Feeling the Heat: How Hot Weather Can Impact Mental Health and Wellbeing And tips to Keep Cool

As temperatures rise, many of us look forward to longer days, sunshine, and spending more time outdoors. However, while warm weather can bring benefits, excessive heat can also have a significant impact on our mental health and emotional wellbeing.

As a Cognitive Behavioural Therapist (CBT), I often see how physical discomfort can influence our thoughts, emotions and behaviours. Understanding this connection can help us take practical steps to look after ourselves during hot weather.

How Heat Affects Mental Health

Our minds and bodies are closely connected. When we become overheated, dehydrated, or sleep deprived, it can affect how we think, feel, and respond to everyday challenges.

Increased Irritability and Stress

Hot weather can make us feel physically uncomfortable, which can lower our tolerance for frustration. Small inconveniences may feel more overwhelming, and we may find ourselves becoming more impatient, irritable, or short-tempered than usual.

Reduced Concentration and Mental Clarity

High temperatures can affect our ability to focus, process information, and make decisions. Tasks that would normally feel manageable may seem harder, leading to frustration and self-criticism.

Poor Sleep

Many people struggle to sleep during periods of hot weather. Lack of sleep can affect mood, concentration, emotional regulation, and resilience. When we're tired, our minds are often more likely to focus on worries and negative thoughts.

Increased Anxiety

Physical symptoms of overheating—such as sweating, increased heart rate, dizziness, or feeling breathless—can sometimes mimic symptoms associated with anxiety. This can be particularly challenging for people who experience panic attacks or health anxiety.

Low Mood and Emotional Exhaustion

Although sunshine is often linked to improved mood, prolonged heat can leave us feeling drained, lethargic, and less motivated. When energy levels drop, activities that usually support our wellbeing may be neglected.

A CBT Perspective: The Heat-Mood Cycle

CBT recognises that thoughts, feelings, physical sensations, and behaviours all influence one another.

For example:

• Physical sensation: Feeling hot and uncomfortable.

• Thought: "I can't cope with this heat."

• Emotion: Frustration or anxiety.

• Behaviour: Withdrawing from activities or becoming irritable with others.

This cycle can reinforce itself and leave us feeling increasingly overwhelmed.

The good news is that small changes to our thoughts and behaviours can help break the cycle and improve how we cope.

Practical Tips to Keep Cool and Protect Your Wellbeing

1. Stay Hydrated

Even mild dehydration can affect mood, concentration, and energy levels.

• Keep a water bottle nearby.

• Drink regularly throughout the day.

• Limit excessive caffeine and alcohol, which can contribute to dehydration.

2. Adjust Your Expectations

During hot weather, it's normal to have less energy.

Instead of pushing yourself to maintain your usual pace, try asking:

"What is realistic for me today?"

Being flexible with expectations can reduce stress and self-criticism.

3. Challenge Unhelpful Thoughts

Notice if your mind starts generating thoughts such as:

• "I can't stand this."

• "This is unbearable."

• "I'm never going to feel comfortable."

Try replacing them with more balanced alternatives:

• "This is uncomfortable, but I can manage it."

• "The heat will pass."

• "There are things I can do to help myself feel cooler."

  
  

4. Prioritise Sleep

Good sleep supports emotional resilience.

To improve sleep during hot weather:

• Keep curtains closed during the day.

• Avoid vigorous exercise close to bedtime.

  
  

5. Create a Cool Environment

Simple changes can make a big difference:

• Keep blinds or curtains closed during the hottest part of the day.

• Open windows when temperatures are cooler.

• Spend time in air-conditioned public spaces if needed.

  
  

6. Maintain Your Routine

When it's very hot, it's tempting to stop doing activities that support wellbeing.

Try to continue:

• Gentle movement or exercise.

• Social contact.

• Relaxation practices.

• Enjoyable activities.

You may simply need to adapt them by choosing cooler times of day.

7. Practice Self-Compassion

If you're feeling more emotional, tired, or irritable than usual, remember that heat places additional demands on both body and mind.

Treat yourself with the same kindness and understanding you would offer a friend.

When to Seek Support

If you notice a significant decline in your mood, increased anxiety, persistent sleep difficulties, or worsening mental health symptoms during periods of hot weather, it may be helpful to seek professional support.

You do not have to manage these challenges alone.

Final Thoughts

Heat affects more than just our physical comfort—it can influence our thoughts, emotions, and behaviour.

By understanding the connection between physical wellbeing and mental health, we can take proactive steps to stay cool, care for ourselves, and build resilience during warmer months.

This summer, remember: looking after your mental health starts with looking after your body too.