London weather in May (Greater London, United Kingdom)

The average maximum daytime temperature in London in May lies at 17.4°C (63.32°F). The average minimum temperature goes down to around 7.2°C (44.96°F) (often the minimum temperature is noted at night).

Rainfall during May is moderate with an average of 53mm (2.1 inches). There are generally around 10 rainy days. The sun also shows itself regularly this month with 209 hours of sunshine during the entire month.


London, monthly averages in May

Show in Celsius
Min Temperature 44 °F  
Max Temperature 63 °F  
Chance of Rain 34%  
Precipitation 2 in  
Rainy days 10 days  
Humidity 66% *  
Sunshine 209 hrs *  
Percentage Sunshine 41% *  

Where to stay in London

Where to go in the United Kingdom in May

Find out more about the weather in the United Kingdom in May and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in May? Bring a rain jacket in case it rains during your stay. Plan on layering your clothes, as some days or part of the day it can be nice and warm, while other times it can get quite chilly. At night it tends to cool off so best to pack some warm nightwear as well.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in May.

Outdoor sports

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in London.

Our site offers climate and forecast data for every country in the world. Are you going to the United Kingdom? On this website you can find historical weather averages for many cities in the United Kingdom. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.