In the context of climate change, the impacts of extreme weather events are increasingly recognised as a significant threat to mental health in the UK. As clinicians and researchers with an interest in mental health, we have a collective responsibility to help understand and mitigate these impacts. To achieve this, however, it is vital to have an appreciation of the relevant policy and regulatory frameworks. In this feature article, a collaboration amongst mental health and policy experts, we provide an overview of the integration of mental health within current climate policies and regulations in the UK, including gaps and opportunities. We argue that current policy and regulatory frameworks are lacking in coverage, ambition, detail and implementation, as increases in weather extremes and their negative impacts on mental health outpace action. For example, across current national and local climate policies, there is almost no reference to the impacts of extreme weather events on mental health. Whilst alarming, this provides scope for future research to fill evidence gaps and inform policy and regulatory change. We call for mental health and policy experts to work together to improve our understanding of underlying mechanisms and develop practical interventions, helping to bring mental health within climate policy and regulatory frameworks.