The truth is that planning exactly what clothes we are going to wear if we travel to London in summer it is a somewhat complicated task, since the city's climate is quite unpredictable. In any case, it is advisable to pack light clothing, comfortable shoes and a raincoat (the latter in case it rains unexpectedly). You have all the information in: «Visiting London in summer«.
You have all the information in: "Visiting London in summer".