Increasing extreme heat will have profound impacts on people, industries and ecosystems in the Whitsundays. CSIRO and Bureau of Meteorology projections estimate that the average number of days over 35 degrees each year could increase fourfold by 2030 and reach over 87 days per year by 2090 without strong climate policies. Hot nights above 25 degrees are projected to rise from an average of 18 per year up to 177 per year by 2090.