Dew and fog are alternative clean water sources which are recently being considered for increasing the availability of this dwindling resource. The feasibility of harvesting atmospheric water is demonstrated by nature in many examples: back surface of beetles and frogs, cacti spines or spider silk. In all these examples surface properties play a major role in determining the water capture performance. Following these ideas, this work studies the laser-texturing technique as a tool to enhance the water harvesting properties of metallic surfaces. Microgrooves were generated on the surfaces by irradiation with a nanosecond pulsed laser beam. Apart from changes in topography, two other surface properties key in the water harvesting phenomena were modified by the laser treatments: surface wettability, impacting water condensation through nucleation rate and collection dynamics, and surface radiative properties, impacting heat exchange with the surrounding environment. It was seen that the laser textured surfaces have promising capabilities for enhancing atmospheric water harvesting, reducing the time delay for water collection, which is crucial for the pursued application. The promising results obtained led to the construction and evaluation of a real scale outdoors water harvesting system based on laser-textured surfaces, proving the effectiveness, scalability and robustness of the technique.