The temperatures in London in May are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in London during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that London can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in London in May 2025.
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.