Belgium has a cool and temperate climate with strong maritime influences. The lowland areas are characterized by changing winds, summer thunderstorms with drizzle and an overcast sky. The northwest area is characterized by a mild climate with fog.
The interior experiences more extreme summers while winters in the upland regions are colder and have greater frost and rain. Average annual precipitation varies from 510 to 760 mm (20 to 30 inches) to 1,200 mm (47 inches) in the hills of the south.
Average temperature ranges in Brussels are from -1 to 4 degrees
Celsius (30 to 39 degrees Fahrenheit) in January to 12 to 23
degrees Celsius (54 to 73 degrees Fahrenheit) in July.