Introduction: Changes in climatic conditions and improvements in synthetic turf products have resulted in a global increase in the use of synthetic turf surfaces, particularly for the football codes. The introduction of black crumbed rubber infill in third generation (3G) synthetic turf has yielded concerns over possible increases in surface radiant heat and associated heat-related illnesses. With limited evidence on the temperatures experienced on 3G surfaces, it is difficult to determine the actual risk for participants and develop effective prevention strategies. The aim of this study was to establish the temperatures experienced on 3G surfaces compared to natural grass and identify how environmental factors influence surface temperatures.