Summer stress... it's a thing.
The effects of heat stress on the brain are well documented, and studies show that anxiety and depressive symptoms can worsen in the presence of extreme heat.
People who experience high temperatures tend to be more irritable and nervous, which can exacerbate anxiety. Although the precise causes of these alterations are unknown, certain people may be more susceptible to them, particularly in hot conditions like the southern regions. The release of more stress hormones like cortisol, which can aggravate anxiety, may be influenced by hot temperatures.