As temperatures rise, schools across the UK are being reminded of steps they can take to keep pupils safe in the heat. Children are more vulnerable to heat-related illnesses than adults, so it’s vital schools follow updated guidance from the UK Health Security Agency (UKHSA).
Here’s what school staff, parents, and carers need to know:
Do Schools Close During Hot Weather?
In most cases, schools are expected to remain open. Attendance is crucial for learning, and hot conditions can usually be managed safely through sensible precautions.
School Uniform Adjustments
Schools are encouraged to relax uniform rules in hot weather. Recommended changes include:
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Allowing loose-fitting, light-coloured clothing
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Wearing wide-brimmed hats for sun protection
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Removing blazers and jumpers
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Applying high SPF sunscreen
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Encouraging pupils to stay in shaded areas when outside
Changes to Physical Activities
On very hot days, the Department of Health and Social Care (DHSC) advises against vigorous physical activity. Teachers should adapt lessons to include more sedentary and low-energy tasks during peak heat hours.
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Keeping Classrooms Cool
To help regulate indoor temperatures, schools can:
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Open windows and doors early to create cross-ventilation (or overnight, if safe)
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Close windows when outside air becomes hotter than indoors
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Use blinds or curtains to block direct sunlight without reducing airflow
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Reduce use of electrical equipment and lighting to limit internal heat
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Use fans only if temperatures are below 35°C—they may be ineffective or even dangerous at higher temperatures
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Encourage frequent hydration with access to drinking water
Schools are also encouraged to sign up for UKHSA and Met Office Weather-Health Alerts for real-time updates on extreme conditions.
Recognising Signs of Heat-Related Illness
Teachers and carers should stay alert for symptoms of heat stress, heat exhaustion, or heatstroke.
Heat Stress
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Children may appear irritable or uncomfortable
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Symptoms worsen with physical activity
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Signs of dehydration (e.g. dry nappies in younger children)
Heat Exhaustion
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Tiredness, dizziness, headache, nausea
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Vomiting, pale or clammy skin, heavy sweating
What to do:
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Move the child to a cool area
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Offer cool water
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Use cool packs, damp cloths, or fans to lower body temperature
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Call NHS 111 if symptoms persist or worsen
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Heatstroke (Medical Emergency)
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Confusion, loss of consciousness, seizures
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Red, hot skin (sweaty or dry), very high temperature (40°C+)
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Rapid heartbeat and shallow breathing
What to do:
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Call 999 immediately
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Cool the child using wet sheets or cold packs
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Place them in the recovery position if unconscious
By taking proactive steps and staying vigilant, schools can ensure children stay safe, healthy, and ready to learn—even in the hottest weather.
