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Sydney records hottest June since 1859 as expert warns new high a ‘signature’ of global warming

Sydney records hottest June since 1859 as expert warns new high a ‘signature’ of global warming

Summary

Sydney experienced its hottest June since records started in 1859, with a new average temperature record of 16.1°C. Experts say this unusual warmth is linked to global warming, driven by rising ocean temperatures and ongoing emissions.

Key Facts

  • June 2026 had the highest average temperature recorded in Sydney since 1859.
  • Records showed 15 consecutive days with temperatures above 20°C, beating the previous record of 9 days in 1919.
  • The average maximum temperature was 20°C and the average minimum was 12.2°C, both near their highest recorded levels.
  • Scientists link the warmth to record-high ocean temperatures off the coast of New South Wales (NSW).
  • Warm ocean waters release heat into the air during winter, keeping Sydney unusually warm.
  • Climate experts say these changes reflect global warming driven by insufficient cuts to greenhouse gas emissions worldwide.
  • The warmth can increase fire risks later in the year by drying out soil and vegetation.
  • Officials warn that Australia is not prepared for the extreme heat and urgent planning is needed.
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