January in Coimbra is the rainiest and the coldest month of the year. In January, the weather in Coimbra is typically warm. Average daily high temperature in January is about 11 degrees above zero. On average, Coimbra has 14 rainy, 11 sunny, 5 partly cloudy, and 1 cloudy day in January. The rains are usually heavy. January as well as February is considered the most uncomfortable time to visit Coimbra.