How extreme heat is silently reshaping our mental health this summer

Rising temperatures are taking a growing toll on mental health. Heatwaves now arrive earlier, last longer, and strike with greater intensity each year. For some, the summer months bring not just sunshine but also a form of seasonal depression. Extreme heat above 35°C strains the body and disrupts mental well-being. Sleep suffers the most, with REM sleep—vital for emotional processing—sharply declining in quality. Hospitals see the impact, with emergency room visits for mental health crises rising by nearly 10% during heatwaves.

The heat also weakens impulse control, leaving people more irritable and emotionally reactive. Some develop 'summer depression,' a seasonal affective disorder marked by inner restlessness, fatigue, and loss of interest in daily activities. Societal pressure and the fear of missing out can worsen these feelings.

Yet the slower pace forced by high temperatures can offer unexpected benefits. Embracing this change may provide a therapeutic break from routine. Techniques like radical acceptance are recommended to help manage heat-induced stress and anxiety. The link between extreme heat and mental health is becoming clearer. Reduced sleep, emotional strain, and increased hospital visits highlight the challenge. Recognising these effects and adapting to them can help mitigate the impact on well-being.