Shade Beats Water: Barcelona Schools Cool Down Lesson

Eleven Barcelona primary schools underwent a significant transformation in the summer of 2020, replacing asphalt with trees, fountains, and canopies. A study conducted five years later in 2025 revealed that shade structures, such as awnings and pergolas, were the most effective element in cooling children.

The Climate Shelters in Schools programme, largely funded by the European Commission's Urban Innovative Actions initiative, involved a €5 million investment. This funded the removal of asphalt, planting of seventy-four trees, installation of twenty-six water points, and construction of over two thousand square metres of shaded space.

Research published in the International Journal of Public Health in February 2025 noted that transformed schoolyards became popular gathering spots during holidays. Families and teenagers frequented these spaces, with shaded areas being the most utilized, aligning with thermal comfort data.

Earlier assessments had already indicated that shaded corners were perceived as more comfortable by pupils and teachers. Newly planted trees had not yet matured enough to provide substantial shade, making built shade structures more immediately impactful than living greenery.

While water features were utilized for cooling, their effectiveness was limited by evaporation and water availability. Trees also require years to mature and provide significant shade. Barcelona City Council has integrated these lessons into its broader climate shelter network, aiming for universal access by 2030.