A sudden downpour can turn a normal school run, commute or weekend drive into a visibility problem in seconds. Knowing how to prepare car for rain means checking the parts that help you see, stop and stay in control before the first heavy shower hits - not when you are already peering through a smeared windscreen at a set of brake lights.
Australia’s weather can change quickly, especially through storm season. A few simple checks at home can make wet-weather driving safer, reduce unnecessary stress and help you avoid being caught out on the road.
How to prepare car for rain: start with your wipers
Your wiper blades are the first line of defence when rain starts falling. If they leave streaks, skip across the glass, chatter loudly or fail to clear water in one smooth pass, they are no longer doing their job properly.
Worn rubber can harden in heat, split at the edges or lose contact with the curved surface of the windscreen. The result is patchy visibility, particularly at night when streetlights and headlights reflect through water on the glass. A blade may look acceptable when parked in the driveway but perform poorly in a proper downpour.
Run the washers and wipers before rain is forecast. Look for clean, even clearing across the full sweep of the windscreen. If there are persistent lines or unwiped sections in your field of view, replace the blades rather than trying to make them last another season.
It also helps to clean the windscreen and wipe the rubber edge of the blades with a damp cloth. Dirt, tree sap and road film can cause smearing even when the blades are relatively new. Cleaning can improve performance, but it will not repair cracked or misshapen rubber.
For an easy DIY replacement, choose blades matched to your vehicle’s make, model and year. ClearView Wiper provides vehicle-specific front wiper kits designed to remove the usual guesswork around blade length and fitting.
Check your windscreen washer fluid
Wipers cannot clear mud, salt spray, insect marks or oily film without enough washer fluid. Fill the washer reservoir with a proper windscreen washer solution and water, following the directions on the bottle. Plain water can work in a pinch, but a suitable solution is better at lifting grime and can help reduce streaking.
Test the washer jets as well. They should spray evenly onto the screen, not dribble down the bonnet or miss the glass entirely. If a jet is blocked, inspect it for visible debris and use a gentle clean. Avoid forcing a large pin into the nozzle, as this can damage or misalign it.
Do not forget the rear screen if your car has a rear wiper. Clear rearward vision matters when reversing out of a driveway, changing lanes or parking in wet conditions.
Inspect tyre tread and pressure
Tyres are what keep your car connected to wet roads. When tread is low, water cannot clear away effectively from beneath the tyre. That increases the risk of aquaplaning, where the tyres ride on water and steering or braking response is reduced.
Check that your tyre tread is above the legal minimum, but do not treat the minimum as a wet-weather target. More usable tread generally gives water somewhere to go. Look closely for uneven wear, cuts, bulges or objects lodged in the tyre. If one area is worn much faster than the rest, have the alignment, suspension or tyre condition checked.
Check tyre pressures when the tyres are cold and use the pressure listed on your vehicle’s tyre placard, usually found inside the driver’s door opening, fuel flap or owner’s manual. Underinflated tyres can feel less precise and may wear faster. Overinflated tyres can reduce the contact patch. The right pressure is the pressure specified for your car and load, not a number guessed from the tyre sidewall.
If you are heading away with the family, luggage, tools or towing equipment, check whether your placard lists a different pressure for a fully loaded vehicle. Also make sure the spare tyre is inflated and usable. A rainy roadside tyre change is not the time to discover it is flat.
Make sure every light works
Rain reduces contrast and makes vehicles harder to see, even during the day. Your headlights, tail-lights, brake lights and indicators help other drivers judge where you are and what you are about to do.
Turn on the lights and walk around the vehicle, or ask someone to help you check them. Pay attention to dim globes, cracked lenses and condensation trapped inside a lamp. Have someone stand behind the car while you press the brake pedal, or use reflections in a garage door or shop window to check the brake lights.
Use headlights whenever rain reduces visibility. Daytime running lights can improve how visible you are from the front, but some vehicles do not switch on rear tail-lights with daytime running lights. Selecting your normal headlights can make you more visible from both directions.
Check brakes before conditions get slippery
Your brakes should feel firm, predictable and straight. If the pedal feels spongy, the car pulls to one side, you hear grinding or squealing, or a brake warning light is on, arrange an inspection before relying on the car in wet weather.
Light surface rust can form on brake discs after the car has been parked in damp conditions, and it often clears after a few normal brake applications. Persistent noise or poor braking is different. Do not assume rain is the cause and keep driving if the brakes feel wrong.
Wet roads increase stopping distances, even with good tyres and healthy brakes. Leave more room than you normally would between your car and the vehicle ahead. This gives you time to brake progressively rather than stamping on the pedal when traffic suddenly slows.
Look after the battery, demister and air conditioning
A weak battery can become obvious on a cold, wet morning when lights, wipers, demister and air conditioning are all running. If starting has become slow or the battery warning light appears, get it tested. Check battery terminals for corrosion only if you are comfortable doing so, and follow safe handling advice.
Your front and rear demisters are just as useful as your wipers when humidity fogs the glass from inside. Test them before you need them. In many cars, using the air conditioning with the heater helps dry the cabin air and clears fogging faster. Keep the interior of the windscreen clean too, as residue on the inside can make glare and misting worse.
Pack for the conditions, especially on longer drives
For daily suburban trips, preparation may be as simple as good wipers, sound tyres and enough washer fluid. For regional drives or trips during stormy weather, it pays to carry a few practical essentials. Keep a charged mobile, a torch, drinking water, a basic first-aid kit, a high-visibility vest and a dry cloth in the car.
Make sure loose items in the boot are secured. Heavy rain can mean sudden braking, and unsecured cargo can become a distraction or a hazard. If flooding is forecast, check your route before leaving and allow extra time so you are not tempted to rush.
Never drive into floodwater just because another vehicle has gone through it. Depth, current, road damage and debris can be impossible to judge from the driver’s seat. Turn around and choose another route if water covers the road.
Adjust the way you drive in rain
Car preparation is only half the job. In wet conditions, slow down smoothly, leave a larger following gap and avoid abrupt steering, braking or acceleration. These habits help your tyres maintain grip and give other drivers more time to react.
If your car begins to aquaplane, ease off the accelerator gently, keep the steering wheel straight where possible and avoid harsh braking. Wait for the tyres to regain contact with the road before making bigger inputs. Cruise control is best avoided on very wet roads because you need direct control of your speed.
Before the next rain band arrives, give your windscreen, wipers and tyres a proper check in the driveway. Clear vision and steady grip are simple things, but they make every wet-weather trip feel far more manageable.