This month’s edition of the Journal of Science and Medicine in Sport has continued consideration of the impact of heat on sport. As summer in the southern hemisphere is now predicted to last a month longer, we lead off with an editorial examining Australian community sport extreme heat policies by Dr Ollie Jay, Associate Professor in Thermoregulatory Physiology, and Director of the Thermal Ergonomics Laboratory, in the Faculty of Health Sciences at the University of Sydney. In the first of the feature articles, Schermann and colleagues describe the value of using heat tolerance testing in reducing the risk of exertional heat illness related injury. In the second feature article, Peeters’ group outline results from the Australian Longitudinal Study on Women’s Health on the relationship between physical activity, medical costs and hospitalisations. In the final feature article, Katica and co-workers report on the impact of upper body precooling during warm up on cycling time trials in the heat.