When does bed wetting typically stop?

Late teen age: Almost all enuretic children (primary enuretics-who never stayed dry for a period) achieve urinary continence when they reach late teen age. Approximately 1% of adults remain incontinent.

7 or 8 years: The first peak for children to stop bed wetting is age 3 - 4 years. Most pediatricians and pediatric urologists don't consider bedwellinf abnormal under 7 years. 85% of children are dry at night by age-5-years. At age 5 years you can start restricting fluids after supper +/or toileting the child when parents retire. Either or both these simple measures can make a difference between wet and dry.

See below: Although the definition of persistent bedwetting is somewhat unclear (are 2 events in a month considered a cure or a failure?), here are the general statistics that have remained relatively unchanged for decades. ~15% of 5 y/os ~5% of 10 y/os ~1% of 18 y/os.