Eastern Australia has experienced unusually warm conditions, with Brisbane reaching 34.4C on September 6, its hottest September temperature since 2019. The Bureau of Meteorology said stronger westerly winds could push hotter inland air toward the Queensland capital, potentially keeping afternoon temperatures unusually high.

The heat has also increased bushfire risks across Queensland, prompting authorities to impose fire bans in Ipswich and the Lockyer Valley. Firefighters warned residents in Plainland, west of Ipswich, to prepare to leave as a fast-moving bushfire threatened the area. In northern New South Wales, an emergency warning was also issued for a large grass fire near Tabulam before the alert was later downgraded.

Unusually warm conditions also affected Queensland's coastal areas, with temperatures from Gladstone to the Gold Coast coming within a few degrees of the state record for the beginning of spring. Queensland had already experienced its third-warmest winter on record, with temperatures averaging 1.8C above the long-term average, extending the unusual warmth into spring.

The same weather pattern affected New South Wales, where Sydney reached 33C on September 5. Maximum temperatures during the first days of the month were close to the city's midsummer average of 26.4C, making it one of the warmest starts to spring since records began. The Bureau of Meteorology warned that northeastern New South Wales and southeastern Queensland could continue to see temperatures in the low to mid-30s, while strong winds could further increase fire risks across southeastern Australia.