February 17 2026
Commonly Asked Questions | How hot weather affects mental health
As the summer heat lingers, we’re exploring the impact hot weather can have on our mental health.
To unpack this important topic, we spoke with Mental Health Nurse Harry Gilbert from Hyson Green Mental Health at Calvary Bruce Private Hospital, who shared his insights, experience, and practical advice.
Q. Does hot weather really affect mental health, or is it just discomfort?
Hot weather can absolutely affect mental health; it’s not just about feeling uncomfortable. Prolonged heat can disrupt sleep, increase fatigue, and place extra stress on the body. When we’re physically stressed, our emotional resilience can drop, making people more irritable, anxious, low in mood, or overwhelmed. For people already living with mental health conditions, heat can sometimes intensify symptoms or make coping strategies harder to maintain.
Q. What mental health changes do you commonly see during heatwaves?
During very hot periods, people often report:
- increased irritability or agitation
- difficulty concentrating
- feeling restless or “on edge”
- poor sleep, which then affects mood and motivation
- heightened anxiety or stress
We also see that routines like exercise, socialising, or attending appointments can be disrupted by heat, which can contribute to feelings of isolation or low mood.
Q. Are some people more affected by the heat than others?
Yes. People who may be more vulnerable include:
- older adults
- people with existing mental health conditions
- those taking certain medications that affect hydration or temperature regulation
- people experiencing social isolation or limited access to cooling
That said, anyone can feel the mental effects of extreme heat, especially during prolonged hot spells.
Q. We often hear about Seasonal Affective Disorder (SAD). Does that still matter in summer?
SAD is most commonly associated with winter and reduced sunlight, but it’s important to remember that seasonal changes affect people differently. Some individuals experience a summer pattern of low mood, anxiety, or agitation. While winter SAD is typically more spoken about, summer-related mental health challenges are just as valid and deserve support and understanding.
Q. What are some simple ways people can protect their mental health during hot weather?
Small, practical steps can make a big difference:
- prioritise sleep - keep bedrooms cool, use fans, and aim for consistent sleep routines
- stay hydrated - dehydration can worsen fatigue, headaches, and mood changes
- adjust expectations - it’s okay to slow down and do less during extreme heat
- stay connected - check in with friends, family, or neighbours
- plan cooler activities - exercise or go outside early in the morning or later in the evening
- create a cool-down routine - cool showers, shaded spaces, or quiet indoor activities can help regulate both body and mind
Q. When should someone consider reaching out for extra support?
If someone notices persistent changes in mood, sleep, anxiety levels, or coping, especially if it’s affecting daily life, it’s important to seek support. That might be through a GP, a mental health professional, or trusted services in the community. Reaching out early can prevent things from escalating, and it’s a sign of strength, not weakness.
