Driving in Bad Weather — Rain, Snow, Fog Safety Guide + Tyre Tips

Driving in bad weather — the quick answer

Bad weather factors into 20-30% of European crashes, and the single most important response is the simplest: slow down and double your following distance. Rain cuts grip and causes aquaplaning; fog needs dipped headlights (never full-beam); ice demands gentle inputs and long gaps. Each condition has its own technique. The full rain, snow, fog and wind guide is below.

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This guide covers all major weather conditions, the techniques to drive safely in each, and the vehicle and tyre preparation that keeps you safe when the weather turns.

Driving in Rain

Rain is the most common adverse weather condition and the one most often underestimated. Wet roads increase stopping distances by a factor of two to three, and heavy rain reduces visibility dramatically.

Techniques for Rain

1. Reduce speed by 10-30% depending on rain intensity.
2. Increase following distance to at least 4 seconds (double the dry-weather norm).
3. Use dipped headlights — even in daylight. They help other drivers see you.
4. Avoid sudden inputs — smooth steering, gentle braking, gradual acceleration.
5. Avoid standing water — puddles can hide potholes and cause aquaplaning.
6. Use air conditioning or demist to keep windows clear.

Aquaplaning

Aquaplaning occurs when water builds faster between the tyre and road than the tyre can displace it. The tyre lifts off the road surface and rides on a film of water.

Risk factors:

• Speed above 80 km/h
• Tread depth below 3 mm
• Under-inflated tyres
• Wide tyres (wider contact patch, more water to displace)
• Standing water on the road surface

If you aquaplane:

1. Do not brake sharply
2. Do not jerk the steering wheel
3. Ease off the accelerator
4. Hold the steering wheel straight
5. Wait for grip to return

Prevention is better than cure — maintain tyre tread above 3 mm and check pressure regularly. See our tyre pressure guide and tyre tread guide.

Heavy Rain and Flooding

In extreme rainfall:

• If water is flowing across the road and you cannot see the bottom, do not attempt to cross.
• If water reaches the centre of your wheels, stop and reverse if safe.
• After driving through water, test your brakes by tapping them gently.

Driving in Snow and Ice

Snow and ice reduce tyre grip by up to 80% compared to dry conditions. See our detailed snow and ice driving guide for extended coverage.

Key Snow Driving Techniques

1. Fit winter tyres or snow chains — winter tyres offer 30-50% better grip than summer tyres in cold conditions. See our winter tyre guide.
2. Accelerate gently in second gear if possible to reduce wheelspin.
3. Brake early and gently — use engine braking before the brake pedal.
4. Increase following distance to 8-10 seconds.
5. Steer smoothly — sudden inputs cause skids.
6. Use tracks left by previous vehicles — compressed snow offers better grip than fresh snow.

Black Ice

Black ice is invisible and forms on roads when temperatures are near or below freezing, particularly:

• On bridges and overpasses (which cool faster)
• In shaded areas
• Early morning and late evening
• After rain when temperatures drop

If you hit black ice and the car begins to slide, resist the urge to brake. Ease off the accelerator and steer gently in the direction you want to travel.

Driving in Fog

Fog is one of the most dangerous weather conditions because it severely limits visibility while giving a false sense of speed (you feel slower than you are).

Fog Driving Techniques

1. Use dipped headlights and front fog lights. Never use full beam — it reflects off the fog.
2. Use rear fog lights when visibility is below 100 metres. Turn them off when visibility improves.
3. Reduce speed significantly — match your speed to your visibility distance. If you can see 50 metres, drive at a speed that allows you to stop within 50 metres.
4. Increase following distance to at least 6-8 seconds.
5. Use road markings and cat’s eyes as guides to your position.
6. Do not overtake unless absolutely necessary.
7. Open your window slightly — you may hear traffic before you see it.

Visibility and Speed

For additional fog driving advice, see our dedicated fog safety guide.

Driving in Strong Winds

Wind is often underestimated as a driving hazard, particularly crosswinds on exposed roads, bridges, and elevated sections.

Wind Safety Tips

1. Reduce speed — especially on exposed roads, bridges, and when passing gaps in hedgerows or buildings.
2. Keep both hands on the steering wheel with a firm grip.
3. Anticipate gusts — they are strongest when:
   • Exiting tunnels or sheltered areas
   • Crossing bridges or viaducts
   • Overtaking or being overtaken by large vehicles
4. Give extra space to high-sided vehicles — vans, trucks, and motorhomes can be blown into your lane.
5. Watch for debris — branches, bins, and loose objects on the road.
6. Park facing into the wind — prevents doors being ripped open.

Vehicle Vulnerability

If driving a high-sided vehicle in severe winds, consider delaying your journey. Some European bridges and elevated roads close to high-sided vehicles during storms.

Tyre Preparation for All Weather

Your tyres are the only contact between your vehicle and the road. In bad weather, their condition is critical:

Tread Depth

Tyre Pressure

Under-inflation increases the risk of aquaplaning and reduces stability in crosswinds. Over-inflation reduces the contact patch, compromising grip. Check pressure monthly and before any long journey. See our tyre pressure guide.

Seasonal Tyres

For regions with genuine winters (temperatures regularly below 7°C):

• Summer tyres + winter tyres: Best performance in both seasons
• All-season tyres: Adequate compromise in mild climates
• Winter tyres mandatory in many European countries — check our country tyre law pages

When Not to Drive

Sometimes the safest decision is not to drive at all. Consider staying home or delaying your journey when:

• Severe weather warnings are in effect
• Visibility is below 50 metres
• Roads are closed or authorities advise against travel
• You do not have appropriate tyres for the conditions
• You are fatigued (bad weather driving requires more concentration)

Check weather forecasts and road conditions before every winter journey. National road authorities provide real-time conditions — check our country driving guides for links.

Conclusion

Driving safely in bad weather comes down to three fundamentals: reduce speed, increase following distance, and ensure your vehicle — especially your tyres — is properly prepared. Each weather condition has specific techniques, but the underlying principle is always the same: give yourself more time and space to react.

Before your next journey, check the weather forecast, verify your tyre condition using our tyre pressure guide, and review the driving rules for your country on our country driving guides. In severe conditions, the safest option is always to delay your journey.