Weather in London in march 2021. The weather in London in the month of march comes from statistical datas on … This post is updated for 2020. March means slightly warmer weather, but the peak season crowds have not arrived. Get the monthly weather forecast for London, London, United Kingdom, including daily high/low, historical averages, to help you plan ahead. You plan to visit London in England (United Kingdom) in march : check how are the weather and seasonal norms here. What to Do in London in March. Weather reports from March 2020 in London, England, United Kingdom with highs and lows This post is a summary of the London weather in March, with tips on what to pack and things to do (updated for 2018). London in march: average Weather, Temperature and Climate. That's good because you won't wait in queues very long. Click on the links below to learn more. This post is our list of the best things to do in London in March, including a top 10 list, free, family-friendly as well as nighttime activities. The Six Nations 2020 England vs Wales game is also taking place on Saturday, March 7.