The UK has a temperate climate, with winter temperatures moderated by the warm Gulf Stream. Although there are distinct seasons, the weather is somewhat unpredictable at all times of year. The skies are frequently overcast.

Mean annual temperatures range from 6 degrees C (43 degrees F) in the far north of Scotland to 11 degrees C (52 degrees F) in the south-west of England. Winter temperatures very rarely fall below -10 degrees C (14 degrees F), and in summer temperatures do not usually exceed 32 degrees C (90 degrees F).

Rain falls throughout the year and there is an average annual rainfall of more than 1,000 mm (40 in). Snow sometimes falls in winter, especially in Scotland, northern England and the Welsh mountains.