January is the coldest month in London, UK when the winter season is well underway. The city is cool and wet but milder when compared to many other northern European cities. It's a a good time to visit if you want to avoid crowds and queues at the city's attractions. Throughout the month, the average remains constant at +5-6°C, with little variation. Daily highs are around 8°C over the course of January, rising above 12°C or going under 3°C very rarely. The highest temperature recorded in London in January is 17°C, with the lowest recorded temperature ever being -5°C. It's almost guaranteed that you'll experience some rain on your trip. There are around three hours of sunshine each day in London in January, with wind speed tends to vary from mild to moderate breezes.