Britain has a generally mild, temperate climate. The weather, however, tends to be very changeable (though not necessarily unpredictable) as a result of the constant influence of different air masses. The prevailing winds are south-westerly, which bring warm air in from across the Atlantic. There are few extremes in temperature, which rarely goes above 32 °C or below 10 °C. In summer, southern Britain is warmer than northern Britain because of its latitude, but in winter the North Atlantic Drift a warm sea current keeps the west milder than the east. Consequently Wales and the south-west peninsula have the most moderate climate and eastern England the most extreme. These differences are not great, however, and local variations arising from factors such as altitude and pollution are often greater. Annual rainfall is fairly evenly distributed, but ranges from more than 1,600 mm in the mountainous areas of the west and north to less than 800 mm over central and eastern parts. This is because depressions from the Atlantic bring frontal rainfall first to the west and because western Britain is higher and so gets more relief rain. Tìm giúp em 10 lỗi sai và sửa lại hộ em vs. Em cảm ơn ạ