Winter driving in Jordan is safer than many assume. The first rains after months of dry heat are the real test: accumulated oil and dust on road surfaces make the opening minutes of rainfall the most slippery moment of the entire season. Understanding what happens and what to check puts you ahead. This guide covers the maintenance and driving techniques that make the difference between a routine rainy season and a preventable accident.
The First Rain: Why Roads Are Most Slippery in the Opening Minutes
After a long dry summer, road surfaces accumulate a thin layer of oil and dust. When the first rain falls, this layer lifts and floats on the water, creating a frictionless slick that is more dangerous than the road surface during sustained rainfall. Roads are at their most slippery in the first 10–15 minutes of rain, not during downpour. This is why accident rates spike in the opening hours of the first autumn storms—not because heavier rain is coming, but because the initial light rain mobilizes months of accumulated contamination.
Understanding this pattern helps you anticipate the hazard: stay extra alert and conservative with speed and following distance in the first minutes of rainfall, even if the rain looks light. Slow down, increase your spacing, and treat the first rain as the danger moment—because it is.
Tyre Tread Depth and Water Channelling: Why the Legal Minimum Misses the Point
Tyre tread exists to channel water away from the contact patch—the rubber that grips the road. As tread wears, less water is channelled away, and wet braking performance degrades rapidly. The legal minimum tread depth in Jordan is 1.6 millimetres, and at that depth, tyres are marginally safe in light rain on a straight road and risky on any curve or heavy braking event. Wet braking performance begins to noticeably degrade at around 3 millimetres of remaining tread, which means many tyres still legal on paper are already failing at the job they are supposed to do.
Check your tread depth using the penny test—push a coin into the groove at the edge of the tyre—or with a tread depth gauge. If you are in any doubt, replace the tyres. Winter rain in Jordan demands better than the legal minimum: aim for at least 3 millimetres of tread depth all round for confident wet braking.
Tyre Pressure and Cold: Why Your Pressure Falls with Temperature
Air contracts in cold weather. Every 10 degrees Celsius of temperature drop reduces tyre pressure by approximately 1 bar. If you last checked your tyres in summer at 32°C, and winter arrives at 15°C, your pressure will have dropped noticeably. Under-inflated tyres increase rolling resistance, degrade handling, and wear unevenly.
Check your tyre pressure in winter before the rain arrives—most cars display the correct pressure on a sticker inside the driver's door—and bring them to the manufacturer's specification. This single check prevents a cascade of handling problems and extends tyre life.
Wiper Blades and Heat Damage: Why Summer Perishes What It Does Not Use
Rubber deteriorates in heat faster than it does in use. Wiper blades spend the dry summer sitting in a hot cabin, slowly perishing in the sun and heat, even if they are never used. By autumn, many blades are cracked, stiff, and unable to wipe cleanly. Test your wipers by running them in the dry: if they chatter, skip, or leave streaks, replace them.
Perished blades are a safety issue—you cannot see through a streaky windscreen in rain—and they are cheap to replace. Buy new wipers before winter, not when the first rain arrives and every shop is sold out.
Lights, Visibility, and the Battery
Check all lights: headlights, tail lights, brake lights, hazard lights, and interior lights. Corroded connections or burnt-out bulbs are common and easy to miss. Wet roads and poor visibility demand that other drivers see you clearly. The car battery also takes a hit in cold weather. A battery that was healthy in summer struggles to crank the engine on the first cold morning of winter.
Heat damage from the summer slowly weakens the battery—high temperatures accelerate chemical reactions inside, and cold weather then amplifies those weaknesses. Have your battery tested or replaced if it shows signs of age. A dead battery stranded in rain is a miserable situation.
Coolant, Antifreeze, and Winter Protection
Even though Jordan's winters are mild, a well-maintained coolant system matters. Coolant protects against both overheating in summer and corrosion year-round. Check that your coolant is at the correct level and that it is a proper antifreeze mixture, not plain water.
Antifreeze lowers the freezing point of water and raises its boiling point, protecting the engine in extreme conditions and also providing corrosion inhibitors that protect your engine block and radiator. On the rare cold night when temperature drops, proper antifreeze matters. On every other day, the corrosion protection keeps your cooling system healthy.
Demisting and Visibility: Why Air Conditioning Dehumidifies Your Windscreen Faster
Rain and cold create condensation inside the car—moisture in the air condenses on cold glass. The fastest way to clear a misted windscreen is to run the air conditioning along with the heater: the AC dehumidifies the cabin air, while the heater warms the glass. Running the heater alone will warm the glass but leaves moisture in the air, which re-condenses when you hit a cold patch.
Turning on the AC also clears your windows faster and keeps them clearer. Do not block the air circulation by closing the windows—allow fresh air to flow through as the heater and AC cycle, and you will clear the mist in seconds rather than minutes.
Following Distance and Wet Braking: Increase, Then Increase Again
Wet roads reduce friction dramatically. A safe following distance in the dry might be two seconds. In rain, triple that to six seconds. Your reaction time stays the same, but the distance your car travels before stopping increases significantly—sometimes by 50 percent or more depending on tyre tread and road surface. Conservative spacing gives you time to notice hazards and react without emergency braking, which is when the risk of skidding is highest.
Standing Water and Why You Cannot Judge Its Depth
Never drive through standing water. You cannot judge the depth of a pool of water on the road, and even shallow water can cause catastrophic damage if it enters the engine intake. Water cannot be compressed; if it reaches the engine, it will lock the pistons mid-stroke and destroy the engine instantly—a repair that costs far more than any slight detour.
Treat any standing water as impassable, no matter how shallow it looks. Turn back or take an alternate route. It is the safe choice.