The short answer
Most Kissimmee lawns need about 1 to 1.5 inches of water per week, rain included. In the cooler months (roughly November through March), one deep watering a week is usually enough. From April through October, heat and sun push most lawns to two waterings a week — always in the early morning, ideally finishing before 10 a.m., so water soaks in instead of evaporating.
Why mornings beat evenings
Watering at night leaves grass wet for hours, which invites fungus — a real problem in Florida humidity. Early morning watering gives the lawn a drink and lets the sun dry the blades by midday. If your controller is set for 9 p.m. starts, moving it to 4 or 5 a.m. is one of the highest-impact changes you can make.
Watch your local watering days
Osceola County and local utilities set which days you may irrigate, and the rules change between daylight saving and standard time. A smart controller handles this automatically. If you have a basic timer, check your water provider's current schedule and set the controller to match — fines for watering on the wrong day are avoidable.
Sandy soil changes the math
Central Florida soil drains fast. Short daily sprinkles wet the surface and evaporate; the roots stay shallow and the lawn stresses. Longer, less frequent runs push water down where roots grow. If you see runoff on sidewalks after ten minutes, your zones need cycle-and-soak programming — we set this up on every install and tune-up.