January in Lucca is the coldest month of the year. In January, the weather in Lucca is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Lucca has 11 partly cloudy, 10 rainy, and 10 sunny days in January. The rains are usually heavy. January as well as February, March, November, and December is considered the most uncomfortable time to visit Lucca.