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Sydney Average Temperature vs Global Temperature Anomaly
Sydney Average Temperature and Global Temperature Anomaly correlate at r = +0.71 over 66 years (1960–2025), p < 0.0001. With the time trend removed, r = +0.50. Holds up after detrending.
Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = 0.50). Correlation still isn't causation, but this one isn't an obvious artifact.
- Pearson r
- +0.71
- p-value
- < 0.0001
- Years compared (n)
- 66 (1960–2025)
- 95% confidence interval
- 0.57 to 0.81
- Correlation with the time trend removed
- +0.50
Sources
- Sydney Average Temperature (°C): Open-Meteo (ERA5). Annual mean 2m air temperature for Sydney from the ERA5 reanalysis.
- Global Temperature Anomaly (°C vs 1901–2000): NOAA NCEI. Annual global land and ocean surface temperature departure from the 1901–2000 average (NOAA NCEI).
Related pairs
- Atmospheric CO₂ (Mauna Loa) vs Global Temperature Anomaly (r = +0.97)
- Global Temperature Anomaly vs US GDP per Capita (r = +0.97)
- Global Temperature Anomaly vs US GDP (current US$) (r = +0.96)
- Global Temperature Anomaly vs US Population (r = +0.95)
- Global Temperature Anomaly vs US Cereal Yield (r = +0.94)
- Global Temperature Anomaly vs Atmospheric Methane (global) (r = +0.94)
Correlation does not imply causation. How the verdict is worked out.