Abstract: The present invention is a lighting system for a patio umbrella of the type having a central post supporting a plurality of radiating arms. The system includes a plurality of LED arrays, each array having a plurality of LEDs mounted on a housing having opposite first and second sides. The LEDs of the array are mounted on the first side of the housing and are oriented to project light in one direction. The housing has at least one mounting strap for mounting the housing to one of the radiating arms such that the second side of the housing abuts against the radiating arm and the LEDs are oriented downwardly. Each array has an elongated electrical cable for supplying the LED array with electric power. The system further includes a control module having a battery pack coupled to an LED control circuit. The LED control circuit is configured to drive the LED arrays, the control module having at least one mounting strap dimensioned and configured to mount the control module to the central post.