They do it mainly to help the ball move faster and more smoothly, and to keep the pitch in good condition. A slightly wet surface can also improve traction, reduce dust, and make the grass less likely to tear up during play.

Why it happens

  • Faster ball movement. Water lowers friction, so passes and shots travel quicker on the grass.
  • Better pitch condition. Regular watering helps keep the turf healthy and prevents it from drying out or becoming hard.
  • Player comfort and safety. A softer, damp pitch can reduce dust and may help with traction and impact on landings.
  • Game strategy. Some teams like a wetter pitch because it suits a faster passing style.

When it’s done

Usually the sprinklers run before kickoff so the water has time to soak in a bit, instead of leaving the surface puddled or slippery. In some stadiums it’s also part of routine ground maintenance rather than a last-minute game trick.

Simple version

Think of it like preparing a kitchen counter before cooking: a little moisture makes things slide and move more easily, but too much would cause problems.

Bottom line: they water soccer fields before games to tune the pitch for speed, consistency, and maintenance, not just to make it look green.