Place coffee cans out in the yard several feet away from your sprinkler system. Turn the sprinkler on, and check the cans to find out how long it takes for them to fill up with 1 inch of water. Bermuda grass generally needs 1 inch of water per a week.
Dig a 6- to 8-inch hole in the ground. If the soil is moist, you have adequately draining soil and do not need to adjust your time or amount of water you are giving the grass. Soil that watery means you need to reduce the time that you water your lawn. If the soil is dry, increase the time by a few minutes, and check the soil at 6 to 8 inches deep.
Keep one to two coffee cans in the yard to measure the amount of rainfall your grass receives in a week. Visit the cans each week to see if your lawn has had enough rain or needs to be irrigated.
Set your sprinkler's timer to go off in the morning. Late afternoon or nighttime irrigation can raise the risk of your Bermuda grass contracting a fungal disease.
Increase the amount of time you irrigate if you notice your Bermuda grass wilting during extremely hot temperatures.