Belgium weather usually has a mild, maritime mainly affected by brisk recurrent air masses from the Atlantic, which consequently create frequent alterations in the weather.  Along the coast, the weather tends to be milder and more humid, and it sometimes can be hot as well.  The coastal region is the driest area of the country.  Belgium weather during winter is damp, humid, cool and usually foggy, whereas the summers are relatively mild.

The average temperature is 12 C throughout the year, with the highest average temperature reaching up to 23 C in July and the lowest average temperature being 0 C in January and February.  The rainfall is frequent and heavy in Belgium.  The precipitation is on average 785mm per annum, with 135 days with more than 0.1 mm rainfall.  July is the time when Belgium receives most of its rainfall, and March is usually the driest month of the year.  The highest rainfall occurs in the Ardennes region, whereas the Flanders region has the highest temperatures of the country throughout the year.

The weather in Belgium is quite humid, with the average humidity being 84% throughout the year.  The average sunlight hours vary between 1.3 hours per day in December and 7.2 hours in May, with a total average of 1585 hours of sunlight per annum.

As mentioned above, the weather in Belgium is highly influenced by the sea along the coastal region, however, the maritime conditions do not affect inland as much.  The climate is more continental and therefore the weather alterations are not as frequent.  It is obviously colder in inland, and frost occurs on an average of 120 days per annum.  The average snowfall period is 30 to 35 days per year, and during January, Belgium weather experiences the lowest temperatures of the year.