Stay Cool Tips for Heatwave Driving

By Ashley Morgan 26/06/2026 3 min read 13 views

The UK is experiencing a heatwave with temperatures reaching record highs in some regions. While this weather boosts ice cream sales, it poses challenges for drivers. Staying cool in a car during extreme heat is key for safety and vehicle reliability. Here’s how to manage the situation effectively.

Drivers should prioritize personal comfort first. Reflective sun shades on the windshield can significantly reduce interior temperatures. This is especially helpful for vehicles with leather seats, where direct sunlight can cause discomfort. Rule 237 of the Highway Code emphasizes the need for ventilation to prevent drowsiness, a critical factor during long drives.

At lower speeds, opening a window slightly allows fresh air to circulate without overwhelming the air conditioning. However, at higher speeds, keeping windows closed and using air conditioning reduces drag and fuel consumption. Drivers should stay hydrated, avoiding alcohol, and ensure all passengers have access to water, even when using air conditioning.

Electric vehicle owners can benefit from preconditioning, a process that cools the cabin while the car is plugged in. This uses grid power instead of battery energy, preserving range and starting the journey with a cooler interior. Many manufacturers offer smartphone apps to control temperature remotely, adding convenience.

Wearing sunglasses is essential to reduce glare, particularly during early mornings or late evenings. While sun visors help, they can’t fully counteract reflections from windshields or shopfronts. Choosing sunglasses that fit well can also contribute to a sense of comfort, though this is more psychological than functional.

Maintaining the vehicle is key to avoiding breakdowns. Regular servicing, checking fluid levels, and monitoring temperature gauges are necessary. If the car overheats, pull over safely and let it cool before opening the hood. Drivers should also be aware of public transport disruptions caused by heat, affecting buses and trains.

Keeping a water container in the car is advisable for emergencies. If the temperature gauge nears the red zone, avoid immediate water top-ups—wait until the system cools to prevent injury. In heavy traffic, turning on the heater can help dissipate heat from the engine bay, though directing vents toward windows is recommended.

After arriving at a destination, never leave pets in the car. Animals can suffer severe heatstroke, prompting emergency services to break windows if necessary. Some vehicles allow remote window opening via the key fob, useful in high temperatures.

Drivers should also be cautious of sudden rain showers, which can make roads slippery after dry periods. This is especially true in the UK, where summer storms are common. Adjusting driving habits to account for these conditions can improve safety.

Planning trips during cooler hours, such as early mornings or evenings, reduces both heat exposure and traffic congestion. For those considering road trips, ensuring the car is prepared for heat and checking weather forecasts can make the journey more enjoyable.

While the focus is on staying cool, drivers should also consider the legal implications of medications. For example, hay fever tablets may affect driving ability, though this is a separate issue. Overall, preparation and awareness are the best defenses against the challenges of driving in extreme heat.