Firetrucks have rushed to an equestrian centre in Sydney’s south after a grassfire re-emerged for the third time since Sunday morning.

A grassfire burning in Sydney's south has been extinguished. The blaze on the Malabar Headland had reignited after dying down overnight. The small grass fire started at about midnight. READ MORE: More parts of Australia to be hit with unseasonal rainbomb It was extinguished two hours later,

The out-of-control bushfire in Sydney's north has been downgraded to watch and act level.