Public buildings in Spain will be cooled to no less than 27 degrees Celsius (81 Fahrenheit) in the summer, and heated to no more than 19 degrees Celsius (66 Fahrenheit) in the winter as part of a plan to save energy, the government said this week.

Spain maintains strict energy-saving regulations that impact heating and cooling in public and commercial buildings. Under the law (originally passed in 2022 and still enforced in 2026), thermostats in public places—including shopping malls, cinemas, train stations, and hotels—cannot be set higher than 19°C (66°F) during the winter months. In the summer, air conditioning cannot be set lower than 27°C (81°F). These measures were designed to reduce national energy consumption and dependency on foreign gas. While these laws do not legally apply to private homes, the government strongly encourages citizens to follow the "19/27" rule to support sustainability goals. Travelers should pack layers when visiting Spain in the winter, as indoor public spaces may feel cooler than they are accustomed to in other countries.