The climate in Belgium

Average daytime and nighttime temperatures

All climate diagrams on this page come from the collected data of 9 weather stations.
All data correspond to the average monthly values of the last 20 years.

Back to overview: Belgium

Climate zone: Moderate zone of the northern hemisphere

The climate in Belgium is quite varied, but generally does not offer extreme climate conditions. It is cold and wet with some nice summer months. The warmest and rainiest part of the country is Wallonia. The coldest is Flanders. Due to the warmer temperatures, the best time for traveling is from June to September. Less attractive are the cold months from November to March.
Duration of daylight and sunshine in Belgium
Compare climate with other regions or countries
Hours of sunshine per daySunshine hours per day in Belgium
Rain days per monthRain days per month in Belgium
Precipitation in mm/dayPrecipitation in Belgium
Relative humidity in %Relative humidity in Belgium
Absolute humidity in g/m³Absolute humidity in Belgium

Temperature records of the last 74 years

The hottest temperature measured from 1949 to January 2023 was reported by the Brussels weather station. In July 2019, the record temperature of 39.7 °C was reported here. The hottest summer from July to September was recorded in 2006 with an average temperature of 19.2 °C. This average temperature will normally be measured every four to six hours, thus also including the nights. Normally, this value is 16.9 degrees Celsius. The average maximum daily temperature at that time was 24.1 °C.

The coldest day in these 74 years was reported by the Brussels weather station. Here the temperature dropped to -13.0 °C in February 2012. Brussels lies at an altitude of 101 meters above sea level. The coldest winter (January to March) was in 1963 with an average temperature of -0.1 °C. In Belgium, it is usual to have about 4.5 degrees more at 4.4 °C for this three-month period.

The most precipitation fell in August 1996. With 7.5 mm per day, the Brussels weather station recorded the highest monthly average of the last 74 years.

Data basis and methodology

The data from the individual measuring stations are based on the archives of the German Weather Service, individual values averaged and supplemented by own elements. In order to determine a representative national average, average values were first calculated for each part of the country, which were then summarized at the national level. Thus, if a disproportionate number of weather stations are located in a small area, their number does not affect the national average.
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