You could use hot glue or double-sided tape to attach the string lights.
How to hang outside lights on stucco. Hold them against the wall for 10 seconds so the glue dries and they stick. This will work regardless of whether you have stucco vinyl brick or wood siding. Hold the string lights against the wall for about 20 to 30 seconds allowing the hot glue to harden.
Pull the trigger directing a glob of glue onto the cord and wall. Command strips may not stick to stucco it may be too rough. However hanging outdoor ornaments on your stucco can get tricky.
Load a glue stick into the glue gun. Load a glue stick into the glue gun. Hanging lightweight items from stucco walls requires only a simple plastic wall anchor thats tapped into a hole drilled through the stucco and wall sheathing.
Add a small bead of glue onto the back of the lights and stick them individually to the wall. Selecting an excellent hanging outdoor lights on stucco is important for making good feeling that may makes you calm down because regular activity and job. How do you hang string lights on.
Plug the hot glue gun into an extension cord. Arrange the lights along the line of clips placing the cord in each. Drilling holes to install heavy lighting destroys the weather proof house wrap and other protective layers of stucco that keep your homes foundation from being damaged by moisture.
Instead of drilling directly into the outdoor wall attach suction cups equipped with hooks to the four corners of each window. Apply a bead of exterior silicone caulk along the gap between the fixture and the stucco wall. Use outdoor mounting tape to hang light frames and objects.

