In Great Britain it is never too hot or too cold for work or play in the open air. This is because of the sea, which keeps the island warm in winter and makes the air cool in summer.The winds have also very much to do with weather in Great Britain. The winds blow from the south-west two days out of every three. But warm winds that blow from the Atlantic are as wet as they are warm. They also bring plenty of rain to the island. The east and north-east winds are cold and dry.Thanks to the mild climate there are a lot of evergreen plants in Great Britain. And the country is always green. But the lack of sunshine is the reason why the cultivation of grain crops is difficult. Grass grows all the year round.It provides fodder for cattle.The weather changes very often. You can never have the same kind of weather for a long time. In spring sunshine and showers follow each other so often during the day that an umbrella or a raincoat are things you want most in Great Britain.In spring the weather is generally mild but sometimes they get really cold days. The summer is not so hot as on the continent, and warm days in autumn are beautiful.In winter they have all sorts of weather. Sometimes it rains and sometimes it snows, and they also have fog and frost. Still, in Great Britain it is never so cold in winter as on the continent, and they don't get much snow there. The rivers and lakes are seldom covered with ice. As the ice, if there is any, is not thick enough they seldom go skating on the rivers in Great Britain.But the worst thing about the climate in Great Britain is the thick fog they so often have in autumn or winter. In London it is sometimes so thick that cars may run into one another.