Barcelos, Portugal experiences mild winters with temperatures ranging from -2°C to 15°C in January and December, averaging around 9-12°C. As spring approaches, temperatures gradually rise, reaching averages of 13-15°C in March and April, with occasional warmer days up to 29°C. Summer months bring warm weather, with July being the hottest month, averaging 19°C, but still experiencing some cooler nights. Autumn is similar to spring, with mild temperatures, although slightly cooler, ranging from 8-22°C.