Sydney has experienced a striking burst of summer-like heat barely days into spring, with temperatures climbing to around 33°C—nearly 13°C above the September average. At Observatory Hill, temperatures reached 32.1°C, making it the hottest this early in the season since records began in 1859. The city had already experienced its warmest winter on record, with an average winter temperature of 15.3°C. The sudden heat was accompanied by dry conditions and strong northwesterly winds, creating a dangerous combination for bushfires. Authorities responded by declaring an Extreme fire danger rating across Greater Sydney and imposing a Total Fire Ban, meaning open fires and activities capable of creating sparks were prohibited.
Behind this unusual spring heat is a powerful El Niño event in the Pacific, which is bringing hotter and drier conditions to parts of southern and eastern Australia. The Bureau of Meteorology has warned that the current El Niño could become stronger than any recorded since reliable records began in 1950, although the strength of El Niño does not automatically determine the severity of its impacts in Australia. Climate change is adding another layer to the risk, with a warmer atmosphere increasing the likelihood of extreme heat and dangerous fire weather. For Sydney, the early-season heat is therefore more than just an uncomfortable spell—it is another warning of how quickly hotter temperatures, dry vegetation and strong winds can combine to turn ordinary spring weather into a serious bushfire threat. More