It is a common assumption that warmer weather can get us ‘hot under the collar’ and indeed, international studies have found aggressive crime rates are correlated to hot weather. However, little has been done within the Australian climate where heatwaves are common and projected to increase. My research draws on statistical, spatial and climate modelling as well as qualitative research methods to better understand the relationship between weather and adverse behaviours such as aggressive crime, domestic violence and suicide. I am also using novel data sources and methods including social media sentiment analysis to understand how weather influences anger and indeed other emotions.