In England, people can have four seasons in one day. So they often talk about the weather. In the morning it is warm like in spring. After an hour black clouds come and then it rains. The weather gets a little cold. In the afternoon it will be sunny. The sun will begin to shine and it'll be like in summer at this time of a day.
In England, people can also have summer in winter, or have winter in summer. So in winter they can swim sometimes, and in summer sometimes they need to wear warm clothes.
When you go to England, you'll see that English people usually take an umbrella or a raincoat with them on a sunny morning. You should not laugh at (嘲笑) them. If you don't take an umbrella or a raincoat, you'll regret (后悔) later in the day.