January in Sanlucar de Barrameda is the rainiest and the coldest month of the year. In January, the weather in Sanlucar de Barrameda is typically warm. Average daily high temperature in January is about 15 degrees above zero. On average, Sanlucar de Barrameda has 13 sunny, 8 rainy, 7 partly cloudy, and 3 cloudy days in January. The rains are usually moderate. January as well as December is considered the most uncomfortable time to visit Sanlucar de Barrameda.