Weather in London
The weather in London is not usually very hot or very cold but it can change quickly and unpredictably. The maximum temperature in summer is usually about 30ºC and in winter the lowest is probably around 0º. It does not snow very much in London. We often have mild winters and cool summers so you should be prepared for anything. An umbrella is always useful although it doesn't rain as much as people think.
Most of our students tend not to dress formally, but wear comfortable casual clothes. When you are sightseeing or shopping in London you will want to be comfortable and warm. Most pubs, restaurants and theatres do not have an official dress code and you will be welcome in your casual clothes.
Make sure you bring some warm clothes as in Britain it may be quite cold in the evenings even during the summer period.