BACKGROUND: Australia has a hot climate with maximum summer temperatures in its major cities frequently exceeding 35 degrees C. Although 'heat waves' are an annual occurrence, the associated heat-related deaths among vulnerable groups, such as older people, suggest that Australians could be better prepared to deal with extreme heat. OBJECTIVE: To understand ways in which a vulnerable sub-population adapt their personal behaviour to cope with heat within the context of Australians' relationship with heat. DESIGN: We draw upon scientific, historical and literary sources and on a set of repeat interviews in the suburbs of Western Sydney with eight older participants and two focus group discussions. We discuss ways in which this group of older people modifies their behaviour to adapt to heat, and reflect on manifestations of Australians' ambivalence towards heat. RESULTS: Participants reported a number of methods for coping with extreme heat, including a number of methods of personal cooling, changing patterns of daily activity and altering dietary habits. The use of air-conditioning was near universal, but with recognition that increasing energy costs may become more prohibitive over time. CONCLUSIONS: While a number of methods are employed by older people to stay cool, these may become limited in the future. Australians' attitudes may contribute to the ill-health and mortality associated with excessive heat.