If you’ve ever started your car on a cold winter morning only to find your windscreen completely fogged up, you’re not alone. In South African winters, especially in July, misty mornings and damp conditions are common across many regions. Poor visibility isn’t just frustrating, it’s a serious safety risk.
Luckily, there are practical ways to prevent and clear up fogged windscreens, helping you drive with confidence, no matter the weather.
Why Do Windows Fog Up in Winter?
Fog forms when warm, moist air inside your car meets the cold surface of the windscreen. This causes condensation, especially when we breathe inside a sealed car or use the heater incorrectly. If left unchecked, this can significantly reduce visibility and increase the risk of accidents.
The team at Arrive Alive highlights how reduced visibility from fogged windscreens is a major contributor to winter road incidents, especially during peak traffic hours when delays lead to rushed or distracted driving.
Quick Steps to Clear a Foggy Windscreen
If you’re already on the road or about to leave and the fog has set in, here’s what to do:
✅ 1. Use the Defogger Setting
Most modern vehicles have a specific defogging mode. This balances temperature and airflow to clear the windscreen efficiently.
✅ 2. Turn On the Air Conditioner
Even in winter! The air conditioner removes moisture from the air, which helps clear the condensation faster.
✅ 3. Open a Window Slightly
Allowing cold, dry outside air in helps equalise the temperature inside the car, reducing fog build-up on the glass.
✅ 4. Wipe the Glass as a Last Resort
If you must wipe the inside of your windscreen, use a clean microfibre cloth to avoid streaks and residue.
Allstate’s winter driving guide explains how using a combination of heat and A/C is often the most effective way to clear interior fog quickly and safely.
Preventing Future Fogging
Preventative steps can make your morning commute a lot smoother:
- Keep windows clean – dirt and grime attract moisture and make fog worse.
- Use anti-fog products – sprays or wipes designed to reduce interior condensation are widely available and very effective.
- Don’t leave wet items inside – umbrellas, wet clothes, or even damp floor mats add unnecessary moisture to the air.
- Replace your cabin air filter – a clogged filter can reduce airflow and increase fogging.
Regular cleaning and good ventilation go a long way in keeping visibility clear all winter long.
Bonus Tip: Watch for External Fog Too
Misty mornings can also fog up the outside of your windscreen. To deal with that:
- Use your windscreen wipers and washer fluid.
- Make sure your washer jets are working properly.
- Warm up your car gently — avoid pouring hot water onto a cold windscreen, as it can crack the glass.
Stay Clear and Drive Safe This Winter
Fogged windows may seem like a small issue, but they can lead to big problems if ignored. With a few simple habits and the right tools, you can enjoy clear vision and safer driving all winter long.
For products like anti-fog sprays, replacement air filters, or expert advice, pop into your nearest Naskar store — we’ll help you prepare for whatever the weather throws your way.
