Highlights:
- Experts urge motorists to avoid leaving certain items in vehicles during upcoming heatwave
- Temperatures expected to rise above 30°C across large parts of the UK
- Contraceptives and common medications can lose effectiveness in high heat
- Heat can also damage everyday items like sunglasses, suncream and vape devices
Drivers urged to act as UK braces for extended heatwave
Drivers across the UK are being urged to remove a range of everyday items from their cars ahead of a predicted heatwave, with experts warning that the rising temperatures could pose both safety and health risks.
The Met Office has forecast a prolonged spell of hot weather, with temperatures expected to soar into the low 30s on Thursday and Friday. Much of the UK is likely to hit its regional heatwave threshold by the weekend, with this episode potentially affecting a wider area and lasting longer than previous hot spells.
While motorists are often aware of the dangers of leaving items like electronics or water bottles in hot vehicles, motoring specialists have highlighted a less commonly known risk — heat damage to contraception and medication.
Heat can reduce effectiveness of contraceptives
Experts from car dealership group Dick Lovett have warned that items such as birth control pills and condoms should not be left inside cars during hot weather. The interior of a vehicle can act like a greenhouse, with temperatures increasing by up to 50% in just an hour, even when the car is parked in the shade.
Most hormonal contraceptives, including the pill, need to be stored at temperatures between 20-25°C to remain effective. Exposure to extreme heat can degrade the active ingredients, reducing their ability to prevent pregnancy.
Similarly, condoms can be weakened by high temperatures, as heat may damage the latex or cause it to dry out, increasing the risk of breakage during use.
Drivers who store spare contraceptives in their glove box or handbag for emergencies are advised to remove them during heatwaves and follow the storage guidelines provided on the packaging.
Medicines and other everyday items also at risk
Alongside contraceptives, many commonly used medicines are also vulnerable to heat damage. Items such as inhalers, insulin, antibiotics, and other prescription medications can lose potency if stored in high temperatures for too long.
To prevent any potential health complications, drivers should remove all medication from their vehicles during hot weather and keep them in cool, temperature-controlled environments.
Other items to avoid leaving in cars during a heatwave include:
- Suncream (can degrade or leak)
- Vape devices (pose fire risk)
- Sunglasses (can warp or become brittle)
- Fizzy drinks (risk of explosion or container damage)
By taking a few simple precautions, motorists can reduce health and safety risks and avoid damage to personal belongings during the UK’s latest summer heatwave.
