Sydney's weather is unpredictable. One moment you are driving under clear skies, and the next a heavy downpour has reduced visibility to almost nothing and turned the road surface into a slippery film. For experienced drivers, rain demands extra caution. For learners, it can be genuinely frightening. But wet weather driving is not something you can avoid — it is a skill you must develop, because sooner or later you will need to drive in rain, and you need to know exactly what to do.
This guide covers the practical adjustments every driver should make when the roads are wet, from basic speed management through to handling aquaplaning and emergency stops.
Slow Down — Seriously
This is the single most important thing you can do in wet weather, and it is also the one that most drivers ignore. When the road is wet, your tyres have less grip. Braking distances increase significantly — by up to double on a thoroughly wet surface. Cornering grip is reduced. Spray from other vehicles limits your visibility.
The posted speed limit is designed for ideal conditions. In heavy rain, driving at the speed limit may actually be too fast for the conditions. Reduce your speed by at least 10 to 15 km/h below the limit, and further if visibility is seriously impaired. There is no law against driving below the speed limit when conditions demand it, and no one has ever been criticised for arriving safely a few minutes late.
Increase Your Following Distance
In dry conditions, the recommended following distance is at least three seconds behind the vehicle in front. In wet weather, you should extend this to at least four or five seconds. This gives you more time to react if the car ahead brakes suddenly and more distance for your own brakes to bring you to a stop on the slippery surface.
To measure your following distance, pick a fixed point on the road — a sign, a tree, a line marking — and count the seconds between when the car in front passes it and when you reach the same point. If you cannot count to four comfortably, you are too close.
Use Your Headlights
In NSW, you are required by law to turn on your headlights whenever your visibility is reduced, and rain almost always qualifies. Headlights serve two purposes in wet weather: they help you see the road ahead more clearly, and more importantly, they make you visible to other drivers. Even during the day, a car without headlights in heavy rain can be nearly invisible in the spray.
Use your low beams, not high beams. High beams in rain reflect off the water droplets and actually reduce your visibility rather than improving it. If your car has fog lights, use them in very heavy rain, but switch them off once conditions improve as they can dazzle other drivers.
Beware the First Rain After a Dry Spell
The most dangerous time on the road is not during a heavy downpour — it is during the first 15 to 20 minutes of rain after a prolonged dry period. During dry weather, oil, grease, rubber residue and other contaminants build up on the road surface. When rain first arrives, it mixes with these substances to create an extremely slippery film before the water volume is sufficient to wash them away.
If you notice the first drops of rain falling after days or weeks of dry weather, be particularly cautious. Reduce your speed immediately and avoid sudden braking, acceleration or steering inputs until the road has been thoroughly washed by the rain.
Understanding Aquaplaning
Aquaplaning occurs when a layer of water builds up between your tyres and the road surface, causing the tyres to lose contact with the road entirely. When this happens, you temporarily lose all steering and braking control. It is one of the most alarming experiences a driver can have, and it happens more easily than most people realise — sometimes at speeds as low as 60 km/h on standing water.
Signs that you are aquaplaning include a sudden lightness in the steering, a feeling of floating and the engine revving slightly as the drive wheels lose traction. If it happens:
- Do not brake suddenly. This can cause a skid.
- Do not turn the steering wheel sharply. Keep it straight or make only very gentle adjustments.
- Ease off the accelerator gently and allow the car to slow down naturally.
- Wait for the tyres to regain contact with the road surface. You will feel the steering become heavier and more responsive.
The best defence against aquaplaning is prevention: maintain good tyre tread (the legal minimum is 1.5 mm, but 3 mm or more is recommended for wet weather), avoid driving through standing water and keep your speed down.
Braking in the Wet
Modern cars with anti-lock braking systems (ABS) handle wet weather braking much better than older vehicles, but they still cannot defy physics. When you need to brake on a wet road, apply the brake pedal firmly and smoothly rather than stomping on it. ABS will prevent the wheels from locking, but you will still need more distance to stop than on a dry surface.
If your car does not have ABS, use a technique called cadence braking: press the brake firmly until you feel the wheels start to lock, then release slightly, then press again. This mimics what ABS does electronically and helps you maintain steering control during an emergency stop.
Navigating Flooded Roads
In Western Sydney, localised flooding is not unusual during heavy rain, particularly in low-lying areas around the Hawkesbury and Nepean rivers. The rule here is simple and absolute: if you cannot see the road surface through the water, do not drive through it. The depth may be far greater than it appears, the road surface beneath may have been washed away and it takes surprisingly little water to float a car and sweep it off the road.
Even shallow floodwater of 15 centimetres can cause you to lose control, and water just 30 centimetres deep can float most passenger cars. Turn around and find an alternative route. No destination is worth risking your life.
Maintaining Your Car for Wet Weather
Safe wet weather driving starts before you even turn the engine on. Regular maintenance makes a real difference:
- Tyres: Check tread depth monthly. Replace tyres before they reach the legal minimum of 1.5 mm. Properly inflated tyres with good tread are your primary defence against skidding and aquaplaning.
- Windscreen wipers: Replace them at least once a year, or as soon as they start streaking. Worn wipers dramatically reduce visibility in rain.
- Demister: Make sure your car's demister and air conditioning system work properly. Fogged-up windows are a serious hazard in wet weather. Run the air conditioning on the windscreen setting to clear condensation quickly.
- Headlights and tail lights: Check all lights are working. A blown tail light in heavy rain makes you nearly invisible to following traffic.
Practise in Controlled Conditions
The best way to build confidence in wet weather is to practise it deliberately rather than being caught off guard. When light rain is forecast, take the opportunity to do a supervised practice drive on familiar roads. This lets you experience the difference in braking distance, steering feel and visibility in a controlled way, with a supervisor or instructor beside you.
At Best and Less Driving School, we encourage our learners to book at least a few lessons in wet conditions. Our dual-control vehicles and experienced instructors provide a safety net while you build the skills and confidence to handle rain independently. We cover driving techniques across St Marys, Richmond, Westmead and the wider Western Sydney area.
Stay Safe Out There
Wet weather driving is not something to fear — it is something to respect and prepare for. By slowing down, increasing your following distance, maintaining your vehicle and knowing how to respond if things go wrong, you dramatically reduce your risk every time it rains. If you would like hands-on wet weather driving practice with a qualified instructor, get in touch with our team and we will tailor a lesson to build your confidence in all conditions.