A rain irrigation assembly includes a collector that is insertable into a downspout of a rain gutter to collect rain running in the downspout. A plurality of hoses is each fluidly coupled to the collector to receive the rain from the collector. A plurality of watering units is provided and each of the watering units can be positioned at a selected area of a yard. Each of the watering units is fluidly coupled to a respective one of the hoses to receive the rain from the respective hose. Each of the watering units has a foraminous surface to pass the rain outwardly therefrom for irrigating the selected area of the yard.