Have you considered the current weather and your controller's scheduling? Are you wasting or not using enough water? Can you afford to use more water during the hotter months by compensating for it during the wetter seasons?

Many controllers have a seasonal adjustment feature; allowing you to decrease or increase watering without having to change each individual run time.

Have a look at this article for further information on how to smartly use your controller!

Seasonal Adjustment Function on Controllers explained