For the warmest temperatures time your visit for December to March, but like Perth you’re likely to enjoy some lovely fine days in the Spring and Autumn too.
The weather in the Flinders Ranges is quite distinct from the coastal regions of South Australia, with this area characterised by a more temperate climate that becomes arid the further north you travel. The temperatures in the Flinders Ranges in summer are hot, with hiking likely to be unpleasant due to the heat in summer months. We recommend timing your visit to the Flinders for the milder months of April to October. There is little rain to worry about here even in winter.
Average temperatures and rainfall for the Fleurieu Peninsula and Flinders Ranges are below for your reference.