Rainy Season: Worn Wiper Blades Fog The Glass And Raise Crash Risk

In heavy rain, a cloudy windshield is often not just water—hardened, cracked, or streaking wiper rubber can suddenly blur a driver’s view on a crowded road.

In Indonesia’s rainy season, many drivers only notice failing wipers once the downpour hits a toll road or a crowded junction. A clear view suddenly fills with streaks, a thin haze, or unswept patches. That is not a comfort issue—it cuts reaction time when a motorcycle cuts in or when the car ahead brakes hard.

Wiper rubber works by pressing evenly on the glass while sweeping water away. Heat, dust, and UV harden the rubber, crack the edge, or weaken the arm spring so pressure goes uneven. The result: skipping sweeps, squeaks, or a water film that stays right in the line of sight. Night rain makes it worse because oncoming lights bounce off the uneven film and glare lasts longer.

Before peak rains, test the wipers somewhere safe: spray washer fluid, run low then high speed, and check whether the whole windshield clears in two or three sweeps. Vertical streaks, dry corners, or glass that stays cloudy mean it is time for new rubber. Many drivers wait until the blade is fully bald; it is safer to replace every six to twelve months, or sooner if the car often sits in harsh sun and dust.