh a year of other savings. Swap one flight for a train trip or a call.
  • Eat more plants
    Shifting towards a plant-rich diet is one of the largest steady cuts a person can make, and it starts with single meals.
  • Travel without a car where you can
    Walking, cycling and public transport beat an electric car; an electric car beats petrol.
  • Use your voice
    Personal footprints matter, but system change matters more. Vote, ask your employer and bank what they are doing, and talk about it.

Based on the highest-impact personal actions identified by Wynes & Nicholas (2017) and the IPCC's AR6 report on demand-side mitigation.