Spring Weather: When Conditions Change Quickly

Spring often creates a sense of improvement on the road. Temperatures rise, daylight increases, and conditions appear more favourable. Yet May remains a transitional period, and with that comes unpredictability.

Weather can change quickly, and those changes affect driving conditions more than many realise.

Sudden Rain on Dry Roads

After extended dry periods, roads accumulate oil, dust, and debris. When rain begins, this layer mixes with water to form a slippery surface.

During the first moments of rainfall, grip can be significantly reduced — often more so than during prolonged wet weather.

Drivers may not immediately recognise this change, especially if visibility remains good.

Visibility Can Shift Rapidly

Spring showers can arrive quickly and reduce visibility within seconds. Light rain, heavier downpours, and spray from other vehicles all affect how clearly drivers can see ahead.

Changes in light conditions — from bright sun to overcast skies — can also alter contrast and depth perception.

Temperature and Surface Behaviour

Warmer air temperatures do not guarantee consistent road conditions. Surfaces may remain damp in shaded areas or become polished and slippery in others.

Variability is the defining feature of spring driving.

Adapting to Changing Conditions

Safe driving in changing weather requires flexibility:

• reducing speed when rain begins,
• increasing following distance,
• using smooth steering and braking inputs,
• remaining alert to surface changes.

Adapting early is more effective than reacting late.

The Risk of Overconfidence

Improving weather often leads to increased confidence. Drivers may feel more relaxed and assume conditions are safer, even when surfaces and visibility are deteriorating.

This mismatch between perception and reality increases risk.

Preparation Matters

Before travelling, checking forecasts from AEMET can provide valuable insight into expected conditions.

Being prepared for change is a key part of safe driving.

Expect the Unexpected

Spring weather does not follow a steady pattern. Conditions can change within minutes, and roads can behave differently from one section to the next.

Recognising that unpredictability — and adjusting accordingly — helps ensure that changing weather does not lead to unexpected danger.