Zaventem Weather & Climate: Best Time to Visit

Visitors to Zaventem can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 24°C (75°F) in July, the warmest time of the year, to a chilly 7°C (45°F) during cooler months like January.

At night, you can expect temperatures ranging from 14°C (57°F) in July to around 2°C (36°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Zaventem experiences moderate precipitation patterns, averaging 817 mm (32 in) yearly. Year-round, Zaventem has a balanced climate with minimal variation in precipitation. The difference between the wettest month, August, with 79 mm (3.1 in), and the driest month, April, with 54 mm (2.1 in), is minimal. For more details, please visit our Zaventem Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Zaventem. While July receives considerable daily sunshine with up to 6.8 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.5 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Zaventem.

The city experiences its highest humidity in December, reaching 86%. In April, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed over the year ranges from 3 m/s (6 knots) in April, May, June, July, August, September, October and November to 4 m/s (8 knots) in January, February, March and December. What does this mean?

The mean monthly wind speed over the year (meters per second)