July and August are Brussels' hottest months, while December and January are the coldest. Temperatures range from approximately 40 degrees F to around 80 degrees F.
Per month, Brussels receives 6 to 10 inches of rain. December is the rainiest season on average. The driest months are February to May. Rain is common all year.
Light snow, sleet and rain are common during the winter. Six days of snow is the average for January. Sunshine during this time is thin, with reduced daylight hours. But winters in Brussels are considered mild.
Spring marks the beginning of tourist season in Brussels. April's average temperature is 48 degrees F, with rain most days and fog common.
Warm summers allow tourists to enjoy all Brussels has to offer. The afternoons are more humid than the mornings, with an average of approximately 80 percent humidity in the afternoons and 60 percent in the mornings.
Autumn in Brussels continues to be pleasant and is a popular time to vacation in the area. The average mean temperature is 52 degrees F, with some fog and rainfall common.
