The amount of sunshine we have depends on latitude and how much cloud there is in the sky. In some of the world's deserts the number of sunshine hours is very high, more than 3,600 hours each year. In the Eastern Sahara desert, the sun is covered by clouds for less than 100 hours a year. In Britain we have from 1,850 hours in Southern England to 1,200 hours in North Scotland. There is usually more sunshine where atmospheric pressure is higher.