You should water your lawn deeply once a week.
Always try and water your lawn in the summer or when we didn’t get much rain for a long period of time.
Grass is made up of 85% water, so every time you cut the grass, you are removing water.
Water when the lawn tells you to. The signs to look for when the lawn is starting to gasp a little are; a change in colour of the lawn as it often takes on a bluey tinge as moisture levels become low and the lawn then turns brown. Water deeply each time you water. You must avoid having wet grass at night as this promotes disease, therefore water before the heat of the day so that the lawn has time to dry before nightfall.