The Grand Duchy of Luxembourg is a small country in western Europe. Because of its proximity to the North Sea and the Atlantic Ocean beyond, Luxembourg has a temperate maritime climate with continental characteristics. Although Luxembourg is not very big in terms of surface area, there are some differences in the average weather. The north of the country, with an average annual precipitation of up to about 1,200 millimetres, is wetter than the south, where the amount of precipitation is often limited to about 800 to 900 millimetres per calendar year. This is because Atlantic disturbances are better able to reach the north of Luxembourg.