January weather forecast in London

January in London is the coldest month of the year. In January, the weather in London is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, London has 11 rainy, 9 cloudy, 8 partly cloudy, and 3 sunny days in January. The rains are usually moderate. January as well as February, March, April, and October is considered the most uncomfortable time to visit London.