Reference Data in Heard Island and McDonald Islands
17 indicators covering reference data for Heard Island and McDonald Islands.
| Indicator | Latest | Year | 10-yr change | Rank |
|---|---|---|---|---|
| Country level monthly temperature anomalies | 0.876 | 2026 | up 376.3% | 46th |
| Spring temperature anomalies | 0.8521 | 2026 | up 349.1% | 61st |
| Summer temperature anomalies | 1.56 | 2026 | up 131.8% | 40th |
| Average precipitation per year | 1,377 | 2025 | up 2.9% | 61st |
| Global precipitation anomaly | 29.5 | 2025 | up 407.3% | 63rd |
| Winter temperature anomalies | 0.8706 | 2025 | up 421.9% | 89th |
| Autumn temperature anomalies | 0.9668 | 2025 | up 549.3% | 56th |
| Average annual surface temperature | 2.45 | 2025 | up 67.9% | 188th |
| Annual temperature anomalies | 0.8308 | 2025 | up 623.1% | 68th |
| Red list index | 0.93 | 2024 | up 1.1% | 57th |
| Countries to the international treaty on plant genetic resources | 0 | 2024 | — | 150th |
| Annual area burnt per wildfire vs number of fires | 0 | 2026 | — | 172nd |
| Annual number of fires | 0 | 2026 | — | 172nd |
| Annual area burnt by wildfires | 0 | 2026 | — | 172nd |
| Chlorophyll a deviation from the global average | 3.27 | 2022 | down 3.3% | 61st |
| Breakdown habitable land | 0 | 2019 | — | 210th |
| Decadal average surface temperature | 1.8 | 2010 | up 18.4% | 185th |