There is an observable association between high temperatures and mental health decrements , with an additional possible influence of increased precipitation . Heat-associated mental health outcomes include suicide ; psychiatric hospital admissions and emergency room visits for mental disorders ; experiences of anxiety, depression and acute stress ; and self-reported mental health . In Canada, Wang et al.  found an association between mean heat exposure of 28℃ and greater hospital admissions within 0 to 4 days for mood and behavioural disorders . A US study found mental health problems increased by 0.5% when average temperatures exceed 30°C, compared to averages between 25°℃ and 30°C; a 1ºC warming over five years was associated with a 2% increase in mental health problems . Another study found a 1ºC rise in monthly average temperatures over several decades was associated with a 2.1% rise in suicide rates in Mexico and a 0.7% rise in suicide rates in the USA . A systematic review of published research using a variety of methodologies from 19 countries  found an increased risk of suicide associated with a 1℃ rise in ambient temperature.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report