London Weather In December 2025. Like a lot of europe during the winter, london's weather is typically very damp and cold. If you're going to london in december, this guide has all you need to know.

If you’re planning to visit london in the near future, we highly recommend that you review the 14 day weather forecast for london before you arrive. Get the monthly weather forecast for city of london, london, united kingdom, including daily high/low, historical averages, to help you plan ahead.