The evaporative condenser cooling system is an air cooling system combining an evaporative condenser and a sensible heat exchanger. The evaporative condenser cools environmental air in a conventional manner, and includes a condenser immersed in water contained within a water reservoir. The water in the reservoir is also used to humidify another portion of environmental air, which is, in turn, cooled by evaporative cooling, and this cooled air is used in a heat exchange process with the sensible heat exchanger. The sensible heat exchanger is in communication with the water reservoir to provide additional cooling to the water therein, which is used to provide a further cooled environment for the condenser, enhancing heat exchange between the condenser and the water in which it is immersed.